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[mpi] all_reduce and MPI_IN_PLACE like feature
by Alain O Miniussi 22 Mar '12

22 Mar '12

Hi, MPI_Allreduce offers the possibility to use the same buffer for the send and recv data: http://www.open-mpi.org/doc/v1.4/man3/MPI_Allreduce.3.php#toc8 It seems that boost's all_reduce does not allow such a feature. First, I would like to know if the previous statement is correct and, if yes, if it was just overlooked or if there was a reason for that? Just in case, I filed a ticket regarding that issue, along with a tentative patch, in https://svn.boost.org/trac/boost/ticket/6704 Regards, Alain

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Convert asio::error_code into boost::system::error_code
by Jens Weller 22 Mar '12

22 Mar '12

Hi, I'm in a usecase, where we use a library, which brings its own asio lib with it: http://www.resiprocate.org/ReTurn_Overview If this is correct, they're using asio 1.2 in its header only version. I've build an API which uses boost::asio to send data over the network. One of our goals is now, to also include stun/turn, so we have to use this library. To enable the errorreporting, I need to convert the asio::error_code coming from reTurn to boost::system::error_code, so that I can call my notify method with it: void notifyError(const boost::system::error_code& ec); any expierence in this? The constructors don't seem to fit, as error_category is in asio a enum, and in boost::system a class f.e. gz Jens Weller -- Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de

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[Property Map] given a function/functor, how to construct readable property map?
by Frank Birbacher 22 Mar '12

22 Mar '12

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi! I have graph structure using custom datatypes. An edge weight can be calculated by calling some function. I want to call the dag shortest path algorithm and pass it a property map that uses the function to compute edge weights on the fly. I consulted the Boost 1.47 documentation for property map. I find identity or std::map adaptors, but did not find any reference to using functions or functors. Do I miss anything? Frank -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: keyserver x-hkp://pool.sks-keyservers.net iEYEARECAAYFAk9o2GwACgkQhAOUmAZhnmpdAwCfc38fjB2cZC/ZYzv7Y8+GXdTr IXgAnjoJh5ZKoxFkNTAK5Ye0DeOkuQY0 =8xTO -----END PGP SIGNATURE-----

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Boost ASIO cancelling jobs from another thread
by Mark Christiaens 21 Mar '12

21 Mar '12

We are developing a client-server application using Boost ASIO for asynchronous socket communication. We were wondering whether it is safe to cancel a read on a socket by closing the socket from another thread (without any additional synchronization)? What would be the preferred way to cancel operations from different threads? Thanks in advance, Mark Christiaens Amplidata

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boost::interprocess managed_unique_ptr cannot be used inside template (VS2008).
by bear330 21 Mar '12

21 Mar '12

Hi, I eagerly want to try boost 1.49, but the compiler error stuck me. managed_unique_ptr cannot be used inside template if I use Visual Studio 2008: There is a very simple example: #include <iostream> #include <boost/interprocess/managed_windows_shared_memory.hpp> #include <boost/interprocess/smart_ptr/unique_ptr.hpp> #include <boost/interprocess/allocators/allocator.hpp> #include <boost/interprocess/containers/list.hpp> #include <boost/interprocess/sync/named_mutex.hpp> #include <boost/interprocess/sync/named_condition.hpp> #include <boost/interprocess/sync/scoped_lock.hpp> struct Request { int a; }; template<typename Segment, typename T> class Channel { public: /// Value pointer in queue. typedef typename boost::interprocess::managed_unique_ptr<T, Segment>::type ValuePtr; }; int main(int argc, char* argv[]) { Channel<boost::interprocess::managed_windows_shared_memory, Request>::ValuePtr v; std::cout << "Test" << std::endl; return 0; } I got this error in Visual Studio 2008: T.cpp C:\Program Files\boost\boost_1_49_0\boost/interprocess/detail/pointer_type.hpp(64) : error C2039: 'remove_reference' : is not a member of 'boost::interprocess::ipcdetail::ipcdetail' C:\Program Files\boost\boost_1_49_0\boost/interprocess/smart_ptr/unique_ptr.hpp(94) : see reference to class template instantiation 'boost::interprocess::ipcdetail::pointer_type<T,D>' being compiled with [ T=Request, D=boost::interprocess::deleter<Request,boost::interprocess::segment_manager<char,boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family>,boost::interprocess::iset_index>> ] T.cpp(34) : see reference to class template instantiation 'boost::interprocess::unique_ptr<T,D>' being compiled with [ T=Request, D=boost::interprocess::deleter<Request,boost::interprocess::segment_manager<char,boost::interprocess::rbtree_best_fit<boost::interprocess::mutex_family>,boost::interprocess::iset_index>> ] C:\Program Files\boost\boost_1_49_0\boost/interprocess/detail/pointer_type.hpp(64) : error C2947: expecting '>' to terminate template-argument-list, found '<' C:\Program Files\boost\boost_1_49_0\boost/interprocess/detail/pointer_type.hpp(64) : error C3203: 'remove_reference' : unspecialized class template can't be used as a template argument for template parameter 'D', expected a real type C:\Program Files\boost\boost_1_49_0\boost/interprocess/detail/pointer_type.hpp(64) : error C2955: 'boost::interprocess::ipcdetail::remove_reference' : use of class template requires template argument list C:\Program Files\boost\boost_1_49_0\boost/interprocess/detail/type_traits.hpp(30) : see declaration of 'boost::interprocess::ipcdetail::remove_reference' C:\Program Files\boost\boost_1_49_0\boost/interprocess/detail/pointer_type.hpp(64) : error C2143: syntax error : missing ';' before '>' C:\Program Files\boost\boost_1_49_0\boost/interprocess/detail/pointer_type.hpp(64) : error C2039: 'type' : is not a member of '`global namespace'' C:\Program Files\boost\boost_1_49_0\boost/interprocess/detail/pointer_type.hpp(64) : error C2039: 'type' : is not a member of '`global namespace'' C:\Program Files\boost\boost_1_49_0\boost/interprocess/detail/pointer_type.hpp(64) : error C2238: unexpected token(s) preceding ';' C:\Program Files\boost\boost_1_49_0\boost/interprocess/smart_ptr/unique_ptr.hpp(94) : error C2039: 'type' : is not a member of 'boost::interprocess::ipcdetail::pointer_type<T,D>' ................ This example works fine in boost 1.48.0 I submit a ticket ( https://svn.boost.org/trac/boost/ticket/6648 #6648 ) to boost::interprocess, but no any reply since 3 weeks ago, So I just ask how to solve this problem or any direction? Thanks. -- View this message in context: http://boost.2283326.n4.nabble.com/boost-interprocess-managed-unique-ptr-ca… Sent from the Boost - Users mailing list archive at Nabble.com.

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Metric_TSP_approx example
by Jeff Wang 20 Mar '12

20 Mar '12

Hello, I am looking at metric_tsp_approx.cpp example file to test the TSP issue. My vertex points: 0(0.68,2.72),1(1.69,1.13),2(2.78,2.29),3(1.02,2.47),4(0.83,0.71),5(2.59,0.52) The metric_tsp_approx_tour give the result: 0,3,1,2,4,5,0. I think 0,3,1,2,5,4,0 is better than the previous result, am I wrong? Also, I do not want to have the result like connecting vertex 2 and 4, so I added a larger edge_weight value, say 1000.0 between 2 and 4, but the result is the same as that of genneral vertext distance weight, how could I make the tsp tour does not go from 2 to 4? Thanks, Jeff

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[Boost::Python] ensuring destructors are called when executing scripts
by Andy Falanga (afalanga) 20 Mar '12

20 Mar '12

Hi everyone, I'm working on an API that will be used in Python. I'm running some of my teams unit tests to test some new functionality. (These use the Python unit test framework though I admit I don't understand it.) The exposed class has an "interface" among its many member fields. This abstract class is, I believe, correctly defined. That is, the abstract class defines a virtual destructor. The derived classes define non-virtual destructors. When I use a smaller test python script that doesn't use the unit test framework for Python, all of these destructors seem to be called correctly. However, when using the unit test framework, this doesn't seem to be the case. I believe this to be problem anyway because when I use the unit test scripts, I get a BSOD. (The BSOD is because these classes use a propriety driver that was written by our team for underlying hardware.) When I call this class directly, in my other script, the destructors are called properly because things work and there's no BSOD. I found a posting to some python support group where someone was having a similar problem. They mentioned that using Py_Finalize seemed to fix this but that it shouldn't be used with Boost. I'd like to know what's going on first of all. I'm not a python "anything". Before now, I've never used the language. Is there some way to ensure that C++ destructors are called? One of the respondents to the thread I mentioned said something about the interpreter still hold references and using a clear() method. However, the code he/she provided to illustrate wasn't python code at all but C++. It was as if they didn't understand the OP's request. Any help is greatly appreciated. Andy

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boost link error
by Pervez, Salman 20 Mar '12

20 Mar '12

Hi everyone, I need some help debugging a link error I am getting. I am trying to compile an application that uses boost, here is the error. g++ -g -O2 -o .libs/sesame sesame-SysAgent.o sesame-Sysimage.o sesame-Package.o -L/home/spervez1/db-4.6.21/build_unix/lib -L/home/spervez1/boost_1_49_0/lib\ /home/spervez1/qpidc-0.14/src/.libs/libqmf.so /home/spervez1/qpidc-0.14/src/.libs/libqmfengine.so /home/spervez1/qpidc-0.14/src/.libs/libqpidclient.so /hom\ e/spervez1/qpidc-0.14/src/.libs/libqpidcommon.so -lboost_program_options -lboost_filesystem -ldl /home/spervez1/qpidc-0.14/src/.libs/libqpidtypes.so -luuid \ /home/spervez1/dbus-1.4.16/dbus/.libs/libdbus-1.so -lpthread -lrt -Wl,--rpath -Wl,/home/spervez1/qpid-tools/lib -Wl,--rpath -Wl,/home/spervez1/dbus-1.4.16/\ lib /usr/bin/ld: warning: libboost_system.so.1.49.0, needed by /home/spervez1/boost_1_49_0/lib/libboost_filesystem.so, not found (try using -rpath or -rpath-link) /home/spervez1/qpidc-0.14/src/.libs/libqpidcommon.so: undefined reference to `boost::system::system_category()' /home/spervez1/qpidc-0.14/src/.libs/libqpidcommon.so: undefined reference to `boost::system::generic_category()' collect2: ld returned 1 exit status I have boost installed in /home/spervez1/boost_1_49_0/ Here are the two commands that led to this error CPPFLAGS="-I/home/spervez1/db-4.6.21/build_unix/include -I/home/spervez1/boost_1_49_0/include" LDFLAGS="-L/home/spervez1/db-4.6.21/build_unix/lib -L/home/spervez1/boost_1_49_0/lib" ./configure --with-qpid-checkout=/home/spervez1/qpidc-0.14 --with-db4-devel=/home/spervez1/db-4.6.21/build_unix --with-boost=/home/spervez1/boost_1_49_0/ make I've researched some online and others have been able to solve this problem by adding the -lboost_filesystem flag which already exists in the makefile command so I'm a bit confused what the error could be. I'll appreciate any input on this. Thanks. Salman ________________________________ CONFIDENTIALITY AND SECURITY NOTICE The contents of this message and any attachments may be confidential and proprietary and also may be covered by the Electronic Communications Privacy Act. This message is not intended to be used by, and should not be relied upon in any way, by any third party. If you are not an intended recipient, please inform the sender of the transmission error and delete this message immediately without reading, disseminating, distributing or copying the contents. Citadel makes no assurances that this e-mail and any attachments are free of viruses and other harmful code.

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some simple questions on Date/Time parsing and formatting
by John M. Dlugosz 20 Mar '12

20 Mar '12

The Boost function ptime from_iso_string seems to only take part of a ISO 8601 date string. In particular, strings coming from XML will have a trailing Z. Even knowing that we will always get 'Z' and not some arbitrary timezone information, it seems a kludge to truncate the last character from the string before feeding it to a function that claims to parse an ISO date/time string. Am I missing something? Second, is there a simple function to format a ptime using the conventions of the current Locale? I see functions for "simple" and "iso", but user-facing output (as opposed to creating an XML file) needs to use local conventions. Thanks, —John

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[Graph] Example: astar_search_no_init over an infinite, implicit graph
by Luke Meyers 20 Mar '12

20 Mar '12

Having finally gotten this working, I wanted to share it. As the topic states, this is an implementation of an infinite, implicit graph, and an example that searches the graph with astar_search_no_init. I didn't find any examples out there of anyone doing this particular thing, so I hope it may be helpful to my fellow travelers. This code is a bastardization of some stuff from a game I'm working on (blatant plug: http://snarglequest.blogspot.com/) and the "city search" example code from the BGL docs. I'm sure it could be more concise, but I hope you'll find it accessible. Oh, and critiques would of course be welcome. I said it's working, not perfect; I'm sure there are many things I could be doing in better ways, and I'd love to know about them. Luke /** * Example use of boost::astar_search_no_init on an infinite, implicitly-defined graph. * * The graph type used here is XYGraph, representing an infinite grid of squares. Each * square is connected to its eight neighbors; however, the example shows how to use * boost::filtered_graph to make the search take place only along orthogonal edges. */ #include <iostream> #include <list> #include <map> #include <set> #include <utility> #include <boost/graph/graph_traits.hpp> #include <boost/graph/astar_search.hpp> #include <boost/graph/filtered_graph.hpp> #include <boost/operators.hpp> #include <boost/ref.hpp> namespace Direction { enum id { MIN = 0, N = MIN, S, E, W, NW, NE, SE, SW, NONE }; } struct XY : public boost::additive<XY, boost::totally_ordered<XY, boost::equivalent<XY> > > { typedef int X; typedef int Y; XY(X x = 0, Y y = 0); // Same square counts. bool adjacentTo(XY const& that) const; XY & operator=(XY const& that); XY & operator+=(XY const& that); bool operator<(XY const& that) const; X x; Y y; XY neighbor(Direction::id direction) const; std::set<XY> allNeighbors() const; }; std::ostream & operator<<(std::ostream & os, XY const& xy); struct neighbor_iterator; /* * Model of: * * Graph * * IncidenceGraph */ struct XYGraph { XYGraph(); // Graph concept requirements typedef XY vertex_descriptor; typedef std::pair<XY, XY> edge_descriptor; typedef boost::undirected_tag directed_category; typedef boost::disallow_parallel_edge_tag edge_parallel_category; typedef boost::incidence_graph_tag traversal_category; // IncidenceGraph concept requirements typedef neighbor_iterator out_edge_iterator; typedef int degree_size_type; }; namespace boost { template <> struct graph_traits<XYGraph> { typedef XYGraph G; typedef G::vertex_descriptor vertex_descriptor; typedef G::edge_descriptor edge_descriptor; typedef G::out_edge_iterator out_edge_iterator; typedef G::directed_category directed_category; typedef G::edge_parallel_category edge_parallel_category; typedef G::traversal_category traversal_category; typedef G::degree_size_type degree_size_type; typedef void in_edge_iterator; typedef void vertex_iterator; typedef void vertices_size_type; typedef void edge_iterator; typedef void edges_size_type; }; } // IncidenceGraph concept requirements std::pair<XYGraph::out_edge_iterator, XYGraph::out_edge_iterator> out_edges(XYGraph::vertex_descriptor v, XYGraph const& g); XYGraph::degree_size_type out_degree(XYGraph::vertex_descriptor v, XYGraph const& g); XYGraph::vertex_descriptor source(XYGraph::edge_descriptor e, XYGraph const& g); XYGraph::vertex_descriptor target(XYGraph::edge_descriptor e, XYGraph const& g); // Iterator struct neighbor_iterator : public boost::iterator_facade<neighbor_iterator, std::pair<XY,XY>, boost::forward_traversal_tag, std::pair<XY,XY> > { public: neighbor_iterator(); neighbor_iterator(XY xy, Direction::id direction); neighbor_iterator & operator=(neighbor_iterator const& that); std::pair<XY,XY> operator*() const; void operator++(); bool operator==(neighbor_iterator const& that) const; bool equal(neighbor_iterator const& that) const { return operator==(that); } void increment() { operator++(); } private: XY xy; Direction::id direction; }; struct orthogonal_only; template <typename Graph> class distance_heuristic; struct found_goal {}; // exception for termination // visitor that terminates when we find the goal class astar_goal_visitor : public boost::default_astar_visitor { public: astar_goal_visitor(XY goal) : m_goal(goal) {} virtual void examine_vertex(XY xy, XYGraph const& g) { std::cout << "Exploring " << xy << "..." << std::endl; if(xy == m_goal) throw found_goal(); } virtual void examine_vertex(XY xy, boost::filtered_graph<XYGraph, orthogonal_only> const& g) { std::cout << "Exploring " << xy << "..." << std::endl; if(xy == m_goal) throw found_goal(); } private: XY m_goal; }; template <typename K, typename V> class default_map { public: typedef K key_type; typedef V data_type; typedef std::pair<K,V> value_type; default_map(V const& defaultValue) : defaultValue(defaultValue) {} V & operator[](K const& k) { if (m.find(k) == m.end()) { m[k] = defaultValue; } return m[k]; } private: std::map<K,V> m; V const defaultValue; }; struct PredecessorMap { PredecessorMap() {} PredecessorMap(PredecessorMap const& that) : m(that.m) {} typedef XY key_type; typedef XY value_type; typedef XY & reference_type; typedef boost::read_write_property_map_tag category; XY & operator[](XY xy) { return m[xy]; } std::map<XY,XY> m; }; XY get(PredecessorMap const& pm, XY xy) { std::map<XY,XY>::const_iterator found = pm.m.find(xy); return (found != pm.m.end()) ? found->second : xy; } void put(PredecessorMap & pm, XY key, XY value) { pm.m[key] = value; } // Filter used to traverse grid only along orthogonal (non-diagonal) edges. struct orthogonal_only { typedef std::pair<XY,XY> Edge; bool operator()(Edge const& edge) const { return edge.first.x == edge.second.x || edge.first.y == edge.second.y; } }; // Euclidean distance heuristic (square root omitted) template <typename Graph> class distance_heuristic : public boost::astar_heuristic<Graph, int> { public: distance_heuristic(XY goal) : m_goal(goal) {} unsigned operator()(XY xy) { int dx = m_goal.x - xy.x; int dy = m_goal.y - xy.y; unsigned retval = static_cast<unsigned>(dx * dx + dy * dy); return retval; } private: XY m_goal; }; int main(int argc, char **argv) { XYGraph baseGraph; boost::filtered_graph<XYGraph, orthogonal_only> g(baseGraph, orthogonal_only()); //BOOST_CONCEPT_ASSERT((IncidenceGraphConcept< boost::filtered_graph<XYGraph, orthogonal_only> >)); XY start(0,0); XY goal(5,7); std::cout << "Start vertex: " << start << std::endl; std::cout << "Goal vertex: " << goal << std::endl; PredecessorMap p; typedef boost::associative_property_map< default_map<XY,unsigned> > DistanceMap; typedef default_map<XY,unsigned> WrappedDistanceMap; WrappedDistanceMap wrappedMap = WrappedDistanceMap(std::numeric_limits<unsigned>::max()); wrappedMap[start] = 0; DistanceMap d = DistanceMap(wrappedMap); try { astar_search_no_init(g, start, distance_heuristic<XYGraph>(goal) , visitor(astar_goal_visitor(goal)) . distance_map(d) . predecessor_map(boost::ref(p)) . weight_map(boost::associative_property_map< default_map<std::pair<XY,XY>,unsigned> >( default_map<std::pair<XY,XY>,unsigned>(1))) . vertex_index_map(boost::associative_property_map< std::map<XY,unsigned> >(std::map<XY,unsigned>())) . rank_map(boost::associative_property_map< std::map<XY,unsigned> >(std::map<XY,unsigned>())) . color_map(boost::associative_property_map< std::map<XY,boost::default_color_type> >( std::map<XY,boost::default_color_type>())) . distance_compare(std::less<unsigned>()) . distance_combine(std::plus<unsigned>()) ); } catch(found_goal const&) { // found a path to the goal std::list<XY> shortest_path; for(XY xy = goal;; xy = p[xy]) { shortest_path.push_front(xy); if(p[xy] == xy) break; } std::cout << "Shortest path from " << start << " to " << goal << ": "; std::list<XY>::iterator spi = shortest_path.begin(); std::cout << start; for(++spi; spi != shortest_path.end(); ++spi) std::cout << " -> " << (*spi); std::cout << std::endl; return 0; } std::cout << "Didn't find a path from " << start << "to" << goal << "!" << std::endl; return 0; } XYGraph::XYGraph() {} std::pair<XYGraph::out_edge_iterator, XYGraph::out_edge_iterator> out_edges(XYGraph::vertex_descriptor v, XYGraph const& g) { return std::make_pair( XYGraph::out_edge_iterator(v, Direction::MIN), XYGraph::out_edge_iterator(v, Direction::NONE) ); } XYGraph::degree_size_type out_degree(XYGraph::vertex_descriptor v, XYGraph const& g) { return v.allNeighbors().size(); } XYGraph::vertex_descriptor source(XYGraph::edge_descriptor e, XYGraph const& g) { return e.first; } XYGraph::vertex_descriptor target( XYGraph::edge_descriptor e, XYGraph const& g) { return e.second; } neighbor_iterator::neighbor_iterator() {} neighbor_iterator::neighbor_iterator(XY xy, Direction::id direction) : xy(xy) , direction(direction) { } neighbor_iterator & neighbor_iterator::operator=(neighbor_iterator const& that) { xy = that.xy; direction = that.direction; return *this; } std::pair<XY,XY> neighbor_iterator::operator*() const { std::pair<XY,XY> const retval = std::make_pair(xy, xy.neighbor(direction)); return retval; } void neighbor_iterator::operator++() { direction = static_cast<Direction::id>(int(direction) + 1); } bool neighbor_iterator::operator==(neighbor_iterator const& that) const { return xy == that.xy && direction == that.direction; } XY::XY(X x, Y y) : x(x) , y(y) { } bool XY::adjacentTo(XY const& that) const { return abs(x - that.x) <= 1 && abs(y - that.y) <= 1; } XY & XY::operator=(XY const& that) { x = that.x; y = that.y; return *this; } XY & XY::operator+=(XY const& that) { x += that.x; y += that.y; return *this; } bool XY::operator<(XY const& that) const { return x < that.x || (x == that.x && y < that.y); } std::ostream & operator<<(std::ostream & os, XY const& xy) { os << "(" << xy.x << "," << xy.y << ")"; return os; } XY XY::neighbor(Direction::id direction) const { using namespace Direction; int dx = 0, dy = 0; switch (direction) { case NW: case W: case SW: dx = -1; break; case NE: case E: case SE: dx = 1; } switch (direction) { case NW: case N: case NE: dy = -1; break; case SW: case S: case SE: dy = 1; } XY const neighbor(x + dx, y + dy); return neighbor; } std::set<XY> XY::allNeighbors() const { std::set<XY> neighbors; for (int dx = -1; dx <= 1; ++dx) for (int dy = -1; dy <= 1; ++dy) neighbors.insert(XY(x+dx,y+dy)); return neighbors; }

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Tokenizer - multiple separators
by asif saeed 20 Mar '12

20 Mar '12

Hi, Can I pass multiple separators (for example ";|") in a char_sep to Boost::Tokenizer? Can I then use boost is_any_of to tokenize of any of these separator characters? Can you give me an example? Does Boost::Tokenizer already do this? Thanks in advance. Best regards, Asif

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[XML] validate closing tags with boost property tree read_xml?
by Simon Coakley 20 Mar '12

20 Mar '12

boost::property_tree::xml_parser::read_xml uses the default rapidxml behaviour of not validating closing tags. With rapidxml you can use the flag parse_validate_closing_tags to turn this on. Boost does not support any such flag. Is there anyway to turn it on using Boost or will I have to use rapidxml directly? Thanks

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Status of move semantics with boost::optional
by mark pashley 20 Mar '12

20 Mar '12

Rvalue references and Move semantics are a major C++11 feature that can significantly speed up code by reducing unnecessary copies. The STL has been updated to use this new feature when a c++11/0x compiler is used (e.g. gcc 4.6) I stumbled across this ticket : https://svn.boost.org/trac/boost/ticket/1841 which discusses the addition of move semantics to boost::optional. Is there any news on when the boost::optional library will support move semantics? I am primarily interested in using this library with a c++11/0x compiler (e.g. GCC 4.6). -- View this message in context: http://boost.2283326.n4.nabble.com/Status-of-move-semantics-with-boost-opti… Sent from the Boost - Users mailing list archive at Nabble.com.

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[Graph] filtered_graph of IncidenceGraph is not an IncidenceGraph
by Luke Meyers 20 Mar '12

20 Mar '12

Hello, list. First time poster, sometime reader. Today I finally achieved a milestone I've been working towards in my BGL-oriented project: I got astar_search_no_init working on an implicit graph. Now I want to filter the input graph to restrict the search, and I'm running into trouble with filtered_graph. My implicit graph class is a model of IncidenceGraph, as required by astar_search_no_init, but when I apply filtered_graph to it I find that the result is no longer an IncidenceGraph (according to BOOST_CONCEPT_ASSERT). The filtered_graph documentation saith: If the underlying Graph type models VertexAndEdgeListGraph and > PropertyGraph then so does the filtered graph. If the underlying Graph type > models fewer or smaller concepts than these, then so does the filtered > graph. >From this, I would assume that if I run filtered_graph on an IncidenceGraph, the result will be a model of IncidenceGraph, not just of Graph. Also, if my input is an IncidenceGraph and not a VertexAndEdgeListGraph, I'd hope compilation would not fail if I don't have graph_traits defined for types required by VertexAndEdgeListGraph, but it does: c:\src\boost_1_49_0\boost\graph\filtered_graph.hpp(181) : error C2039: > 'in_edge_iterator' : is not a member of 'boost::graph_traits<XYGraph>' When I provide a bunch of dummy typedefs to get around this error, I can get to the point of doing a BOOST_CONCEPT_ASSERT((IncidenceGraphConcept<* FilteredGraphType*>)). This fails: c:\src\boost_1_49_0\boost\graph\graph_concepts.hpp(94) : error C2679: > binary '=' : no operator found which takes a right-hand operand of type > 'XY' (or there is no acceptable conversion) XY here is my vertex descriptor type. The edge descriptor is a pair<XY,XY>, but for some reason it's getting XY out of the graph_traits instead and failing in this strange way. Am I missing something? Are my expectations incorrect? Is this actually a bug (or two)? At the bottom is a decently small example that fails for me (some function bodies excised for brevity -- my concerns are pre-link). Is there a way to work around this without making my graph into a model of VertexAndEdgeListGraph? Since my graph is infinite, this would hardly seem sensible. Thanks in advance for any assistance. Incidentally, if anyone's interested to see a working example of astar_search_no_init over an implicit graph, I'd be happy to clean up the code a little and post it. Luke Project blog (SnargleQuest, a Roguelike game): http://snarglequest.blogspot.com/ // Code listing #include <iostream> #include <list> #include <map> #include <set> #include <utility> #include <boost/graph/filtered_graph.hpp> #include <boost/graph/graph_concepts.hpp> #include <boost/graph/graph_traits.hpp> #include <boost/operators.hpp> using namespace boost; using namespace std; namespace Direction { enum id { MIN = 0, N = MIN, S, E, W, NW, NE, SE, SW, NONE, NUM_DIRECTIONS }; } struct XY : public boost::additive<XY, boost::totally_ordered<XY, boost::equivalent<XY> > > { typedef int X; typedef int Y; XY(X x = 0, Y y = 0); XY & operator=(XY const& that); XY & operator+=(XY const& that); bool operator<(XY const& that) const; X x; Y y; }; std::ostream & operator<<(std::ostream & os, XY const& xy); struct neighbor_iterator; /* * Model of: * * Graph * * IncidenceGraph */ struct XYGraph { XYGraph(); // Graph concept requirements typedef XY vertex_descriptor; typedef std::pair<XY, XY> edge_descriptor; typedef undirected_tag directed_category; typedef disallow_parallel_edge_tag edge_parallel_category; typedef incidence_graph_tag traversal_category; // IncidenceGraph concept requirements typedef neighbor_iterator out_edge_iterator; typedef int degree_size_type; }; // IncidenceGraph concept requirements std::pair<XYGraph::out_edge_iterator, XYGraph::out_edge_iterator> out_edges(XYGraph::vertex_descriptor v, XYGraph const& g); XYGraph::degree_size_type out_degree(XYGraph::vertex_descriptor v, XYGraph const& g); XYGraph::vertex_descriptor source(XYGraph::edge_descriptor e, XYGraph const& g); XYGraph::vertex_descriptor target(XYGraph::edge_descriptor e, XYGraph const& g); // Iterator struct neighbor_iterator : public boost::forward_iterator_helper<neighbor_iterator, XY, std::ptrdiff_t, XY *, XY> { public: neighbor_iterator(); neighbor_iterator(XY xy, Direction::id direction); neighbor_iterator & operator=(neighbor_iterator const& that); std::pair<XY,XY> operator*() const; void operator++(); bool operator==(neighbor_iterator const& that) const; }; namespace boost { template <> struct graph_traits<XYGraph> { typedef XYGraph G; typedef G::vertex_descriptor vertex_descriptor; typedef G::edge_descriptor edge_descriptor; typedef G::out_edge_iterator out_edge_iterator; typedef G::directed_category directed_category; typedef G::edge_parallel_category edge_parallel_category; typedef G::traversal_category traversal_category; typedef G::degree_size_type degree_size_type; // Shouldn't have to do this! typedef void in_edge_iterator; typedef void vertex_iterator; typedef void vertices_size_type; typedef void edge_iterator; typedef void edges_size_type; }; } struct orthogonal_only { typedef pair<XY,XY> Edge; bool operator()(Edge const& edge) { return edge.first.x == edge.second.x || edge.first.y == edge.second.y; } }; int main(int argc, char **argv) { BOOST_CONCEPT_ASSERT((IncidenceGraphConcept<XYGraph>)); // This fails BOOST_CONCEPT_ASSERT((IncidenceGraphConcept< filtered_graph<XYGraph, orthogonal_only> >)); return 0; }

3 4

boost::noncopyable - I see
by John M. Dlugosz 20 Mar '12

20 Mar '12

The compiler (VS10) generates this when the copy constructor is used somewhere by mistake. It doesn't tell me where the offending use is, unlike putting a private dummy declaration right in the class. So it did its job, but is most unfriendly about it.

1 0

[Iterator] shared_container_iterator usability
by Szymon Gatner 19 Mar '12

19 Mar '12

Hello boosters, a design question: how often (if ever) and under which circumstances do you use shared_container_iterator? (http://www.boost.org/doc/libs/1_49_0/libs/utility/shared_container_iterator…) I don't feel too good about allocating a vector<> on the heap but I guess it was made for some reason and motivated by actuall need. What are good use cases for such iterator? Obviously returning a container from function (as presented in example) is not one of them. Cheers, Simon

3 4

Thread safety in Boost.Test
by Eric Teutsch 19 Mar '12

19 Mar '12

I found this article from 2003. http://lists.boost.org/Archives/boost/2003/02/44515.php I gather that 9 years later, Boost.Test is still not thread-safe (at least it's still on the To-Do list). Can somebody explain what BOOST_TEST_THREAD_SAFE accomplishes? Thanks, Eric T This message, and the documents attached hereto, is intended only for the addressee and may contain privileged or confidential information. Any unauthorized disclosure is strictly prohibited. If you have received this message in error, please notify us immediately so that we may correct our internal records. Please then delete the original message. Thank you.

1 0

[Geometry] Calculating distances on the earth
by Sean Farrow 19 Mar '12

19 Mar '12

Hi all: I need to calculate distances on the earth. Ideally I'd like to use the haversine formula. There is an example in the docs at: http://www.boost.org/doc/libs/1_49_0/libs/geometry/doc/html/geometry/quicks… under the non-Cartesian heading. Will this do what I need, or do I need the Geographical coordinate system, (if yes where is this available and what features does this supply?) Any help appreciated. Regards Sean.

2 5

convert a boost::iostreams::filter_streambuf to a std::wofstream
by Sean Farrow 19 Mar '12

19 Mar '12

Hi: I'm trying to pass a boost::iostreams::filtering_streambuf to a boost::archive constructor. I'm using visual studio 2010, and am getting c2664 telling me that this conversion carn't be performed. Is there anyway I can convert a boost::iostreams::filtering_streambuf. Any help appreciated. Cheers Sean.

1 0

(no subject)
by David Bergman 19 Mar '12

19 Mar '12

Hello, I just subscribed to this mailing list. I have a question that I originally sent to David Abrahams, and I'm hoping someone can help. Dear Sir or Madam, I am currently using boost in a simulator and have a few questions regarding the special functions that are (are not) available. 1. Do your special functions accept complex numbers as input and provide complex output? I am specifically interested in the Bessel functions. In most applications the argument is restricted to be positive and the index to be real. However, Bessel functions are defined for complex index and argument, the former arises in acoustic and optical wave guide problems.If the answer to 1 is no I’d suggest these capabilities as a future nice to have. 2. Does Boost plan to have hypergeometric functions in the future? They are currently listed as unsupported TR1 functions. I have not been able to find them in TR1 either but I’m not done looking. Thanks in advance for your help. David

4 6

Re: [Boost-users] boost.zlib on Windows
by László Marák 19 Mar '12

19 Mar '12

It was the question of binary files. Thank You for Your help. Message: 5 Date: Mon, 19 Mar 2012 10:57:29 -0400 From: "Andrew Holden" <aholden(a)charteroaksystems.com> To: <boost-users(a)lists.boost.org> Subject: Re: [Boost-users] boost.zlib on Windows Message-ID: < 1D97E025367AFB4A8C528590A3715BF4425F20(a)archerysummit2.willamette.charteroaksystems.com > Content-Type: text/plain; charset="iso-8859-1" On Sunday, March 18, 2012 10:05 AM, L?szl? Mar?k wrote: > > I would like to ask You what is the status of Boost.zlib on > Windows. I have a program that uses Boost.iostreams to create > a gzip file. It compiles both on Windows and Linux and on > Linux it creates a functional gz file. On Windows it creates > a gz file but when I try to decompress the file it gives me > "data error". > > When I look at Boost's regression tests both gzip and zlib is > missing on Windows. Has anybody successfully run Boost.zlib > on Windows recently? Is there some flush method that should > be called, but on Linux it does not show any symptoms? I agree with Artyom Beilis. It sounds like you're opening the files in text mode. This causes Windows to insert a carriage return (0x0D) before each line feed (0x0A), but has no effect on Linux or other Unix-like operating systems. Here is the actual code I use to open a gz or bz2 file for writing in one of my projects, which produced valid gz files with boost 1.48 (untested with 1.49) and Visual Studio 2010, both in i386 and AMD64 modes. Ignore the references to tbb::scalable_allocator. In particular, note the last line where I specify the file_sink should be binary: boost::iostreams::filtering_stream <boost::iostreams::output, char, std::char_traits <char>, tbb::scalable_allocator <char>> output_file; if (boost::iends_with (file_name, ".gz")) output_file.push (boost::iostreams::basic_gzip_compressor <tbb::scalable_allocator <char>> (boost::iostreams::zlib::best_compression)); else if (boost::iends_with (file_name, ".bz2")) output_file.push (boost::iostreams::basic_bzip2_compressor <tbb::scalable_allocator <char>> ()); output_file.push (boost::iostreams::file_sink (file_name.c_str(), std::ios::out | std::ios::binary));

1 0

boost.zlib on Windows
by László Marák 19 Mar '12

19 Mar '12

Dear Boost Users, I would like to ask You what is the status of Boost.zlib on Windows. I have a program that uses Boost.iostreams to create a gzip file. It compiles both on Windows and Linux and on Linux it creates a functional gz file. On Windows it creates a gz file but when I try to decompress the file it gives me "data error". When I look at Boost's regression tests both gzip and zlib is missing on Windows. Has anybody successfully run Boost.zlib on Windows recently? Is there some flush method that should be called, but on Linux it does not show any symptoms? Thank You in advance, UJ

5 4

Boost Windows Runtime / WinRT support
by stren tler 19 Mar '12

19 Mar '12

Hi, are there any plans to Support Windows Runtime / WinRT? For example a port of boost asio which uses Windows::Networking::Sockets::StreamSocket … ?

1 0

how to contribute documentation for boost.enum in the boost vault
by Carsten Greiner 17 Mar '12

17 Mar '12

Hello, in the boost vault exists the boost_enum library. (file name enum_rev4.6.zip). and I have four questions: - provided I create documentation for it, could someone assist me in adding it to the package? - which mailing list is appropriate for reviewing feedback of the created documentation (maybe that Q applies to all of my points) - what format should I use when creating the documentation - and last but not least: adding it to the official release would be initiated then via the development list, right? cheers, Carsten.

2 2

Status of TTI lib?
by Neal Becker 17 Mar '12

17 Mar '12

What is the status? What boost release will include TTI?

2 1

Lis tes messages avant qu'ils ne soient effacés!
by Badoo 17 Mar '12

17 Mar '12

Lis ton message de Veron avant qu'il ne soit effacé! Pour lire ton message, suis simplement ce lien: http://eu1.badoo.com/0272478031/in/hbnnNDOo1Ps/?lang_id=6&m=65&mid=4f6424c9… D'autres personnes à proximité qui sont sur Badoo Latino (Meudon, France) Aline (Meudon, France) Agent (Meudon, France) http://eu1.badoo.com/0272478031/in/hbnnNDOo1Ps/?lang_id=6&m=65&mid=4f6424c9… Le lien ne fonctionnent pas dans ce message ? Copie le dans la barre d'adresse de ton navigateur. Tu as reçu cet email suite à une requête de Veron auprès de notre système. S'il s'agit d'une erreur, ignore simplement cet email. La requête sera alors effacée du système. Amuse-toi bien ! L'équipe Badoo Courrier automatique de Badoo suite à l'envoi d'un message à ton attention sur Badoo. Les réponses ne sont ni stockées, ni traitées. Si tu ne veux plus recevoir de messages de Badoo, fais-le nous savoir: http://eu1.badoo.com/impersonation.phtml?lang_id=6&mail_code=65&email=boost…

1 0

boost error
by Pervez, Salman 16 Mar '12

16 Mar '12

Hi everyone, I am trying to do a source build for qpid 0.14. I am running into a boost dependency error which I am unable to solve. Here is the error... /usr/bin/ld: cannot find -lboost_program_options collect2: ld returned 1 exit status make[2]: *** [libqpidcommon.la] Error 1 I also built boost from source so its no surprise that it cannot find the required file in /usr/bin/ld. Perhaps there is a way to tell it where to find boost? I passed the location of my boost build to the configure script through a CPPFLAG which helps it find the hpp files but perhaps not this one. I realize the error output is limited but I also didn't want to mess everything up with meaningless output. If you require more info I'll be happy to post the rest of the output along with the error message. I'll appreciate any input on this. Thanks! Salman ________________________________ CONFIDENTIALITY AND SECURITY NOTICE The contents of this message and any attachments may be confidential and proprietary and also may be covered by the Electronic Communications Privacy Act. This message is not intended to be used by, and should not be relied upon in any way, by any third party. If you are not an intended recipient, please inform the sender of the transmission error and delete this message immediately without reading, disseminating, distributing or copying the contents. Citadel makes no assurances that this e-mail and any attachments are free of viruses and other harmful code.

2 3

[Thread] Timed join returning true before thread terminated
by John Rocha 16 Mar '12

16 Mar '12

Hello, I'm working on a multi-threaded application that uses boost threads. The threads are deployed in a cascading mechanism such as: Main thread creates thread1 thread 1 creates threads 2, 3 and 4 thread 2 creates threads 5-14 The shutdown mechanism is to send a thread interrupt and then do a timed join to wait for the child thread[s] to finish their shutdown. So Main sends a thread interrupt to thread1, and then waits for X seconds thread 1 sends a thread interrupt to thread 2, and does a timed wait, then thread 3 and wait then thread 4 and wait thread 2 does the same for each of its children: send a thread interrupt and then wait. The problem is, that on rare occasions (1 out of 474 attempts in my last test cycle), thread 1 will return early from the timed_join, and it returns true, indicating the child thread is dead -- but it's not. I have timed logging that shows when a specific threads, shutdown activities start and stop, and I can see that thread 1 isn't waiting 10 seconds for the child to exit, and I can see the child is still running. Any suggestions for this? The only thing I can think of right now is that maybe thread1 is getting an interrupt for something that is causing it to leave it's timed_join early? I haven't looked into the boost code for this yet. I'm hoping that this is something others have encountered and already solved? Or maybe other debugging tips could be provided? Thanks in advance, -=John

4 15

bjam hangs for boost.python quickstart on mac ox
by Harry Griff 16 Mar '12

16 Mar '12

Hi, I have downloaded boost_1_49_0 to my Mac with OS X 10.5.8. I then ran: In the home folder I have: using python : 3.1 : /Library/Frameworks/Python.framework/Versions/3.1/bin/python3.1 ; In user-config.jam. I then ran the following: *** *** Start Screen dump 1 *** $ ./bjam --with-python --user-config=user-config.jam Building the Boost C++ Libraries. Component configuration: - chrono : not building - date_time : not building - exception : not building - filesystem : not building - graph : not building - graph_parallel : not building - iostreams : not building - locale : not building - math : not building - mpi : not building - program_options : not building - python : building - random : not building - regex : not building - serialization : not building - signals : not building - system : not building - test : not building - thread : not building - timer : not building - wave : not building ...patience... ...patience... ...found 1599 targets... ...updating 2 targets... darwin.link.dll bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/libboost_python3.dylib Undefined symbols: "_PyFile_AsFile", referenced from: boost::python::exec_file(boost::python::str, boost::python::api::object, boost::python::api::object)in exec.o "_PyString_FromFormat", referenced from: boost::python::converter::rvalue_from_python_stage2(_object*, boost::python::converter::rvalue_from_python_stage1_data&, boost::python::converter::registration const&)in from_python.o boost::python::converter::(anonymous namespace)::throw_no_lvalue_from_python(_object*, boost::python::converter::registration const&, char const*) in from_python.o boost::python::converter::(anonymous namespace)::lvalue_result_from_python(_object*, boost::python::converter::registration const&, char const*) in from_python.o boost::python::converter::registration::to_python(void const volatile*) constin registry.o _enum_repr in enum.o _enum_repr in enum.o "_PyClass_Type", referenced from: _PyClass_Type$non_lazy_ptr in function.o "_PyNumber_Divide", referenced from: boost::python::api::operator/(boost::python::api::object const&, boost::python::api::object const&)in object_operators.o "_PyString_FromStringAndSize", referenced from: boost::python::numeric::(anonymous namespace)::load(bool) in numeric.o boost::python::detail::str_base::str_base(char const*, char const*)in str.o boost::python::detail::str_base::str_base(char const*, char const*)in str.o boost::python::detail::str_base::str_base(char const*, unsigned long)in str.o boost::python::detail::str_base::str_base(char const*, unsigned long)in str.o boost::python::converter::do_return_to_python(char)in builtin_converters.o boost::python::tuple boost::python::make_tuple<boost::python::str, boost::python::api::object, boost::python::str, boost::python::str, boost::python::str, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::str>(boost::python::str const&, boost::python::api::object const&, boost::python::str const&, boost::python::str const&, boost::python::str const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, boost::python::str const&)in function_doc_signature.o boost::python::tuple boost::python::make_tuple<boost::python::api::object, boost::python::str, boost::python::str, boost::python::str, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::str>(boost::python::api::object const&, boost::python::str const&, boost::python::str const&, boost::python::str const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, boost::python::str const&)in function_doc_signature.o boost::python::tuple boost::python::make_tuple<boost::python::str, boost::python::api::object, boost::python::str, boost::python::str, boost::python::str, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >(boost::python::str const&, boost::python::api::object const&, boost::python::str const&, boost::python::str const&, boost::python::str const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)in function_doc_signature.o "_PyInt_Type", referenced from: _PyInt_Type$non_lazy_ptr in enum.o "_PyString_FromString", referenced from: boost::python::detail::str_base::str_base()in str.o boost::python::detail::str_base::str_base()in str.o boost::python::detail::str_base::str_base(char const*)in str.o boost::python::detail::str_base::str_base(char const*)in str.o boost::python::converter::do_return_to_python(char const*)in builtin_converters.o "_PyInt_AsLong", referenced from: boost::python::detail::list_base::count(boost::python::api::object const&) constin list.o boost::python::detail::list_base::index(boost::python::api::object const&) constin list.o boost::python::detail::list_base::insert(boost::python::api::object const&, boost::python::api::object const&)in list.o boost::python::detail::str_base::startswith(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::isupper() constin str.o boost::python::detail::str_base::istitle() constin str.o boost::python::detail::str_base::isspace() constin str.o boost::python::detail::str_base::islower() constin str.o boost::python::detail::str_base::isdigit() constin str.o boost::python::detail::str_base::isalpha() constin str.o boost::python::detail::str_base::isalnum() constin str.o boost::python::detail::str_base::startswith(boost::python::api::object const&) constin str.o boost::python::detail::str_base::startswith(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::find(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::index(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::rfind(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::rindex(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::find(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::index(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::rfind(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::rindex(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::endswith(boost::python::api::object const&) constin str.o boost::python::detail::str_base::find(boost::python::api::object const&) constin str.o boost::python::detail::str_base::index(boost::python::api::object const&) constin str.o boost::python::detail::str_base::rfind(boost::python::api::object const&) constin str.o boost::python::detail::str_base::rindex(boost::python::api::object const&) constin str.o _instance_new in class.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<int, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<int> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<long, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<long> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<signed char, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<signed char> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<short, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<short> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o "_PyNumber_InPlaceDivide", referenced from: boost::python::api::operator/=(boost::python::api::object&, boost::python::api::object const&)in object_operators.o "_PyString_InternFromString", referenced from: _function_get_name in function.o "_PyString_Size", referenced from: boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::converter::(anonymous namespace)::string_rvalue_from_python>::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o "_PyFile_FromString", referenced from: boost::python::exec_file(boost::python::str, boost::python::api::object, boost::python::api::object)in exec.o boost::python::exec_file(boost::python::str, boost::python::api::object, boost::python::api::object)in exec.o "_PyString_Type", referenced from: _PyString_Type$non_lazy_ptr in str.o "_PyInt_FromLong", referenced from: boost::python::numeric::aux::array_base::argmin(long)in numeric.o boost::python::numeric::aux::array_base::argmax(long)in numeric.o boost::python::numeric::aux::array_base::argsort(long)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long, long>(_object*, long const&, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long, long>(_object*, long const&, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long, long>(_object*, long const&, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long>(_object*, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long>(_object*, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, boost::python::api::object, long>(_object*, boost::python::api::object const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::list_base::pop(long)in list.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, boost::python::api::object>(_object*, long const&, boost::python::api::object const&, boost::type<boost::python::api::object>*)in list.o boost::python::objects::enum_base::to_python(_typeobject*, long)in enum.o boost::python::objects::enum_base::to_python(_typeobject*, long)in enum.o boost::python::objects::enum_base::add_value(char const*, long)in enum.o boost::python::objects::enum_base::add_value(char const*, long)in enum.o boost::python::objects::enum_base::export_values() in enum.o boost::python::objects::enum_base::export_values() in enum.o _object* boost::python::api::object_base_initializer<unsigned int>(unsigned int const&)in enum.o _object* boost::python::api::object_base_initializer<unsigned long>(unsigned long const&)in class.o boost::python::objects::function_doc_signature_generator::parameter_string(boost::python::objects::py_function const&, unsigned long, boost::python::api::object, bool)in function_doc_signature.o boost::python::objects::function_doc_signature_generator::pretty_signature(boost::python::objects::function const*, unsigned long, bool)in function_doc_signature.o boost::python::api::object::object<int>(int const&)in function_doc_signature.o boost::python::api::proxy<boost::python::api::slice_policies> boost::python::api::object_operators<boost::python::api::object>::slice<int, boost::python::api::slice_nil>(int const&, boost::python::api::slice_nil const&)in function_doc_signature.o "_Py_InitModule4", referenced from: boost::python::detail::init_module(char const*, void (*)())in module.o "_PyString_AsString", referenced from: _enum_repr in enum.o _enum_repr in enum.o _enum_repr in enum.o boost::python::converter::(anonymous namespace)::convert_to_cstring(_object*) in builtin_converters.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::converter::(anonymous namespace)::string_rvalue_from_python>::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o ld: symbol(s) not found collect2: ld returned 1 exit status "g++" -dynamiclib -Wl,-single_module -install_name "libboost_python3.dylib" -L"/Library/Frameworks/Python.framework/Versions/3.1/lib" -L"/Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/config" -o "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/libboost_python3.dylib" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/numeric.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/list.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/long.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/dict.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/tuple.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/str.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/slice.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/from_python.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/registry.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/type_id.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/enum.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/class.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/function.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/inheritance.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/life_support.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/pickle_support.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/errors.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/module.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/builtin_converters.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/arg_to_python_base.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/iterator.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/stl_iterator.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object_protocol.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object_operators.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/wrapper.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/import.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/exec.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/function_doc_signature.o" -lpython3.1 -headerpad_max_install_names -Wl,-dead_strip -no_dead_strip_inits_and_terms ...failed darwin.link.dll bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/libboost_python3.dylib... ...skipped <pstage/lib>libboost_python3.dylib for lack of <pbin.v2/libs/python/build/darwin-4.0.1/release/threading-multi>libboost_python3.dylib... ...failed updating 1 target... ...skipped 1 target... *** *** End Screen dump 1 *** So I changed to 2.7 in the user config file and got: *** *** Start Screen dump 2 *** ./bjam --with-python --user-config=user-config.jam Building the Boost C++ Libraries. Component configuration: - chrono : not building - date_time : not building - exception : not building - filesystem : not building - graph : not building - graph_parallel : not building - iostreams : not building - locale : not building - math : not building - mpi : not building - program_options : not building - python : building - random : not building - regex : not building - serialization : not building - signals : not building - system : not building - test : not building - thread : not building - timer : not building - wave : not building ...patience... ...patience... ...found 1597 targets... The Boost C++ Libraries were successfully built! The following directory should be added to compiler include paths: /Users/me/Desktop/boost_1_49_0 The following directory should be added to linker library paths: /Users/me/Desktop/boost_1_49_0/stage/lib *** *** End Screen dump 2 *** So that seemed to work. I then entered: *** *** Start Screen dump 3 *** $cd libs/python/example/quickstart/ $../../../../bjam toolset=darwin --verbose-test test ...patience... ...patience... ...found 1680 targets... ...updating 17 targets... common.mkdir bin common.mkdir bin/test_embed.test common.mkdir bin/test_embed.test/darwin-4.0.1 common.mkdir bin/test_embed.test/darwin-4.0.1/debug common.mkdir bin/darwin-4.0.1 common.mkdir bin/darwin-4.0.1/debug darwin.compile.c++ bin/darwin-4.0.1/debug/embedding.o darwin.link bin/darwin-4.0.1/debug/embedding testing.capture-output bin/test_embed.test/darwin-4.0.1/debug/test_embed.run ====== BEGIN OUTPUT ====== registering extension module embedded_hello... defining Python class derived from Base... testing derived class from C++... success! running file script.py... Hello World ! success! intentionally causing a python exception... Traceback (most recent call last): File "<string>", line 1, in <module> NameError: name 'unknown' is not defined No errors detected. EXIT STATUS: 0 ====== END OUTPUT ====== **passed** bin/test_embed.test/darwin-4.0.1/debug/test_embed.test common.mkdir bin/test_ext.test common.mkdir bin/test_ext.test/darwin-4.0.1 common.mkdir bin/test_ext.test/darwin-4.0.1/debug darwin.compile.c++ bin/darwin-4.0.1/debug/extending.o darwin.link.dll bin/darwin-4.0.1/debug/extending.so *** *** End Screen dump 3 *** It hangs on the last line so I have to cancel it. I then ran: *** *** Start Screen dump 4 *** $ python2.7 test_extending.py Trying: from extending import * Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 6, in test_extending Failed example: from extending import * Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[0]>", line 1, in <module> from extending import * ImportError: No module named extending Trying: hi = hello('California') Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 7, in test_extending Failed example: hi = hello('California') Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[1]>", line 1, in <module> hi = hello('California') NameError: name 'hello' is not defined Trying: hi.greet() Expecting: 'Hello from California' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 8, in test_extending Failed example: hi.greet() Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[2]>", line 1, in <module> hi.greet() NameError: name 'hi' is not defined Trying: invite(hi) Expecting: 'Hello from California! Please come soon!' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 10, in test_extending Failed example: invite(hi) Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[3]>", line 1, in <module> invite(hi) NameError: name 'invite' is not defined Trying: hi.invite() Expecting: 'Hello from California! Please come soon!' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 12, in test_extending Failed example: hi.invite() Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[4]>", line 1, in <module> hi.invite() NameError: name 'hi' is not defined Trying: class wordy(hello): def greet(self): return hello.greet(self) + ', where the weather is fine' Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 15, in test_extending Failed example: class wordy(hello): def greet(self): return hello.greet(self) + ', where the weather is fine' Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[5]>", line 1, in <module> class wordy(hello): NameError: name 'hello' is not defined Trying: hi2 = wordy('Florida') Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 19, in test_extending Failed example: hi2 = wordy('Florida') Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[6]>", line 1, in <module> hi2 = wordy('Florida') NameError: name 'wordy' is not defined Trying: hi2.greet() Expecting: 'Hello from Florida, where the weather is fine' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 20, in test_extending Failed example: hi2.greet() Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[7]>", line 1, in <module> hi2.greet() NameError: name 'hi2' is not defined Trying: invite(hi2) Expecting: 'Hello from Florida! Please come soon!' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 22, in test_extending Failed example: invite(hi2) Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[8]>", line 1, in <module> invite(hi2) NameError: name 'invite' is not defined 1 items had no tests: test_extending.run ********************************************************************** 1 items had failures: 9 of 9 in test_extending 9 tests in 2 items. 0 passed and 9 failed. ***Test Failed*** 9 failures. *** *** End Screen dump 4 *** If I enter bin/darwin-4.0.1/debug, I get this for ls -al: mes-computer-444:debug me$ ls -al total 2688 drwxr-xr-x 6 me me 204 Mar 9 11:36 . drwxr-xr-x 3 me me 102 Mar 9 11:36 .. -rwxr-xr-x 1 barrygriffin me 164080 Mar 9 11:36 embedding -rw-r--r-- 1 me me 472992 Mar 9 11:36 embedding.o -rw-r--r-- 1 me me 530060 Mar 9 11:36 extending.o -rwxr-xr-x 1 me me 199076 Mar 9 11:36 extending.so Why am I hanging? I'd like to get python3 to work with boost but maybe its best to fix the hanging problem first. Thanks, Barry

1 0

conditionnal define
by Marc-Antoine ARNAUD 16 Mar '12

16 Mar '12

Hello, I'm using boost BJam to build my project with externals librairies. And I need to define variables if I found headers on the machine. How can we do that ? project : requirements <include>. <define>FLAG_NEEDED_TO_DEFINE => I need to define only if I found header. ; lib library : [ glob *.cpp ] ; Thanks, Marc-Antoine* *ARNAUD

2 2

Re: [Boost-users] Newbie Question - Errors if i want to compile
by Simone Piacco 16 Mar '12

16 Mar '12

Hi everybody. I solved my problem. It was a problem regarding -L directive. Using terminal and -ls command I arrived to the right path and all was working Thanks to all answered me. Simone

1 0

[MPL] Generating multi-index container indices based on MPL tag dispatching
by Peter Nyssen 16 Mar '12

16 Mar '12

Hi all, this is a follow-up of my question of yesterday (Fold a vector of pairs). The example here is a lot more elaborate and more like the final code I'd like to achieve. I still get errors when compiling the code below related the use of mpl::second<mpl::_2>. I'm trying to generate a multi-index container type that will store objects generated using inherit_linearly. The objects contain a number of attributes (all int in this example) based on a typelist of attribute tags. I want to generate this container by providing the object type and a index_list as shown here: http://www.boost.org/doc/libs/1_49_0/libs/multi_index/doc/tutorial/techniqu… I'm trying to compose the index_list using some kind of MPL tag dispatch based on the unique & non_unique tags to generate unique & non_unique ordered indices for the container. It's clear to me that the errors have to do with the MPL placeholder expressions used in the 3 types passed to the multi_index::member template class. This is confirmed because if I replace these 3 template parameters by the ones which are comment out just below the program compiles fine. From my previous question I get that the placeholder expressions need to be evaluated lazily (so no ::type or ::value - obviously the code below is thus incorrect). I've been reading section 3.3 of the MPL book on 'Handling Placeholders' a couple of times and from this it seems I need 3 metafunctions that call apply<> on the passed placeholder expressions and which would return each of the types to be passed to multi_index::member<>? I've been trying different approaches but none have been successful... I'm still not grasping how to handle these placeholder expressions... I hope the great minds on this list can bring some light in my clouded mind... Thanks & kind regards, Peter //------------------------------------------------- #include <boost/mpl/at.hpp> #include <boost/mpl/if.hpp> #include <boost/mpl/inherit.hpp> #include <boost/mpl/inherit_linearly.hpp> #include <boost/mpl/int.hpp> #include <boost/mpl/fold.hpp> #include <boost/mpl/pair.hpp> #include <boost/mpl/push_back.hpp> #include <boost/mpl/vector.hpp> #include <boost/multi_index_container.hpp> #include <boost/multi_index/indexed_by.hpp> #include <boost/multi_index/member.hpp> #include <boost/multi_index/ordered_index.hpp> namespace mpl = boost::mpl; namespace bmi = boost::multi_index; enum attributeTags { ATTR_1, ATTR_2, ATTR_3 }; template <int attrId> struct AttrTraits { typedef int type; }; template <typename AttrT> struct Attribute { typedef AttrTraits<AttrT::value> ATraits; typename ATraits::type value; }; template <typename AttrList> struct Object : public boost::mpl::inherit_linearly< AttrList, boost::mpl::inherit<boost::mpl::_1, Attribute<boost::mpl::_2> > >::type {}; struct unique {}; struct non_unique {}; template <typename T> struct is_unique : boost::false_type {}; template <> struct is_unique<unique> : boost::true_type {}; template<typename ObjectT, typename IndicesMap> struct ObjectContainer { typedef typename mpl::fold< IndicesMap, mpl::vector<>, mpl::if_< is_unique<mpl::first<mpl::_2> >, mpl::push_back< mpl::_1, bmi::ordered_unique< bmi::member< Attribute<boost::mpl::second<boost::mpl::_2> >, AttrTraits<boost::mpl::second<boost::mpl::_2>::value>::type, &Attribute<boost::mpl::second<boost::mpl::_2> >::value // Attribute<boost::mpl::int_<0> >, // int, // &Attribute<boost::mpl::int_<0> >::value > > >, mpl::push_back< mpl::_1, bmi::ordered_non_unique< bmi::member< Attribute<boost::mpl::second<boost::mpl::_2> >, AttrTraits<boost::mpl::second<boost::mpl::_2>::value>::type, &Attribute<boost::mpl::second<boost::mpl::_2> >::value // Attribute<boost::mpl::int_<1> >, // int, // &Attribute<boost::mpl::int_<1> >::value > > > > >::type IndexList; typedef boost::multi_index_container<ObjectT, IndexList> Container_t; Container_t Container; }; int main() { typedef boost::mpl::vector< boost::mpl::int_<ATTR_1>, boost::mpl::int_<ATTR_2>, boost::mpl::int_<ATTR_3> > AttributeList_1; typedef Object<AttributeList_1> Object_1; typedef mpl::vector< mpl::pair<unique, mpl::int_<ATTR_1> >, mpl::pair<non_unique, mpl::int_<ATTR_2> > > Object_1_Indicex; ObjectContainer<Object_1, Object_1_Indicex> Object1Container; return 0; } //-------------------------------------------------

2 2

[Range] and [MemberFunction]
by Robert Jones 16 Mar '12

16 Mar '12

In the documentation of Boost.MemberFunction it suggests that a useful purpose for it would be to implement overloads of std algorithms, and indeed other similar algorithms such that the final callable parameter could be a simple pointer to member. struct X { bool method( ); }; std::vector<X> xs; for_each( xs.begin( ), xs.end( ), & X::method ); or from Boost.Range boost::for_each( xs, &X::method ); Is such a facility implemented anywhere in Boost? Where I'm really going with this, is that I'd like to see versions of Boost.Range adaptors which support the same facility, so I can say, for example for_each( xs | filtered( & X::method ), doSomething ); rather than, as at present, for_each ( xs | filtered( bind( & X::method, _1 ) ), doSomething ); and similarly for transformed. Thanks, - Rob.

4 10

Newbie Question - Errors if i want to compile
by Simone Piacco 15 Mar '12

15 Mar '12

Hi everybody. I'm a new user of boost c++. I tried to install it on my Mac. I followed "Getting Started on Unix variant" guide which I found on boost.org site. The first part is ok, I tried to compile and execute the simple example and i had no problem, it runs. After it I tried to build and install the separately-compiled Boost libraries, I copied the example in my editor and I typed on terminal: c++ -I /Users/Simone/Documents/workspace/boost_1_49_0 main.cpp -o main\ ~/boost/stage/lib/libboost_regex-darwin-mt-d-1_49_0.a but the result was: Undefined symbols: "boost::re_detail::get_mem_block()", referenced from: boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::extend_stack()in ccmv1in1.o "boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >::maybe_assign(boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > > const&)", referenced from: boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::match_match()in ccmv1in1.o "boost::re_detail::get_default_error_string(boost::regex_constants::error_type)", referenced from: boost::re_detail::cpp_regex_traits_implementation<char>::error_string(boost::regex_constants::error_type) constin ccmv1in1.o boost::re_detail::cpp_regex_traits_implementation<char>::error_string(boost::regex_constants::error_type) constin ccmv1in1.o "boost::re_detail::put_mem_block(void*)", referenced from: boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::unwind_extra_block(bool)in ccmv1in1.o "boost::re_detail::raise_runtime_error(std::runtime_error const&)", referenced from: void boost::re_detail::raise_error<boost::regex_traits_wrapper<boost::regex_traits<char, boost::cpp_regex_traits<char> > > >(boost::regex_traits_wrapper<boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::error_type)in ccmv1in1.o "boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::match()", referenced from: bool boost::regex_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >(__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >&, boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match_flags)in ccmv1in1.o "boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::construct_init(boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match_flags)", referenced from: boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::perl_matcher(__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >&, boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match_flags, __gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >)in ccmv1in1.o "boost::re_detail::cpp_regex_traits_implementation<char>::transform_primary(char const*, char const*) const", referenced from: boost::cpp_regex_traits<char>::transform_primary(char const*, char const*) constin ccmv1in1.o "boost::re_detail::cpp_regex_traits_implementation<char>::transform(char const*, char const*) const", referenced from: boost::cpp_regex_traits<char>::transform(char const*, char const*) constin ccmv1in1.o "boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::do_assign(char const*, char const*, unsigned int)", referenced from: boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::assign(char const*, char const*, unsigned int)in ccmv1in1.o ld: symbol(s) not found collect2: ld returned 1 exit status Even if I used the other way to compile, ("separately specify a directory to search (with -Ldirectory)"), the result is always the same. What can I do?? Thank You Simone

3 2

Re: [Boost-users] Graph: writing graph properties to graphml file
by Juerg Tschirren 15 Mar '12

15 Mar '12

That did the trick! Thank you very much Jeremiah for all your help! Juerg On Thu, 15 Mar 2012, Jeremiah Willcock wrote: > On Thu, 15 Mar 2012, Juerg Tschirren wrote: > > Thanks Jeremiah for the prompt answer. Sorry, I forgot to mention, your > > suggested change to graphml.hpp was the first thing I tried yesterday. > > Everything compiles with your suggested change, but the result is a > > runtime error (boost::any_cast exception). As far as I can tell the > > problem origins in line 292 in graphml.hpp. But so far I wasn't able to > > wrap my mind around that dynamic_property_map and I couldn't quite > > figure out yet what is going on and what is supposed to be going on. > Please try the version of graphml.hpp that is in the trunk now using > Graph* as your key type. > -- Jeremiah Willcock

1 0

[heap] pending/mutable_queue.hpp vs heap/mutable_queue.hpp
by Philipp Moeller 15 Mar '12

15 Mar '12

Currently there are two mutable_queue implementations in Boost. One in pending (not really official) and another one in the newly released Heap library. Currently, some of our code currently using mutable_queue from pending. Has somebody already switched between both and found performance differences or can I expect them to perform nearly the same? Will mutable_queue in pending be removed since there is now an official library? Cheers, Philipp Moeller GeometryFactory

1 0

Re: [Boost-users] filesystem path constructor fails when passing in std::string (Visual studio project)
by Sillence, Martin (GE Oil & Gas) 15 Mar '12

15 Mar '12

> The simple code: > std::string str("d:\\New folder"); > bfs::path base(str); > Is causing an illegal memory access giving the following stack trace: > msvcp90d.dll!std::basic_string<char,std::char_traits<char>,std::_DebugHe apAllocator<char> >::assign(const std::basic_string<char,std::char_traits<char>,std::_DebugHeapAllocator<c har> > & _Right="*") Line 1052 C++ > msvcp90d.dll!std::basic_string<char,std::char_traits<char>,std::_DebugHe apAllocator<char> >::operator=(const std::basic_string<char,std::char_traits<char>,std::_DebugHeapAllocator<c har> > & _Right="*") Line 927 C++ OK I guess a bit too trigger happy with this post. I was retesting and release works but debug doesn't... I'm guessing this is due to the fact we have iterator optimisation for release and not for debug e.g. _HAS_ITERATOR_DEBUGGING=0 For some reason debug is linking or pulling in the release library of boost, now I know that I guess it's as good as solved. Sorry for the post, hope it proves useful to someone in future. Regards, M

1 0

Re: [Boost-users] Newbie Question - Errors if i want to compile
by Simone Piacco 15 Mar '12

15 Mar '12

I think my -I directive is right because I tried to compile the first simple example (which doesn't need the separately-compiled Boost libraries) and it was all ok. I also tried your solution but the result was the same... Undefined symbols: "boost::re_detail::get_mem_block()", referenced from:..... etc etc

1 0

Re: [Boost-users] Graph: writing graph properties to graphml file
by Juerg Tschirren 15 Mar '12

15 Mar '12

Thanks Jeremiah for the prompt answer. Sorry, I forgot to mention, your suggested change to graphml.hpp was the first thing I tried yesterday. Everything compiles with your suggested change, but the result is a runtime error (boost::any_cast exception). As far as I can tell the problem origins in line 292 in graphml.hpp. But so far I wasn't able to wrap my mind around that dynamic_property_map and I couldn't quite figure out yet what is going on and what is supposed to be going on. Juerg On Thu, 15 Mar 2012, Jeremiah Willcock wrote: > On Thu, 15 Mar 2012, Juerg Tschirren wrote: > > > > I still have a problem getting graph properties written to a graphml file (vertex and edge properties get written just fine). Following Jeremiah's advise form two weeks > > ago I implemented the code below. The problem appears to be that the instance of ref_property_map contained in the dynamic_properties uses the key type Graph*, but the > > write_graphml function implemented in boost/graph/graphml.hpp expects it to be of type Graph. This of course results in a different typeid and the write_graphml function > > does not recognize the entry in the dynamic properties as graph properties. I tried to change the key type of ref_property_map to Graph, which resulted in a compilation > > error. Any insight in how to solve that problem would be greatly appreciated! > I think (looking at the reading code in libs/graph/example/graphviz.cpp) > that it should be Graph* in write_graphml; try changing that (on lines > 265, 276, and 290 of boost/graph/graphml.hpp in the trunk) and see if it > works. > -- Jeremiah Willcock

2 1

filesystem path constructor fails when passing in std::string (Visual studio project)
by Sillence, Martin (GE Oil & Gas) 15 Mar '12

15 Mar '12

Hi, The simple code: std::string str("d:\\New folder"); bfs::path base(str); Is causing an illegal memory access giving the following stack trace: msvcp90d.dll!std::basic_string<char,std::char_traits<char>,std::_DebugHe apAllocator<char> >::assign(const std::basic_string<char,std::char_traits<char>,std::_DebugHeapAllocator<c har> > & _Right="*") Line 1052 C++ msvcp90d.dll!std::basic_string<char,std::char_traits<char>,std::_DebugHe apAllocator<char> >::operator=(const std::basic_string<char,std::char_traits<char>,std::_DebugHeapAllocator<c har> > & _Right="*") Line 927 C++ msvcp90d.dll!std::_DebugHeapString::operator=(const std::_DebugHeapString & __that={...}) + 0x15 bytes C++ app.exe!std::locale::locale<windows_file_codecvt>(const std::locale & _Loc={...}, const windows_file_codecvt * _Facptr=0x18972860) Line 316 + 0x27 bytes C++ app.exe!`anonymous namespace'::default_locale() Line 735 C++ app.exe!`anonymous namespace'::path_locale() Line 777 + 0x2a bytes C++ app.exe!boost::filesystem3::path::wchar_t_codecvt_facet() Line 797 + 0x25 bytes C++ app.exe!boost::filesystem3::path::codecvt() Line 389 + 0x5 bytes C++ app.exe!boost::filesystem3::path::path<std::basic_string<char,std::char_ traits<char>,std::allocator<char> > >(const std::basic_string<char,std::char_traits<char>,std::allocator<char> > & source="D:\New folder", void * __formal=0x00000000) Line 135 + 0x5 bytes C++ > app.exe!CDpiExport::configure() Line 188 + 0xe bytes C++ The project is set to use muti byte character support and this hasn't changed in a while I'm sure this was working before and I've reviewed the changes to the project file and I can't see anything that might have broken it. Any suggestions gratefully received. Thanks, M

1 0

Serializing UUIDs into text archives
by Matthias Vallentin 15 Mar '12

15 Mar '12

Serializing a UUID into a boost::archive::binary_[io]archive works fine. However, when changing to a text archive, I get a compiler error with gcc 4.7 in C++11 mode on Darwin. Here is a small example: #include <boost/archive/text_oarchive.hpp> #include <boost/iostreams/device/back_inserter.hpp> #include <boost/iostreams/filtering_stream.hpp> #include <boost/uuid/uuid_generators.hpp> #include <boost/uuid/uuid_serialize.hpp> int main() { std::vector<char> v; boost::iostreams::filtering_ostream stream(boost::iostreams::back_inserter(v)); boost::archive::text_oarchive oa(stream); boost::uuids::uuid id = boost::uuids::random_generator()(); oa << id; return 0; } The error is in basic_text_oprimitive line 92: cannot bind 'std::basic_ostream<char>' lvalue to 'std::basic_ostream<char>&&' Any ideas what's going on? (I attached the full error message below.) Matthias In file included from /opt/local/include/boost/archive/text_oarchive.hpp:30:0, from test.cc:2: /opt/local/include/boost/archive/basic_text_oprimitive.hpp: In instantiation of 'void boost::archive::basic_text_oprimitive<OStream>::save(const T&) [with T = boost::uuids::uuid; OStream = std::basic_ostream<char>]': /opt/local/include/boost/archive/text_oarchive.hpp:61:9: required from 'void boost::archive::text_oarchive_impl<Archive>::save(const T&) [with T = boost::uuids::uuid; Archive = boost::archive::text_oarchive]' /opt/local/include/boost/archive/detail/oserializer.hpp:88:9: required from 'static void boost::archive::save_access::save_primitive(Archive&, const T&) [with Archive = boost::archive::text_oarchive; T = boost::uuids::uuid]' /opt/local/include/boost/archive/detail/oserializer.hpp:232:13: required from 'static void boost::archive::detail::save_non_pointer_type<Archive>::save_primitive::invoke(Archive&, const T&) [with T = boost::uuids::uuid; Archive = boost::archive::text_oarchive]' /opt/local/include/boost/archive/detail/oserializer.hpp:308:9: required from 'static void boost::archive::detail::save_non_pointer_type<Archive>::invoke(Archive&, const T&) [with T = boost::uuids::uuid; Archive = boost::archive::text_oarchive]' /opt/local/include/boost/archive/detail/oserializer.hpp:314:9: required from 'static void boost::archive::detail::save_non_pointer_type<Archive>::invoke(Archive&, T&) [with T = boost::uuids::uuid; Archive = boost::archive::text_oarchive]' /opt/local/include/boost/archive/detail/oserializer.hpp:525:5: required from 'void boost::archive::save(Archive&, T&) [with Archive = boost::archive::text_oarchive; T = boost::uuids::uuid]' /opt/local/include/boost/archive/detail/common_oarchive.hpp:69:9: required from 'void boost::archive::detail::common_oarchive<Archive>::save_override(T&, int) [with T = boost::uuids::uuid; Archive = boost::archive::text_oarchive]' /opt/local/include/boost/archive/basic_text_oarchive.hpp:80:9: required from 'void boost::archive::basic_text_oarchive<Archive>::save_override(T&, int) [with T = boost::uuids::uuid; Archive = boost::archive::text_oarchive]' /opt/local/include/boost/archive/detail/interface_oarchive.hpp:63:9: required from 'Archive& boost::archive::detail::interface_oarchive<Archive>::operator<<(T&) [with T = boost::uuids::uuid; Archive = boost::archive::text_oarchive]' test.cc:15:11: required from here /opt/local/include/boost/archive/basic_text_oprimitive.hpp:92:9: error: cannot bind 'std::basic_ostream<char>' lvalue to 'std::basic_ostream<char>&&' In file included from /opt/local/include/boost/archive/text_oarchive.hpp:19:0, from test.cc:2: /opt/local/include/gcc47/c++/ostream:600:5: error: initializing argument 1 of 'std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&&, const _Tp&) [with _CharT = char; _Traits = std::char_traits<char>; _Tp = boost::uuids::uuid]'

2 6

Recommended mock framework to use with Boost?
by doug livesey 15 Mar '12

15 Mar '12

Hi -- I'm trying to learn to develop properly with C++ and Boost, and to that end am learning along with Boost.Test, as I'm a BDD coder in another language (Ruby) in my day job. I'm at the point, now, where my tests could really benefit from a mocking framework. There doesn't appear to be one in Boost (not documented, at least), so I wondered if anyone on the list could recommend a mocking framework that they use that works well with Boost.Test? Any and all advice gratefully received, Doug.

9 16

Re: [Boost-users] Graph: writing graph properties to graphml file
by Juerg Tschirren 15 Mar '12

15 Mar '12

I still have a problem getting graph properties written to a graphml file (vertex and edge properties get written just fine). Following Jeremiah's advise form two weeks ago I implemented the code below. The problem appears to be that the instance of ref_property_map contained in the dynamic_properties uses the key type Graph*, but the write_graphml function implemented in boost/graph/graphml.hpp expects it to be of type Graph. This of course results in a different typeid and the write_graphml function does not recognize the entry in the dynamic properties as graph properties. I tried to change the key type of ref_property_map to Graph, which resulted in a compilation error. Any insight in how to solve that problem would be greatly appreciated! Here is my current code: #include <boost/graph/graph_traits.hpp> #include <boost/graph/adjacency_list.hpp> #include <boost/graph/graphml.hpp> struct VertexProperties { std::string strName; }; struct EdgeProperties { std::string strName; }; struct GraphProperties { std::string strName; }; std::ostream& operator<< (std::ostream& strm, const VertexProperties& p) { strm << p.strName; return strm; } std::istream& operator>> (std::istream& strm, VertexProperties& p) { strm >> p.strName; return strm; } std::ostream& operator<< (std::ostream& strm, const EdgeProperties& p) { strm << p.strName; return strm; } std::istream& operator>> (std::istream& strm, EdgeProperties& p) { strm >> p.strName; return strm; } std::ostream& operator<< (std::ostream& strm, const GraphProperties& p) { strm << p.strName; return strm; } std::istream& operator>> (std::istream& strm, GraphProperties& p) { strm >> p.strName; return strm; } typedef boost::property<boost::vertex_name_t, VertexProperties> vertex_p; typedef boost::property<boost::edge_weight_t, EdgeProperties> edge_p; typedef boost::property<boost::graph_name_t, GraphProperties> graph_p; typedef boost::adjacency_list<boost::listS, boost::vecS, boost::directedS, vertex_p, edge_p, graph_p> Graph; typedef boost::graph_traits<Graph>::vertex_descriptor vertex_t; typedef boost::graph_traits<Graph>::edge_descriptor edge_t; typedef boost::property_map<Graph, boost::vertex_name_t>::type vertex_prop_t; typedef boost::property_map<Graph, boost::edge_weight_t>::type edge_prop_t; typedef boost::ref_property_map<Graph*, GraphProperties> graph_propt_t; int main() { //-- create a graph: Graph g; vertex_t u = boost::add_vertex(g); vertex_t v = boost::add_vertex(g); edge_t e; bool b; boost::tie(e,b) = boost::add_edge(u,v,g); //-- get the property maps: vertex_prop_t vertexPropMap = boost::get(boost::vertex_name, g); edge_prop_t edgePropMap = get(boost::edge_weight, g); GraphProperties& graphProp = boost::get_property(g, boost::graph_name); //-- set some vertex, edge, and graph properties: vertexPropMap[u].strName = "first vertex"; vertexPropMap[v].strName = "second vertex"; edgePropMap[e].strName = "an edge"; graphProp.strName = "the graph"; //-- create dynamic property map: boost::dynamic_properties dp(boost::ignore_other_properties); dp.property("vertex_properties", vertexPropMap); dp.property("edge_properties", edgePropMap); graph_propt_t graphPropMap(graphProp); dp.property("graph_properties", graphPropMap); //-- write graphml to file: std::ofstream graphmlOutFile("graph.xml"); boost::write_graphml(graphmlOutFile, g, dp, true); graphmlOutFile.close(); return 0; } On Thu, 1 Mar 2012, Jeremiah Willcock wrote: > On Tue, 28 Feb 2012, Juerg Tschirren wrote: > > I wrote the code below to construct a directed graph with internal properties (for vertices, edges, and the graph itself) and write everything to a graphml file. The code > > compiles and works as it is, but my two questions are: > > > > 1. What dynamic property do I have to add to write the graph properties out to the graphml file as well? So far I could only figure out how to write vertex and edge > > properties. > You should be able to add a graph property like in the following code > (from libs/graph/test/graphviz_test.cpp): > boost::ref_property_map<graph_t*,std::string> gname( > get_property(graph,graph_name)); > dp.property("name",gname); > > 2. Does everything else look good? Specifically, is it O.K. to define the properties the way I did in the first typedef line (without using boost::property<>), and is it > > O.K. to access the properties the way I do it? > It will work, but a better way would be to use boost::property or a class > containing your string which you can then access using g[v].mem or > g[e].mem. >-- Jeremiah Willcock

2 1

[boost::asio::serial_port] Calling cancel() causes Run-Time Check Failure #0 on Visual Studio 2010 SP1
by Dario Ramos 15 Mar '12

15 Mar '12

This is a fatal error, there's no way to recover from it, and in release builds, a nasty message box appears. It happens when I call serial_port::cancel and Boost tries to throw some exception. The exact error is: Run-Time Check Failure #0 - The value of ESP was not properly saved across a function call. This is usually a result of calling a function declared with one calling convention with a function pointer declared with a different calling convention. And it seems to happen in throw_error.ipp, inside the do_throw_error method. Here's a small sample program which reproduces this: #include <boost/asio/serial_port.hpp> #include <boost/asio/read.hpp> #include <boost/thread.hpp> #include <iostream> using namespace std; BYTE g_pBuffer[128]; void ReadCompletionHandler( boost::system::error_code ec, std::size_t bytesTransferred ){ if( !ec ){ cout << "Read " << bytesTransferred << " bytes successfully" << endl; }else if( ec == boost::asio::error::operation_aborted ){ cout << "Aborted async_read_some, " << bytesTransferred << " bytes transferred" << endl; }else{ cout << "Read finished with errors: " << ec.message() << endl; } } void ReaderThread( boost::asio::serial_port* pSerialPort ){ cout << "[ReaderThread] Started reading" << endl; boost::asio::async_read( *pSerialPort, boost::asio::buffer( g_pBuffer, 5 ), ReadCompletionHandler ); cout << "[ReaderThread] Done!" << endl; } void main(){ //Tell cout not to buffer its output so output better reflects multithreaded execution std::cout.setf(std::ios::unitbuf); boost::asio::io_service ioService; boost::asio::serial_port serialPort( ioService ); string portName = "COM1"; serialPort.open( portName ); if( !serialPort.is_open() ){ cout << "Failed to open " << portName << endl; return; } cout << "Launching reader thread and io_service" << endl; boost::thread readerThread( boost::bind( ReaderThread, &serialPort ) ); ioService.run(); cout << "Sleeping..." << endl; ::Sleep( 5000 ); cout << "Woke up, cancelling pending reads" << endl; serialPort.cancel(); cout << "Waiting for reader thread to finish..." << endl; readerThread.join(); cout << "Done!" << endl; cin.get(); } Maybe I'm doing something stupid. What do you think? -- *Darío Eduardo Ramos* Meditech S.A. www.meditech.com.ar (+54) 01147603300, Interno 31 Av. Julio A. Roca 3456 Florida Oeste, Bs.As. Argentina

3 4

GSoC 2012
by Devashish Tyagi 15 Mar '12

15 Mar '12

Hello, I am Devashish Tyagi, an Undergraduate Student of Computer Science and Engineering at Indian Institute of Technology, Delhi. I am currently in my Third Year. I have a considerable experience of coding in C++ and strong background in the field of Algorithms. I would like to be part of Boost C++ Library for GSoC 2012. I went through the Ideas page here<https://svn.boost.org/trac/boost/wiki/SoC2012>. I would like to extend Boost.Graph by implementing the requests mentioned on this page<http://www.boost.org/doc/libs/1_49_0/libs/graph/doc/challenge.html>. Among the Challenges mentioned, I am particularly interested in implementing Dynamic Graph Algorithms and a minimum cost maximum flow Algorithm. Could someone guide me as to from where should I begin my research and Is there a priority order among the requests/challanges mentioned on this page<http://www.boost.org/doc/libs/1_49_0/libs/graph/doc/challenge.html>. Regards -- Devashish Tyagi Junior Undergraduate Computer Science and Engineering Dept.

2 1

Boost Asio - VxWorks
by Julien PONNOU 15 Mar '12

15 Mar '12

Hello, I'm trying to compile Boost Asio under VxWorks OS, with GNU compiler, without any success. Right now, I've setted up a new project with Workbench 3.3, and included the <boost/asio.hpp> library. As a result, I got a tone of errors because many files it is including doesn't exist. Actually, it is trying to include Linux's files such as /sys/poll.h and /sys/uio.h. These files don't exist in VxWorks. Does somebody already compiled it under VxWorks ? Best regards, Julien.

2 3

iterator_adaptor usage question
by John M. Dlugosz 15 Mar '12

15 Mar '12

What is a good way to create both an iterator and a const iterator while only having to specify all my custom behavior once?

4 3

[MPL]...if_ and enable_if
by Robert Jones 15 Mar '12

15 Mar '12

I'm having a bit of punt into the murky world of metaprogramming, so this might be a bit naive...! I've been using Boost.enable_if for a while, and now I've just encountered Boost.MPL.if_ and wonder if enable_if is simply a special case of MPL.if_. Given struct empty { }; template <typename T> struct my_condition : /* boost true_ or false_ */; is template <typename T> typename enable_if<my_condition<T>, int>::type f( ) { /* .... */ } the same as template <typename T> typename eval_if<my_condition<T>, identity<int>, empty>::type f( ) { /* ... */ } Or is there some subtlety I'm missing (which is quite likely!) Thx - Rob.

3 2

[Graph] On Dijkstra SSSP performance
by Leo Hidd 15 Mar '12

15 Mar '12

Hello guys, I'm newbie on Boost, but thanks to some examples I found over the net I could make it work. Now I have a question on the performance of the dijkstra_shortest_paths function. The kind of graph I have is actually a 3D surface mesh, with each vertex being a node and each edge being an edge of the graph. So my graph is undirected, the number of edges is approximately 3 times the number of vertices (I typically have around 4 millions of vertices), the degree of the vertices is not constant, it varies between 3 and 12 (but 90% of the vertices have 5 or 6 neighbors) and the weight of the edges are the (3D Euclidean) distances between the adjacent vertices. As for the Boost lib, so far I'm using the classic adjacency_list<listS, vecS, undirectedS, no_property, < boost::edge_weight_t, Scalar > > graph_t type, with the dijkstra_shortest_paths function. But I feel the performance is very low compared to my implementation of Dijkstra algorithm. Dijkstra algorithm is very simple, so my implementation is a simple transcription of the text book in C language (I'm using Microsoft Visual Studio 2008). The data structure I'm using is a classic binary tree typedef struct tree_el { int idx; int source_idx; double dist; tree_el * right, * left; } node; and the functions I've implemented are insert (inserts a node with the smallest dist as the left most element or, in case of equality, it put the node with smallest idx as the left most element), remove_smallest (return the left most node and delete it from the tree) and remove_node (finds and return a given node and delete it from tree). The remove_node I use combined with insert whenever a given node has it's dist updated (in case new dist is smallest than the current one), so I remove the node, create a new one with the new dist (but same idx) and insert it into the tree (so that it will be always sorted). Well, since this is a real simple scholar case and that the performance is around 4 times faster than the dijkstra_shortest_paths function, which I call like this: std::vector<vertex_descriptor> p(num_vertices(g)); std::vector<Scalar> d(num_vertices(g)); vertex_descriptor s = vertex(A, g); dijkstra_shortest_paths (g, s, predecessor_map(make_iterator_property_map(p.begin(), get(vertex_index, g))). distance_map(make_iterator_property_map(d.begin(), get(vertex_index, g)))); I'm here to ask you how to make a better use of Boost in order to have performance at least in pair with what I have so far. I'm not concerned by the build time of the graph (add nodes/edges) since I do it only once and it remains the same all over my runtime. I'm only concerned by the SSSP itself, which I call thousands of times with different sources (I actually do multi source shortest path search) (all pairs is not a solution to me since I use way less sources than the total of nodes I have, and, for a graph with as much nodes as I have, I can't hold in memory all these distances). It seems to massively use STL containers (like vectors and lists) which maybe be the reason why it runs slower, but I'm not sure. Is there a way to use other graph type so that it can run faster? Thank you for your attention, leo

3 2

Re: [Boost-users] C++ committee calling for lib proposals
by Brian Wood 15 Mar '12

15 Mar '12

> The C++ committee is calling for library proposals for their inclusion in C++11: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3370.html . > I think some of the boost libraries are good candidates, like the recently accepted boost::lockfree. Has anyone considered sending such proposal? I'm not sure how the committee feels about open code generation -- http://web.it.kth.se/~cschulte/projects/unison.php -- but I think moving in that direction could help revive library development. Regards, Brian Wood Ebenezer Enterprises http://webEbenezer.net "In a sort of *ghastly* *simplicity* we remove the organ and demand the function. ... We castrate and bid the geldings be *fruitful*." -- C.S. Lewis

2 1

Problems using boost serializing and custom constructors
by Allan Nielsen 14 Mar '12

14 Mar '12

Hi I'm trying to use boost::serialize for the first time, but I have some troubles figuring out how to serialize a class like this: #include <vector> struct Foo { struct Bar { std::vector<int> * data; // Must point to Foo::data Bar( std::vector<int> * d ) : data(d) { } }; std::vector<int> data; std::vector<Bar> elements; Foo() { // do very time consuming calculation to populate "data" and "elements" } }; Here is what I have tried: struct Foo { struct Bar { std::vector<int> * data; Bar( ) : data( 0 ) { } Bar( std::vector<int> * d ) : data(d) { } template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & data; // is this correct? } }; std::vector<int> data; std::vector<Bar> elements; Foo() { std::cerr << "Running default constructor" << std::endl; data.push_back(1); data.push_back(2); data.push_back(3); data.push_back(4); data.push_back(5); elements.push_back( Bar( &data ) ); elements.push_back( Bar( &data ) ); elements.push_back( Bar( &data ) ); } template<class Archive> Foo( Archive & ar ) { ar >> data; // is this corrent? ar >> elements; } private: BOOST_SERIALIZATION_SPLIT_MEMBER(); friend class boost::serialization::access; template<class Archive> void save(Archive & ar, const unsigned int version) const { const std::vector<int> * data_ptr = &data; // should data be seriliazed as pointer... // it is used as a pointer in Bar ar << data_ptr; ar << elements; } }; int main(int argc, const char *argv[]) { #if 0 // serialize Foo foo; boost::archive::text_oarchive oar(std::cout); oar << foo; #else // deserialize boost::archive::text_iarchive oar(std::cin); Foo foo(oar); #endif std::cerr << foo.data.size() << std::endl; std::cerr << foo.elements.size() << std::endl; std::cerr << (&foo.data) << std::endl; for( const auto& a : foo.data ) std::cerr << a << " "; std::cerr << std::endl; for( const auto& a : foo.elements) std::cerr << a.data << " "; std::cerr << std::endl; return 0; } The only problem is that it does not work. After I deserialize Foo, data is still empty. Please advise me on how to do this properly. Best regards Allan W. Nieslen

3 12

Przemyslaw SLIWA is out of the office.
by przemyslaw.sliwa＠uk.bnpparibas.com 14 Mar '12

14 Mar '12

I will be out of the office starting 14/03/2012 and will not return until 26/03/2012. I will respond to your message when I return. ___________________________________________________________ This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and delete this e-mail. Any unauthorised copying, disclosure or distribution of the material in this e-mail is prohibited. Please refer to http://www.bnpparibas.co.uk/en/information/legal_information.asp?Code=ECAS-… for additional disclosures. BNP Paribas is proud to sponsor David Hockney RA: A Bigger Picture at the Royal Academy, 21 January - 9 April 2012

1 0

[MPL] Fold a vector of pairs
by Peter Nyssen 14 Mar '12

14 Mar '12

Thanks for replying Jeff. I did try without the ::type's as shown below, but this fails to compile as well. Kind regards, Peter //------------------------------------- #include <boost/mpl/if.hpp> #include <boost/mpl/int.hpp> #include <boost/mpl/fold.hpp> #include <boost/mpl/pair.hpp> #include <boost/mpl/push_back.hpp> #include <boost/mpl/vector.hpp> namespace mpl = boost::mpl; struct tag1 {}; struct tag2 {}; template <typename T> struct is_tag1 : boost::false_type {}; template <> struct is_tag1<tag1> : boost::true_type {}; int main() { typedef mpl::vector< mpl::pair<tag1, mpl::int_<1> >, mpl::pair<tag2, mpl::int_<2> >, mpl::pair<tag1, mpl::int_<3> > > initial_vector; typedef typename mpl::fold< initial_vector, mpl::pair<mpl::vector<>, mpl::vector<> >, mpl::if_< is_tag1<mpl::first<mpl::_2> >, mpl::push_back< mpl::first<mpl::_1>, mpl::second<mpl::_2> >, mpl::push_back< mpl::second<mpl::_1>, mpl::second<mpl::_2> > > >::type sorted_pair; return 0; } //------------------------------------- $ g++4 -Wall -I ../boost/ -o test test.cpp test.cpp: In function 'int main()': test.cpp:28: error: using 'typename' outside of template ../boost/boost/mpl/pair.hpp: At global scope: ../boost/boost/mpl/pair.hpp: In instantiation of 'boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >': ../boost/boost/mpl/aux_/has_type.hpp:20: instantiated from 'const bool boost::mpl::aux::has_type<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::bool_<true> >::value' ../boost/boost/mpl/aux_/has_type.hpp:20: instantiated from 'boost::mpl::aux::has_type<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::bool_<true> >' ../boost/boost/mpl/aux_/preprocessed/gcc/quote.hpp:39: instantiated from 'boost::mpl::quote1<boost::mpl::second, mpl_::void_>::apply<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:39: instantiated from 'boost::mpl::apply_wrap1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:144: instantiated from 'boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >::apply<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:80: instantiated from 'boost::mpl::apply_wrap5<boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:160: instantiated from 'boost::mpl::aux::resolve_bind_arg<boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:207: instantiated from 'boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >::apply<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:80: instantiated from 'boost::mpl::apply_wrap5<boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:223: instantiated from 'boost::mpl::aux::resolve_bind_arg<boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:508: instantiated from 'boost::mpl::bind3<boost::mpl::quote3<boost::mpl::if_, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<is_tag1, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > > >::apply<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:49: instantiated from 'boost::mpl::apply_wrap2<boost::mpl::protect<boost::mpl::bind3<boost::mpl::quote3<boost::mpl::if_, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<is_tag1, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > > >, 0>, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/apply.hpp:73: instantiated from 'boost::mpl::apply2<boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > >, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/fold_impl.hpp:89: instantiated from 'boost::mpl::aux::fold_impl<3, boost::mpl::v_iter<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0l>, boost::mpl::v_iter<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 3l>, boost::mpl::pair<boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > > >' ../boost/boost/mpl/fold.hpp:39: instantiated from 'boost::mpl::fold<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::pair<boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > > >' test.cpp:42: instantiated from here ../boost/boost/mpl/pair.hpp:56: error: no type named 'second' in 'struct boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>' ../boost/boost/mpl/push_back.hpp: In instantiation of 'boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >': ../boost/boost/mpl/aux_/has_type.hpp:20: instantiated from 'const bool boost::mpl::aux::has_type<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, mpl_::bool_<true> >::value' ../boost/boost/mpl/aux_/has_type.hpp:20: instantiated from 'boost::mpl::aux::has_type<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, mpl_::bool_<true> >' ../boost/boost/mpl/aux_/preprocessed/gcc/quote.hpp:56: instantiated from 'boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>::apply<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:49: instantiated from 'boost::mpl::apply_wrap2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:207: instantiated from 'boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >::apply<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:80: instantiated from 'boost::mpl::apply_wrap5<boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:223: instantiated from 'boost::mpl::aux::resolve_bind_arg<boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:508: instantiated from 'boost::mpl::bind3<boost::mpl::quote3<boost::mpl::if_, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<is_tag1, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > > >::apply<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:49: instantiated from 'boost::mpl::apply_wrap2<boost::mpl::protect<boost::mpl::bind3<boost::mpl::quote3<boost::mpl::if_, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<is_tag1, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > > >, 0>, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/apply.hpp:73: instantiated from 'boost::mpl::apply2<boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > >, boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0>, boost::mpl::pair<tag2, mpl_::int_<2> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/fold_impl.hpp:89: instantiated from 'boost::mpl::aux::fold_impl<3, boost::mpl::v_iter<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0l>, boost::mpl::v_iter<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 3l>, boost::mpl::pair<boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > > >' ../boost/boost/mpl/fold.hpp:39: instantiated from 'boost::mpl::fold<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::pair<boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > > >' test.cpp:42: instantiated from here ../boost/boost/mpl/push_back.hpp:32: error: no class template named 'apply' in 'struct boost::mpl::push_back_impl<boost::mpl::non_sequence_tag>' ../boost/boost/mpl/pair.hpp: In instantiation of 'boost::mpl::first<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >': ../boost/boost/mpl/aux_/has_type.hpp:20: instantiated from 'const bool boost::mpl::aux::has_type<boost::mpl::first<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >, mpl_::bool_<true> >::value' ../boost/boost/mpl/aux_/has_type.hpp:20: instantiated from 'boost::mpl::aux::has_type<boost::mpl::first<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >, mpl_::bool_<true> >' ../boost/boost/mpl/aux_/preprocessed/gcc/quote.hpp:39: instantiated from 'boost::mpl::quote1<boost::mpl::first, mpl_::void_>::apply<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:39: instantiated from 'boost::mpl::apply_wrap1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:144: instantiated from 'boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >::apply<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:80: instantiated from 'boost::mpl::apply_wrap5<boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:160: instantiated from 'boost::mpl::aux::resolve_bind_arg<boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:207: instantiated from 'boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >::apply<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:80: instantiated from 'boost::mpl::apply_wrap5<boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:223: instantiated from 'boost::mpl::aux::resolve_bind_arg<boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:508: instantiated from 'boost::mpl::bind3<boost::mpl::quote3<boost::mpl::if_, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<is_tag1, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > > >::apply<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:49: instantiated from 'boost::mpl::apply_wrap2<boost::mpl::protect<boost::mpl::bind3<boost::mpl::quote3<boost::mpl::if_, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<is_tag1, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > > >, 0>, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/apply.hpp:73: instantiated from 'boost::mpl::apply2<boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > >, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/fold_impl.hpp:91: instantiated from 'boost::mpl::aux::fold_impl<3, boost::mpl::v_iter<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0l>, boost::mpl::v_iter<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 3l>, boost::mpl::pair<boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > > >' ../boost/boost/mpl/fold.hpp:39: instantiated from 'boost::mpl::fold<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::pair<boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > > >' test.cpp:42: instantiated from here ../boost/boost/mpl/pair.hpp:43: error: no type named 'first' in 'struct boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >' ../boost/boost/mpl/push_back.hpp: In instantiation of 'boost::mpl::push_back<boost::mpl::first<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >, mpl_::int_<3> >': ../boost/boost/mpl/aux_/has_type.hpp:20: instantiated from 'const bool boost::mpl::aux::has_type<boost::mpl::push_back<boost::mpl::first<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >, mpl_::int_<3> >, mpl_::bool_<true> >::value' ../boost/boost/mpl/aux_/has_type.hpp:20: instantiated from 'boost::mpl::aux::has_type<boost::mpl::push_back<boost::mpl::first<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >, mpl_::int_<3> >, mpl_::bool_<true> >' ../boost/boost/mpl/aux_/preprocessed/gcc/quote.hpp:56: instantiated from 'boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>::apply<boost::mpl::first<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >, mpl_::int_<3> >' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:49: instantiated from 'boost::mpl::apply_wrap2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::first<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> > >, mpl_::int_<3> >' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:207: instantiated from 'boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >::apply<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:80: instantiated from 'boost::mpl::apply_wrap5<boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:223: instantiated from 'boost::mpl::aux::resolve_bind_arg<boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/bind.hpp:508: instantiated from 'boost::mpl::bind3<boost::mpl::quote3<boost::mpl::if_, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<is_tag1, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > > >::apply<boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na>' ../boost/boost/mpl/aux_/preprocessed/gcc/apply_wrap.hpp:49: instantiated from 'boost::mpl::apply_wrap2<boost::mpl::protect<boost::mpl::bind3<boost::mpl::quote3<boost::mpl::if_, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<is_tag1, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::first, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > >, boost::mpl::bind2<boost::mpl::quote2<boost::mpl::push_back, mpl_::void_>, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<1> >, boost::mpl::bind1<boost::mpl::quote1<boost::mpl::second, mpl_::void_>, mpl_::arg<2> > > >, 0>, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/apply.hpp:73: instantiated from 'boost::mpl::apply2<boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > >, boost::mpl::push_back<boost::mpl::second<boost::mpl::v_item<mpl_::int_<1>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0> >, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> > >' ../boost/boost/mpl/aux_/preprocessed/gcc/fold_impl.hpp:91: instantiated from 'boost::mpl::aux::fold_impl<3, boost::mpl::v_iter<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 0l>, boost::mpl::v_iter<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, 3l>, boost::mpl::pair<boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > > >' ../boost/boost/mpl/fold.hpp:39: instantiated from 'boost::mpl::fold<boost::mpl::vector<boost::mpl::pair<tag1, mpl_::int_<1> >, boost::mpl::pair<tag2, mpl_::int_<2> >, boost::mpl::pair<tag1, mpl_::int_<3> >, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::pair<boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::mpl::vector<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, boost::mpl::if_<is_tag1<boost::mpl::first<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::first<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > >, boost::mpl::push_back<boost::mpl::second<mpl_::arg<1> >, boost::mpl::second<mpl_::arg<2> > > > >' test.cpp:42: instantiated from here ../boost/boost/mpl/push_back.hpp:32: error: no class template named 'apply' in 'struct boost::mpl::push_back_impl<boost::mpl::non_sequence_tag>'

2 1

Sunstudio 12.1 Patch
by Arno 14 Mar '12

14 Mar '12

Hi all, I have had a problem with Boost 1.42 on Solaris 10 an SunStudio 12 and found out, that there was a relation to a bug #3886. I do the required patch what I found there and the compilation worked afterwards. My question: Because we use this boost version for different platforms, how can I notice, if this patch is only for this platform or also for others. At least we use our configuration management for this issue and I have to now, if I can checkin this patch for all or only for some or at least only for this special platform. Can somebody give me an answer to that? regards Arno

1 0

[MPL] Fold a vector of pairs
by Peter Nyssen 14 Mar '12

14 Mar '12

Nevermind. Removing the typename before mpl::fold fixes it. Kind regards, Peter //------------------------------------- #include <boost/mpl/if.hpp> #include <boost/mpl/int.hpp> #include <boost/mpl/fold.hpp> #include <boost/mpl/pair.hpp> #include <boost/mpl/push_back.hpp> #include <boost/mpl/vector.hpp> namespace mpl = boost::mpl; struct tag1 {}; struct tag2 {}; template <typename T> struct is_tag1 : boost::false_type {}; template <> struct is_tag1<tag1> : boost::true_type {}; int main() { typedef mpl::vector< mpl::pair<tag1, mpl::int_<1> >, mpl::pair<tag2, mpl::int_<2> >, mpl::pair<tag1, mpl::int_<3> > > initial_vector; typedef mpl::fold< initial_vector, mpl::pair<mpl::vector<>, mpl::vector<> >, mpl::if_< is_tag1<mpl::first<mpl::_2> >, mpl::push_back< mpl::first<mpl::_1>, mpl::second<mpl::_2> >, mpl::push_back< mpl::second<mpl::_1>, mpl::second<mpl::_2> > > >::type sorted_pair; return 0; }

1 0

[property_tree] if "ostream << string_path" missing ?
by Alain O Miniussi 14 Mar '12

14 Mar '12

Hi, I cannot find a direct way to output a string_path on an ostream. Is the feature simply missing or considered useless, and in this case, what is the rationale ? Thanks Alain

2 1

build error using sharable_lock with -02 optimization
by Magallo 14 Mar '12

14 Mar '12

I'm trying to use the Boost.Interprocess library, mutexes, scoped_lock, sharable_lock etc... If I use a simple test program that uses mutex like this, I have no problem: void test1() { printf("test1 - timed_lock \n"); printf("trying to get exlusive lock within a timeout of 5 seconds\n"); boost::interprocess::named_mutex mutex(boost::interprocess::open_or_create, "MyExlusiveTimedMutex"); boost::posix_time::ptime abs_time = boost::posix_time::second_clock::universal_time() + boost::posix_time::seconds(5); if( mutex.timed_lock(abs_time) ) { printf("mutex acquired! do some processing...\n"); //...do some processing... printf("unlocking mutex, quit.\n"); mutex.unlock(); } else { printf("mutex not acquired, quit.\n"); } printf("end of test1\n"); } This test is ok, it builds with no problem. Then I try to use the scoped_lock functionalities: void test2() { //open or create the named mutex printf("creating mutex...\n"); boost::interprocess::named_mutex n_mutex(boost::interprocess::open_or_create, "ipc_pri_queue_mutex"); { printf("acquiring mutex scoped_lock...\n"); boost::interprocess::scoped_lock<boost::interprocess::named_mutex> sc_lock(n_mutex); printf("mutex scoped_lock acquired...\n"); //wait some time to simulate execution printf("execute program...\n"); sleep(10); printf("program excuted...\n"); } printf("out of scope, sharable_lock released\n"); } Also this test is ok, it builds with no problem. Finally, I try to use the sharable_lock and I get the error: void test3() { //open or create the named upgradable mutex printf("creating mutex...\n"); boost::interprocess::named_upgradable_mutex n_u_mutex(boost::interprocess::open_or_create, "ipc_pri_queue_upgradable_mutex"); { printf("acquiring mutex sharable_lock...\n"); boost::interprocess::sharable_lock<boost::interprocess::named_upgradable_mutex> sh_lock(n_u_mutex); printf("mutex sharable_lock acquired...\n"); //wait some time to simulate execution printf("execute program...\n"); sleep(10); printf("program excuted...\n"); } printf("out of scope, sharable_lock released\n"); } If I build this with -O2 optimization flag, I get this error: g++ -O2 -I /usr/local/boost_1_49_0 -c main.cpp -o main.o /usr/local/boost_1_49_0/boost/interprocess/detail/atomic.hpp: In member function 'void boost::interprocess::ipcdetail::managed_open_or_create_impl<DeviceAbstraction, MemAlignment, FileBased, StoreDevice>::priv_open_or_create(boost::interprocess::ipcdetail::create_enum_t, const typename boost::interprocess::managed_open_or_create_impl_device_id_t<DeviceAbstraction>::type&, size_t, boost::interprocess::mode_t, const void*, const boost::interprocess::permissions&, ConstructFunc) [with ConstructFunc = boost::interprocess::ipcdetail::named_creation_functor<boost::interprocess::interprocess_upgradable_mutex, boost::interprocess::ipcdetail::named_creation_functor_no_arg>, DeviceAbstraction = boost::interprocess::shared_memory_object, unsigned int MemAlignment = 0u, bool FileBased = true, bool StoreDevice = true]': /usr/local/boost_1_49_0/boost/interprocess/detail/atomic.hpp:316: internal compiler error: in rewrite_stmt, at tree-into-ssa.c:1380 Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://forum.java.sun.com/forum.jspa?forumID=905> for instructions. *** Error code 1 make: Fatal error: Command failed for target `main.o' If I build this without the -O2 flag, the build is ok. Why this? Please help. I did this test on: OS: Solaris 10 5/09 s10s_u7wos_08 SPARC Compiler: sparc-sun-solaris2.10-g++ (GCC) 4.2.1 (20090222) (gccfss)

1 0

[MPL] Fold a vector of pairs
by Peter Nyssen 14 Mar '12

14 Mar '12

Hi all, I'm trying to understand how to use mpl::fold to transform a vector like this: vector< pair<tag1, A> pair<tag2, B> pair<tag1, C> > into the following: pair< vector<A,C> vector<B> > Following test program fails to compile and I don't understand why. If you could explain me what I'm missing here, you will gain my eternal respect. Kind regards, Peter //-------------------------------------------- #include <boost/mpl/if.hpp> #include <boost/mpl/int.hpp> #include <boost/mpl/fold.hpp> #include <boost/mpl/pair.hpp> #include <boost/mpl/push_back.hpp> #include <boost/mpl/vector.hpp> namespace mpl = boost::mpl; struct tag1 {}; struct tag2 {}; template <typename T> struct is_tag1 : boost::false_type {}; template <> struct is_tag1<tag1> : boost::true_type {}; int main() { typedef mpl::vector< mpl::pair<tag1, mpl::int_<1> >, mpl::pair<tag2, mpl::int_<2> >, mpl::pair<tag1, mpl::int_<3> > > initial_vector; typedef typename mpl::fold< initial_vector, mpl::pair<mpl::vector<>, mpl::vector<> >, mpl::if_< is_tag1<mpl::first<mpl::_2>::type >, mpl::push_back< mpl::first<mpl::_1>::type, mpl::second<mpl::_2>::type >, mpl::push_back< mpl::second<mpl::_1>::type, mpl::second<mpl::_2>::type > > >::type sorted_pair; return 0; } //-------------------------------------------- *$* g++ -Wall -I ../boost/ -o test test.cpp In file included from test.cpp:5:0: ../boost/boost/mpl/pair.hpp: In instantiation of 'boost::mpl::first<mpl_::arg<2> >': test.cpp:32:40: instantiated from here ../boost/boost/mpl/pair.hpp:43:31: fout: no type named 'first' in 'struct mpl_::arg<2>' test.cpp: In functie 'int main()': test.cpp:32:47: fout: template argument 1 is invalid In file included from test.cpp:5:0: ../boost/boost/mpl/pair.hpp: At global scope: ../boost/boost/mpl/pair.hpp: In instantiation of 'boost::mpl::first<mpl_::arg<1> >': test.cpp:34:36: instantiated from here ../boost/boost/mpl/pair.hpp:43:31: fout: no type named 'first' in 'struct mpl_::arg<1>' ../boost/boost/mpl/pair.hpp: In instantiation of 'boost::mpl::second<mpl_::arg<2> >': test.cpp:35:37: instantiated from here ../boost/boost/mpl/pair.hpp:56:32: fout: no type named 'second' in 'struct mpl_::arg<2>' test.cpp: In functie 'int main()': test.cpp:36:13: fout: template argument 1 is invalid test.cpp:36:13: fout: template argument 2 is invalid In file included from test.cpp:5:0: ../boost/boost/mpl/pair.hpp: At global scope: ../boost/boost/mpl/pair.hpp: In instantiation of 'boost::mpl::second<mpl_::arg<1> >': test.cpp:38:37: instantiated from here ../boost/boost/mpl/pair.hpp:56:32: fout: no type named 'second' in 'struct mpl_::arg<1>' test.cpp: In functie 'int main()': test.cpp:40:13: fout: template argument 1 is invalid test.cpp:40:13: fout: template argument 2 is invalid test.cpp:41:9: fout: template argument 1 is invalid test.cpp:41:9: fout: template argument 2 is invalid test.cpp:41:9: fout: template argument 3 is invalid test.cpp:42:5: fout: template argument 3 is invalid test.cpp:42:24: fout: invalid type in declaration before ';' token **

2 1

Re: [Boost-users] [Graph] On Dijkstra SSSP performance
by Leo Hidd 13 Mar '12

13 Mar '12

sry, I could not make a reply in the post through http://thread.gmane.org/gmane.comp.lib.boost.user/73084/focus=73086 If i use the "Follow up" action and post it I have this message: "You seem to be top-posting. Don't do that." That's why I'm doing this now. Hope it works. Anyways... thx Jeremiah for the inputs. I tested what you said for a mesh of 3 million vertices (then, 9 million edges), and here is a summary of the different configs: 1- graph type: out-edge as listS; predecessors: vector<vertex_descriptor> p(num_vertices(g)); distances: vector<double> d(num_vertices(g)); NDEBUG defined (release configuration); no optimizations: - dijkstra_shortest_paths elapsed time: 11970ms 2- graph type: out-edge as listS; predecessors: vertex_descriptor* p = new vertex_descriptor[num_vertices(g)]; distances: double* d = new double[num_vertices(g)]; NDEBUG defined (release configuration); no optimizations: - dijkstra_shortest_paths elapsed time: 9446ms 3- graph type: out-edge as vecS; predecessors: vertex_descriptor* p = new vertex_descriptor[num_vertices(g)]; distances: double* d = new double[num_vertices(g)]; NDEBUG defined (release configuration); no optimizations: - dijkstra_shortest_paths elapsed time: 8436ms 4- graph type: out-edge as listS; predecessors: vertex_descriptor* p = new vertex_descriptor[num_vertices(g)]; distances: double* d = new double[num_vertices(g)]; NDEBUG defined (release configuration); with optimizations (option /Ox) - dijkstra_shortest_paths elapsed time: 5741ms 5- my implementation without optimizations takes 3289ms and with optimizations takes 2860ms. Using predecessors and distances storage as simple arrays instead of std::vector have a real gain (although optimization does even more). Is it possible to use arrays (maybe array of arrays) instead of vecS for OutEdgeList and VertexList? Or put arrays inside some kind of class with functions allowing compatibility/interfacing with the Dijkstra algorithm (like insert, sort, remove, or whatever it needs)? Since the Dijkstra algorithm does more read access to the edge list than the distance or path arrays, it could really accelerate things. thx again, leo

2 10

error compiling under Solaris10 in release mode
by Magallo 13 Mar '12

13 Mar '12

Hi all, I am new to boost libraries and I find them very powerful. I'm using the Boost.Interprocess library to make some interprocess communication and synchronization. I'm using mutexes and I was able to let my program build and work as expected. This is good when I build it in Debug mode, when I switch to release mode, i.e. using the -O2 or -O3 flag to optimize performances, the compiler returns this error: "boost/interprocess/detail/atomic.hpp:316: internal compiler error: in rewrite_stmt, at tree-into-ssa.c:1380" Please submit a full bug report, with preprocessed source if appropriate. When I use a debug compilation, without -O2, it works fine. Why that? I read somewhere that I could try to define BOOST_SP_USE_PTHREADS but I tryed and nothing changes. Is it something related to the operating system? I see that the error brings me to inline boost::uint32_t atomic_cas32 (volatile boost::uint32_t *mem, boost::uint32_t with, boost::uint32_t cmp) { return __sync_val_compare_and_swap(const_cast<boost::uint32_t *>(mem), cmp, with); } in the atomic.hpp file. The compiler is: g++ --version sparc-sun-solaris2.10-g++ (GCC) 4.2.1 (20090222) (gccfss) Copyright (C) 2007 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. What could I do? Please help. Cheers.

1 0

[Graph] How to do multi source shortest path
by Leo Hidd 13 Mar '12

13 Mar '12

Hi all, I have a graph and multiple sources (please read this thread: http://thread.gmane.org/gmane.comp.lib.boost.user/73084/focus=73086 first paragraph, for the characteristics of the graph, if it matters). So, instead of running the single source shortest path (SSSP) algorithm (e.g., dijkstra_shortest_paths()) multiple times, what I do is that I specify several sources instead of only one (so all the sources are initialized with distance 0 and put into the queue) and than I run Dijkstra as one usually does for SSSP. Doing so, the multi source runs almost as fast as a single source instead of running NbOfSouces*ElapsedTimeForSingleSource. Then, I'd like to know if it's possible to use boost algorithms for multi-source shortest path, like specifying several sources or anything alike. And, in the case it is possible, it would be possible to have an array with the index of the source the closest to a given node? All pairs is not a solution because the number of sources is way less than the number of nodes in the graph and because all sources use lots of memory for storing the distances (for a 4 million nodes graph I'd need a 4*10^12 elements table, don't?) thx for your time, leo

4 14

Re: [Boost-users] Boost interprocess containers - performance issue
by Naveen Santhapuri 12 Mar '12

12 Mar '12

> Date: Sun, 11 Mar 2012 12:21:36 +0100 > From: Ion Gazta?aga <igaztanaga(a)gmail.com> > To: Boost User List <boost-users(a)lists.boost.org> > Subject: Re: [Boost-users] Boost interprocess containers - performance issue > Message-ID: <4F5C8AC0.9020508(a)gmail.com> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed >El 11/03/2012 1:00, Naveen Santhapuri escribi?: >> Hello all, >> >> I am experimenting with Boost interprocess containers and like the >> ease of using them. I want to use these in place of the "linux shared >> memory+shared memory allocator + std containers". However, I am seeing >> some performance hit when using boost. I measured the times for vector >> access from shared memory. I define access as indexing into the vector >> (v[i]) (all times in milli seconds): >> >> Num elements Local heap | Boost ipc | Shmat() >> 100,000 0.23 0.39 0.27 >> 1,000,000 2.3 3.85 2.7 > What does Shmat mean? Are you putting a std::vector directly in a shared > memory segment? > Obviously if you put boost containers in shared memory you don't store > raw pointers (as every process can map the memory in a different > address, making raw pointers unusable). When using offset_ptr we have a > performance hit as we need to calculate the real address computing a > pointer arithmetic (this + stored offset). Apart from that, as > offset_ptr relies on undefined behaviour, the offset calculation must be > marked as non-inlineable in most compilers, increasing the performance > hit. I think it can be improved using some kind of compiler-specific > annotations or assembler, but I have no skills to do that nowadays. > > Best, > > Ion Thank you for the reply Ion. Re: shmat() - Yes, I am creating a std::vector with shared allocator in shared memory. My use case: One executable (lets call it shvec) writes std containers to shared memory. Another instance of shvec reads those containers from shared memory. I want to do this to preload a large amount of data into memory, before my service starts, so that the start time of the service can be cut down. I want to use boost but I am afraid of the runtime hit. Even with the offset pointer, do the numbers above make sense (as much as 70% extra time)? My alternative strategy without boost ipc: I will be running on 64bit linux and hoping to map the shared memory segment to the same location in all instances using shmat(). To achieve that, the first instance gets the shared memory segment address, which will be used by the other instances that read from the shared memory. If I can map them to the same address, can I use raw pointers without any problem? Naveen

2 1

Boost timer initialization hangs in win_therad.ipp
by chaitanya sonavale 12 Mar '12

12 Mar '12

Hi, I have a C++ DLL which has exported functions which is used in a C# application via DllImport. The C++ DLL is linked to various .lib files which use boost functionality (thread, asio etc) internally and are compiled with BOOST_ALL_DYN_LINK option. When I run the application it just hangs with following stack trace. I get the same results if I convert this to a C++\CLI DLL and use it directly from the C# application. Stack Trace: ------------------------------------------------ OneComShim.dll!boost::asio::detail::win_thread::start_thread(boost::asio::detail ::win_thread::func_base * arg=0x035574f0, unsigned int stack_size=0x00010000) Line 98 + 0xe bytes C++ OneComShim.dll!boost::asio::detail::win_thread::win_thread<boost::asio::detail:: win_iocp_io_service::timer_thread_function> (boost::asio::detail::win_iocp_io_service::timer_thread_function f={...}, unsigned int stack_size=0x00010000) Line 72 C++ OneComShim.dll!boost::asio::detail::win_iocp_io_service::do_add_timer_queue(boos t::asio::detail::timer_queue_base & queue={...}) Line 471 + 0x31 bytes C++ OneComShim.dll!boost::asio::detail::win_iocp_io_service::add_timer_queue<boost:: asio::time_traits<boost::posix_time::ptime> > (boost::asio::detail::timer_queue<boost::asio::time_traits<boost::posix_time::pt ime> > & queue={...}) Line 78 C++ OneComShim.dll!boost::asio::detail::deadline_timer_service<boost::asio::time_tra its<boost::posix_time::ptime> >::deadline_timer_service<boost::asio::time_traits<boost::posix_time::ptime> > (boost::asio::io_service & io_service={...}) Line 68 C++ OneComShim.dll!boost::asio::deadline_timer_service<boost::posix_time::ptime,boos t::asio::time_traits<boost::posix_time::ptime> >::deadline_timer_service<boost::posix_time::ptime,boost::asio::time_traits<boos t::posix_time::ptime> >(boost::asio::io_service & io_service={...}) Line 73 C++ OneComShim.dll!boost::asio::detail::service_registry::create<boost::asio::deadli ne_timer_service<boost::posix_time::ptime,boost::asio::time_traits<boost::posix_ time::ptime> > >(boost::asio::io_service & owner={...}) Line 81 + 0x2f bytes C++ OneComShim.dll!boost::asio::detail::service_registry::do_use_service(const boost::asio::io_service::service::key & key={...}, boost::asio::io_service::service * (boost::asio::io_service &)* factory=0x100c770d) Line 123 + 0xc bytes C++ OneComShim.dll!boost::asio::detail::service_registry::use_service<boost::asio::d eadline_timer_service<boost::posix_time::ptime,boost::asio::time_traits<boost::p osix_time::ptime> > >() Line 49 C++ OneComShim.dll!boost::asio::use_service<boost::asio::deadline_timer_service<boos t::posix_time::ptime,boost::asio::time_traits<boost::posix_time::ptime> > > (boost::asio::io_service & ios={...}) Line 34 C++ OneComShim.dll!boost::asio::basic_io_object<boost::asio::deadline_timer_service< boost::posix_time::ptime,boost::asio::time_traits<boost::posix_time::ptime> > >::basic_io_object<boost::asio::deadline_timer_service<boost::posix_time::ptime, boost::asio::time_traits<boost::posix_time::ptime> > >(boost::asio::io_service & io_service={...}) Line 91 + 0x4b bytes C++ OneComShim.dll!boost::asio::basic_deadline_timer<boost::posix_time::ptime,boost: :asio::time_traits<boost::posix_time::ptime>,boost::asio::deadline_timer_service <boost::posix_time::ptime,boost::asio::time_traits<boost::posix_time::ptime> > >::basic_deadline_timer<boost::posix_time::ptime,boost::asio::time_traits<boost: :posix_time::ptime>,boost::asio::deadline_timer_service<boost::posix_time::ptime ,boost::asio::time_traits<boost::posix_time::ptime> > >(boost::asio::io_service & io_service={...}) Line 147 C++ OneComShim.dll!CORE::SERVER_COMMUNICATOR::CurlHandler::CurlHandler(CORE::SERVER_ COMMUNICATOR::ServerAgent * serverAgent=0x1029c950) Line 37 + 0x118 bytes C++ OneComShim.dll!CORE::SERVER_COMMUNICATOR::ServerAgent::ServerAgent() Line 22 C++ OneComShim.dll!`dynamic initializer for 'CORE::SERVER_COMMUNICATOR::ServerAgent::agent''() Line 17 + 0x28 bytes C++ TestWin.exe!TestWin.Program.Main(string[] args = {string[0x00000000]}) Line 16 + ------------------------------------------------ As it can be seen, it stops in start_thread inside win_thread.ipp at following lines on WaitForSingleObject if (entry_event) { ::WaitForSingleObject(entry_event, INFINITE); ::CloseHandle(entry_event); } I am just creating a timer object in the code and do not understand why it leads to this situation. Also everything works fine when I use a LIB instead of DLL and all code is in C++. Environment details are as follows OS: Win XP IDE: Visual Studio 2010 Boost version: boost_1_48_0 Regards, Chaitanya

1 0

Keynotes for C++ Now!
by Jon Kalb 12 Mar '12

12 Mar '12

C++ Now! (formerly BoostCon) is pleased to announce its lineup of keynote speakers for the 2012 conference: Howard Hinnant, Sean Parent, and Daveed Vandevoorde. Howard Hinnant is the principal author of libc++, the standard C++ library implementation used by the Clang compiler. During the development of C++11, Howard served as chairman of the C++ Standards Committee¹s Library Working Group, and is largely responsible for the design of what Scott Meyers has called the language¹s ³flagship new feature:² rvalue references. His keynote will demonstrate how rvalue references are used in move semantics and perfect forwarding. Sean Parent is a principal scientist and software architect for Adobe¹s mobile digital imaging group and formerly managed Adobe¹s Software Technology Lab. He was also the keynote speaker for the very first BoostCon, where he gave one of the most inspiring and memorable talks we¹ve ever had. We¹re very pleased to welcome him back for an encore. He will be speaking on what¹s next for C++ programmers: how do we write beautiful code that truly exploits today¹s hardware and infrastructure? Daveed Vandevoorde is a compiler developer with Edison Design Group, the author (with Nicolai Josuttis) of ³C++ Templates: The Complete Guide,² a co-founder of comp.lang.c++.moderated, and one of the few C++ Committee Members who is equally comfortable working on library design, language evolution, or the arcana of core language issues. Daveed is currently a leader in the effort to add true modules to the C++ language. He¹ll be talking about the design of the C++ modules feature and what it would mean for the future of the language. ³We are thrilled to have such a powerhouse lineup in the first year of the new language standard,² said Dave Abrahams the conference founder and co-chair. ³C++Now! 2012 is truly shaping up to be a feast for the C++ enthusiast.² C++ Now! 2012 will be held May 13-18 in Aspen Colorado. Registration is now open at http://cppnow.org/registration/. Keynote details at http://cppnow.org/overview/. Jon Co-Chair C++ Now!

1 0

Strange error while using BOOST_FOREACH
by John M. Dlugosz 12 Mar '12

12 Mar '12

I used BOOST_FOREACH with a collection whose iterator is derived from boost::iterator_adaptor. I got this: 7>E:\boost_1_47\boost/range/iterator.hpp(63): error C2039: 'type' : is not a member of 'boost::mpl::eval_if_c<C,F1,F2>' 7> with 7> [ 7> C=true, 7> F1=boost::range_const_iterator<VSeeClient_list>, 7> F2=boost::range_mutable_iterator<const type> 7> ] 7> E:\boost_1_47\boost/foreach.hpp(670) : see reference to class template instantiation 'boost::range_iterator<C>' being compiled 7> with 7> [ 7> C=const type 7> ] 7> AutoPerformance\APSystem.cpp(224) : see reference to function template instantiation 'boost::foreach_detail_::auto_any<T> boost::foreach_detail_::begin<VSeeClient_list,boost::mpl::false_>(boost::foreach_detail_::auto_any_t,boost::foreach_detail_::type2type<VSeeClient_list,C> *,boost::mpl::false_ *)' being compiled 7> with 7> [ 7> T=VSeeClient_list::iterator, 7> C=boost::mpl::false_ 7> ] The error points here: template< typename C > struct range_iterator { typedef BOOST_RANGE_DEDUCED_TYPENAME mpl::eval_if_c< is_const<C>::value, range_const_iterator< typename remove_const<C>::type >, range_mutable_iterator<C> >::type type; }; Now a little looking through the manual tells me that mpl::eval_if_c::type will be one of the two metafunctions, so it should not disappear completely. I don't believe I missed anything from the iterator code: the Value type is given as the 3rd template argument to the iterator_adaptor, so that should set up any metafunctions needed to find the iterator's type, right? I'm compiling using MS Visual Studio 10. —John

2 3

[Graph] Help with delta_stepping_shortest_paths()
by Leo Hidd 12 Mar '12

12 Mar '12

Hi all, I'm having a hard time trying to use the distributed SSSP algorithm delta_stepping_shortest_paths. I found this example http://code.google.com/p/boost-doc-zh/source/browse/trunk/libs/graph_parall… but it compiles with error in line 192: 'boost::property_map<Graph,Property>' : more than one partial specialization matches the template argument list (MS Visual Studio 2008, MPI from Microsoft HPC Pack 2008 R2, Boost 1.48) Do anyone have any suggestion, or any other example? thx for your time, leo

1 0

Trouble with template on boost::function and boost::bind
by pwx 11 Mar '12

11 Mar '12

I tried to create a template function that receives boost::function as parameter. Say like this: template <typename T1, typename T2> void proc(const boost::function<void(const T1&, T2&)> &p) { // ... } void f(const string& s1, string&s2) { // ... } Everything goes ok when I called proc( boost::function<void(const string&, string&)>(f) ). But when I try this: proc(boost::bind(f, _1, _2)); The compiler refused with the error: no matching function for call to ‘proc(boost::_bi::bind_t<boost::_bi::unspecified, F, boost::_bi::list2<boost::arg<1>, boost::arg<2> > >)’ Anyway to fulfill this design purpose? Thanks.

3 2

Boost interprocess containers - performance issue
by Naveen Santhapuri 11 Mar '12

11 Mar '12

Hello all, I am experimenting with Boost interprocess containers and like the ease of using them. I want to use these in place of the "linux shared memory+shared memory allocator + std containers". However, I am seeing some performance hit when using boost. I measured the times for vector access from shared memory. I define access as indexing into the vector (v[i]) (all times in milli seconds): Num elements Local heap | Boost ipc | Shmat() 100,000 0.23 0.39 0.27 1,000,000 2.3 3.85 2.7 I repeated these for different number of elements and the results scaled as above. I used callgrid+kcachegrind to profile boost and shmat() access, and I see there is a significant amount of time spent in boost offset pointer calculation and mcount ( I don't know what that is). Is there something I am missing or is this an expected performance hit, for using boost with all off the additional functionality, compared to linux shared memory? Thank you, Naveen

2 1

using boost.locale with boost.iostreams
by Sean Farrow 10 Mar '12

10 Mar '12

Hi: Are there any examples of doing character conversions (std::wstring to std::string or char) using boost.locale in conjunction with boost.iostreams. Any help appreciated. Cheers Sean.

2 1

Re: [Boost-users] Identify cycles in a undirected graph
by ddboy40 10 Mar '12

10 Mar '12

Sorry for the Doble posting, wast'nt yet register to the mailing list. Cheers! hi Folks, I've played around with the following example: struct detect_loops : public boost::dfs_visitor<> { template <class Edge, class Graph> void back_edge(Edge e, const Graph& g) { std::cout << source(e, g) << " -- " << target(e, g) << "\n"; } }; int main(int,char*[]) { typedef std::pair<int,int> Edge; std::vector<Edge> edges; edges.push_back(Edge(0,1)); edges.push_back(Edge(1,2)); edges.push_back(Edge(2,3)); edges.push_back(Edge(3,1)); edges.push_back(Edge(4,5)); edges.push_back(Edge(5,0)); edges.push_back(Edge(4,0)); edges.push_back(Edge(5,6)); edges.push_back(Edge(2,6)); typedef adjacency_list< vecS, vecS, undirectedS, no_property, property<edge_color_t, default_color_type> > graph_t; typedef graph_traits<graph_t>::vertex_descriptor vertex_t; graph_t g(edges.begin(), edges.end(), 7); std::cout << "back edges:\n"; detect_loops vis; undirected_dfs(g, root_vertex(vertex_t(0)).visitor(vis).edge_color_map(get(edge_color, g))); std::cout << std::endl; return 0; } However, I donot know how and where to place the predeccesor recorder. Secondly, I actually need but all the cycles, i.e. these may not have only distinct verterces. i.e some vertices may occur repeated in certain circles. My example above has 3 distinct cycles I guess and thats wha t the the back_edge() gives. But, I'll like to have all the hamiltonian cycles (hope they call it like that ;)). Thanks in advance for the tipps. Daniel -- View this message in context: http://boost.2283326.n4.nabble.com/Identify-cycles-in-a-undirected-graph-tp… Sent from the Boost - Users mailing list archive at Nabble.com.

2 3

iter and reverse_iter
by MM 09 Mar '12

09 Mar '12

Hello, As much as .end() returns an iterator pointing to the element past last of a std container, and rend() a reverse iter pointing to the element before first of a container, is there a way to have 1 object that points to "before first", a value in the container, and "after last" in 1 go? MM

1 0

boost.python quick start hanging on Mac OS X 10.5
by Harry Griff 09 Mar '12

09 Mar '12

Hi, I have downloaded boost_1_49_0 to my Mac with OS X 10.5.8. I then ran: In the home folder I have: using python : 3.1 : /Library/Frameworks/Python.framework/Versions/3.1/bin/python3.1 ; In user-config.jam. I then ran the following: *** *** Start Screen dump 1 *** $ ./bjam --with-python --user-config=user-config.jam Building the Boost C++ Libraries. Component configuration: - chrono : not building - date_time : not building - exception : not building - filesystem : not building - graph : not building - graph_parallel : not building - iostreams : not building - locale : not building - math : not building - mpi : not building - program_options : not building - python : building - random : not building - regex : not building - serialization : not building - signals : not building - system : not building - test : not building - thread : not building - timer : not building - wave : not building ...patience... ...patience... ...found 1599 targets... ...updating 2 targets... darwin.link.dll bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/libboost_python3.dylib Undefined symbols: "_PyFile_AsFile", referenced from: boost::python::exec_file(boost::python::str, boost::python::api::object, boost::python::api::object)in exec.o "_PyString_FromFormat", referenced from: boost::python::converter::rvalue_from_python_stage2(_object*, boost::python::converter::rvalue_from_python_stage1_data&, boost::python::converter::registration const&)in from_python.o boost::python::converter::(anonymous namespace)::throw_no_lvalue_from_python(_object*, boost::python::converter::registration const&, char const*) in from_python.o boost::python::converter::(anonymous namespace)::lvalue_result_from_python(_object*, boost::python::converter::registration const&, char const*) in from_python.o boost::python::converter::registration::to_python(void const volatile*) constin registry.o _enum_repr in enum.o _enum_repr in enum.o "_PyClass_Type", referenced from: _PyClass_Type$non_lazy_ptr in function.o "_PyNumber_Divide", referenced from: boost::python::api::operator/(boost::python::api::object const&, boost::python::api::object const&)in object_operators.o "_PyString_FromStringAndSize", referenced from: boost::python::numeric::(anonymous namespace)::load(bool) in numeric.o boost::python::detail::str_base::str_base(char const*, char const*)in str.o boost::python::detail::str_base::str_base(char const*, char const*)in str.o boost::python::detail::str_base::str_base(char const*, unsigned long)in str.o boost::python::detail::str_base::str_base(char const*, unsigned long)in str.o boost::python::converter::do_return_to_python(char)in builtin_converters.o boost::python::tuple boost::python::make_tuple<boost::python::str, boost::python::api::object, boost::python::str, boost::python::str, boost::python::str, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::str>(boost::python::str const&, boost::python::api::object const&, boost::python::str const&, boost::python::str const&, boost::python::str const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, boost::python::str const&)in function_doc_signature.o boost::python::tuple boost::python::make_tuple<boost::python::api::object, boost::python::str, boost::python::str, boost::python::str, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::str>(boost::python::api::object const&, boost::python::str const&, boost::python::str const&, boost::python::str const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, boost::python::str const&)in function_doc_signature.o boost::python::tuple boost::python::make_tuple<boost::python::str, boost::python::api::object, boost::python::str, boost::python::str, boost::python::str, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >(boost::python::str const&, boost::python::api::object const&, boost::python::str const&, boost::python::str const&, boost::python::str const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)in function_doc_signature.o "_PyInt_Type", referenced from: _PyInt_Type$non_lazy_ptr in enum.o "_PyString_FromString", referenced from: boost::python::detail::str_base::str_base()in str.o boost::python::detail::str_base::str_base()in str.o boost::python::detail::str_base::str_base(char const*)in str.o boost::python::detail::str_base::str_base(char const*)in str.o boost::python::converter::do_return_to_python(char const*)in builtin_converters.o "_PyInt_AsLong", referenced from: boost::python::detail::list_base::count(boost::python::api::object const&) constin list.o boost::python::detail::list_base::index(boost::python::api::object const&) constin list.o boost::python::detail::list_base::insert(boost::python::api::object const&, boost::python::api::object const&)in list.o boost::python::detail::str_base::startswith(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::isupper() constin str.o boost::python::detail::str_base::istitle() constin str.o boost::python::detail::str_base::isspace() constin str.o boost::python::detail::str_base::islower() constin str.o boost::python::detail::str_base::isdigit() constin str.o boost::python::detail::str_base::isalpha() constin str.o boost::python::detail::str_base::isalnum() constin str.o boost::python::detail::str_base::startswith(boost::python::api::object const&) constin str.o boost::python::detail::str_base::startswith(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::find(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::index(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::rfind(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::rindex(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::find(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::index(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::rfind(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::rindex(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::endswith(boost::python::api::object const&) constin str.o boost::python::detail::str_base::find(boost::python::api::object const&) constin str.o boost::python::detail::str_base::index(boost::python::api::object const&) constin str.o boost::python::detail::str_base::rfind(boost::python::api::object const&) constin str.o boost::python::detail::str_base::rindex(boost::python::api::object const&) constin str.o _instance_new in class.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<int, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<int> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<long, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<long> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<signed char, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<signed char> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<short, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<short> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o "_PyNumber_InPlaceDivide", referenced from: boost::python::api::operator/=(boost::python::api::object&, boost::python::api::object const&)in object_operators.o "_PyString_InternFromString", referenced from: _function_get_name in function.o "_PyString_Size", referenced from: boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::converter::(anonymous namespace)::string_rvalue_from_python>::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o "_PyFile_FromString", referenced from: boost::python::exec_file(boost::python::str, boost::python::api::object, boost::python::api::object)in exec.o boost::python::exec_file(boost::python::str, boost::python::api::object, boost::python::api::object)in exec.o "_PyString_Type", referenced from: _PyString_Type$non_lazy_ptr in str.o "_PyInt_FromLong", referenced from: boost::python::numeric::aux::array_base::argmin(long)in numeric.o boost::python::numeric::aux::array_base::argmax(long)in numeric.o boost::python::numeric::aux::array_base::argsort(long)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long, long>(_object*, long const&, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long, long>(_object*, long const&, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long, long>(_object*, long const&, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long>(_object*, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long>(_object*, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, boost::python::api::object, long>(_object*, boost::python::api::object const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::list_base::pop(long)in list.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, boost::python::api::object>(_object*, long const&, boost::python::api::object const&, boost::type<boost::python::api::object>*)in list.o boost::python::objects::enum_base::to_python(_typeobject*, long)in enum.o boost::python::objects::enum_base::to_python(_typeobject*, long)in enum.o boost::python::objects::enum_base::add_value(char const*, long)in enum.o boost::python::objects::enum_base::add_value(char const*, long)in enum.o boost::python::objects::enum_base::export_values() in enum.o boost::python::objects::enum_base::export_values() in enum.o _object* boost::python::api::object_base_initializer<unsigned int>(unsigned int const&)in enum.o _object* boost::python::api::object_base_initializer<unsigned long>(unsigned long const&)in class.o boost::python::objects::function_doc_signature_generator::parameter_string(boost::python::objects::py_function const&, unsigned long, boost::python::api::object, bool)in function_doc_signature.o boost::python::objects::function_doc_signature_generator::pretty_signature(boost::python::objects::function const*, unsigned long, bool)in function_doc_signature.o boost::python::api::object::object<int>(int const&)in function_doc_signature.o boost::python::api::proxy<boost::python::api::slice_policies> boost::python::api::object_operators<boost::python::api::object>::slice<int, boost::python::api::slice_nil>(int const&, boost::python::api::slice_nil const&)in function_doc_signature.o "_Py_InitModule4", referenced from: boost::python::detail::init_module(char const*, void (*)())in module.o "_PyString_AsString", referenced from: _enum_repr in enum.o _enum_repr in enum.o _enum_repr in enum.o boost::python::converter::(anonymous namespace)::convert_to_cstring(_object*) in builtin_converters.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::converter::(anonymous namespace)::string_rvalue_from_python>::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o ld: symbol(s) not found collect2: ld returned 1 exit status "g++" -dynamiclib -Wl,-single_module -install_name "libboost_python3.dylib" -L"/Library/Frameworks/Python.framework/Versions/3.1/lib" -L"/Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/config" -o "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/libboost_python3.dylib" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/numeric.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/list.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/long.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/dict.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/tuple.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/str.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/slice.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/from_python.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/registry.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/type_id.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/enum.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/class.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/function.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/inheritance.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/life_support.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/pickle_support.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/errors.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/module.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/builtin_converters.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/arg_to_python_base.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/iterator.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/stl_iterator.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object_protocol.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object_operators.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/wrapper.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/import.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/exec.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/function_doc_signature.o" -lpython3.1 -headerpad_max_install_names -Wl,-dead_strip -no_dead_strip_inits_and_terms ...failed darwin.link.dll bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/libboost_python3.dylib... ...skipped <pstage/lib>libboost_python3.dylib for lack of <pbin.v2/libs/python/build/darwin-4.0.1/release/threading-multi>libboost_python3.dylib... ...failed updating 1 target... ...skipped 1 target... *** *** End Screen dump 1 *** So I changed to 2.7 in the user config file and got: *** *** Start Screen dump 2 *** ./bjam --with-python --user-config=user-config.jam Building the Boost C++ Libraries. Component configuration: - chrono : not building - date_time : not building - exception : not building - filesystem : not building - graph : not building - graph_parallel : not building - iostreams : not building - locale : not building - math : not building - mpi : not building - program_options : not building - python : building - random : not building - regex : not building - serialization : not building - signals : not building - system : not building - test : not building - thread : not building - timer : not building - wave : not building ...patience... ...patience... ...found 1597 targets... The Boost C++ Libraries were successfully built! The following directory should be added to compiler include paths: /Users/me/Desktop/boost_1_49_0 The following directory should be added to linker library paths: /Users/me/Desktop/boost_1_49_0/stage/lib *** *** End Screen dump 2 *** So that seemed to work. I then entered: *** *** Start Screen dump 3 *** $cd libs/python/example/quickstart/ $../../../../bjam toolset=darwin --verbose-test test ...patience... ...patience... ...found 1680 targets... ...updating 17 targets... common.mkdir bin common.mkdir bin/test_embed.test common.mkdir bin/test_embed.test/darwin-4.0.1 common.mkdir bin/test_embed.test/darwin-4.0.1/debug common.mkdir bin/darwin-4.0.1 common.mkdir bin/darwin-4.0.1/debug darwin.compile.c++ bin/darwin-4.0.1/debug/embedding.o darwin.link bin/darwin-4.0.1/debug/embedding testing.capture-output bin/test_embed.test/darwin-4.0.1/debug/test_embed.run ====== BEGIN OUTPUT ====== registering extension module embedded_hello... defining Python class derived from Base... testing derived class from C++... success! running file script.py... Hello World ! success! intentionally causing a python exception... Traceback (most recent call last): File "<string>", line 1, in <module> NameError: name 'unknown' is not defined No errors detected. EXIT STATUS: 0 ====== END OUTPUT ====== **passed** bin/test_embed.test/darwin-4.0.1/debug/test_embed.test common.mkdir bin/test_ext.test common.mkdir bin/test_ext.test/darwin-4.0.1 common.mkdir bin/test_ext.test/darwin-4.0.1/debug darwin.compile.c++ bin/darwin-4.0.1/debug/extending.o darwin.link.dll bin/darwin-4.0.1/debug/extending.so *** *** End Screen dump 3 *** It hangs on the last line so I have to cancel it. I then ran: *** *** Start Screen dump 4 *** $ python2.7 test_extending.py Trying: from extending import * Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 6, in test_extending Failed example: from extending import * Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[0]>", line 1, in <module> from extending import * ImportError: No module named extending Trying: hi = hello('California') Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 7, in test_extending Failed example: hi = hello('California') Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[1]>", line 1, in <module> hi = hello('California') NameError: name 'hello' is not defined Trying: hi.greet() Expecting: 'Hello from California' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 8, in test_extending Failed example: hi.greet() Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[2]>", line 1, in <module> hi.greet() NameError: name 'hi' is not defined Trying: invite(hi) Expecting: 'Hello from California! Please come soon!' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 10, in test_extending Failed example: invite(hi) Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[3]>", line 1, in <module> invite(hi) NameError: name 'invite' is not defined Trying: hi.invite() Expecting: 'Hello from California! Please come soon!' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 12, in test_extending Failed example: hi.invite() Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[4]>", line 1, in <module> hi.invite() NameError: name 'hi' is not defined Trying: class wordy(hello): def greet(self): return hello.greet(self) + ', where the weather is fine' Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 15, in test_extending Failed example: class wordy(hello): def greet(self): return hello.greet(self) + ', where the weather is fine' Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[5]>", line 1, in <module> class wordy(hello): NameError: name 'hello' is not defined Trying: hi2 = wordy('Florida') Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 19, in test_extending Failed example: hi2 = wordy('Florida') Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[6]>", line 1, in <module> hi2 = wordy('Florida') NameError: name 'wordy' is not defined Trying: hi2.greet() Expecting: 'Hello from Florida, where the weather is fine' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 20, in test_extending Failed example: hi2.greet() Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[7]>", line 1, in <module> hi2.greet() NameError: name 'hi2' is not defined Trying: invite(hi2) Expecting: 'Hello from Florida! Please come soon!' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 22, in test_extending Failed example: invite(hi2) Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[8]>", line 1, in <module> invite(hi2) NameError: name 'invite' is not defined 1 items had no tests: test_extending.run ********************************************************************** 1 items had failures: 9 of 9 in test_extending 9 tests in 2 items. 0 passed and 9 failed. ***Test Failed*** 9 failures. *** *** End Screen dump 4 *** If I enter bin/darwin-4.0.1/debug, I get this for ls -al: mes-computer-444:debug me$ ls -al total 2688 drwxr-xr-x 6 me me 204 Mar 9 11:36 . drwxr-xr-x 3 me me 102 Mar 9 11:36 .. -rwxr-xr-x 1 barrygriffin me 164080 Mar 9 11:36 embedding -rw-r--r-- 1 me me 472992 Mar 9 11:36 embedding.o -rw-r--r-- 1 me me 530060 Mar 9 11:36 extending.o -rwxr-xr-x 1 me me 199076 Mar 9 11:36 extending.so Why am I hanging? I'd like to get python3 to work with boost but maybe its best to fix the hanging problem first. Thanks, Barry Hi, I have downloaded boost_1_49_0 to my Mac with OS X 10.5.8. I then ran: In the home folder I have: using python : 3.1 : /Library/Frameworks/Python.framework/Versions/3.1/bin/python3.1 ; In user-config.jam. I then ran the following: *** *** Start Screen dump 1 *** $ ./bjam --with-python --user-config=user-config.jam Building the Boost C++ Libraries. Component configuration: - chrono : not building - date_time : not building - exception : not building - filesystem : not building - graph : not building - graph_parallel : not building - iostreams : not building - locale : not building - math : not building - mpi : not building - program_options : not building - python : building - random : not building - regex : not building - serialization : not building - signals : not building - system : not building - test : not building - thread : not building - timer : not building - wave : not building ...patience... ...patience... ...found 1599 targets... ...updating 2 targets... darwin.link.dll bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/libboost_python3.dylib Undefined symbols: "_PyFile_AsFile", referenced from: boost::python::exec_file(boost::python::str, boost::python::api::object, boost::python::api::object)in exec.o "_PyString_FromFormat", referenced from: boost::python::converter::rvalue_from_python_stage2(_object*, boost::python::converter::rvalue_from_python_stage1_data&, boost::python::converter::registration const&)in from_python.o boost::python::converter::(anonymous namespace)::throw_no_lvalue_from_python(_object*, boost::python::converter::registration const&, char const*) in from_python.o boost::python::converter::(anonymous namespace)::lvalue_result_from_python(_object*, boost::python::converter::registration const&, char const*) in from_python.o boost::python::converter::registration::to_python(void const volatile*) constin registry.o _enum_repr in enum.o _enum_repr in enum.o "_PyClass_Type", referenced from: _PyClass_Type$non_lazy_ptr in function.o "_PyNumber_Divide", referenced from: boost::python::api::operator/(boost::python::api::object const&, boost::python::api::object const&)in object_operators.o "_PyString_FromStringAndSize", referenced from: boost::python::numeric::(anonymous namespace)::load(bool) in numeric.o boost::python::detail::str_base::str_base(char const*, char const*)in str.o boost::python::detail::str_base::str_base(char const*, char const*)in str.o boost::python::detail::str_base::str_base(char const*, unsigned long)in str.o boost::python::detail::str_base::str_base(char const*, unsigned long)in str.o boost::python::converter::do_return_to_python(char)in builtin_converters.o boost::python::tuple boost::python::make_tuple<boost::python::str, boost::python::api::object, boost::python::str, boost::python::str, boost::python::str, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::str>(boost::python::str const&, boost::python::api::object const&, boost::python::str const&, boost::python::str const&, boost::python::str const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, boost::python::str const&)in function_doc_signature.o boost::python::tuple boost::python::make_tuple<boost::python::api::object, boost::python::str, boost::python::str, boost::python::str, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::str>(boost::python::api::object const&, boost::python::str const&, boost::python::str const&, boost::python::str const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, boost::python::str const&)in function_doc_signature.o boost::python::tuple boost::python::make_tuple<boost::python::str, boost::python::api::object, boost::python::str, boost::python::str, boost::python::str, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >(boost::python::str const&, boost::python::api::object const&, boost::python::str const&, boost::python::str const&, boost::python::str const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)in function_doc_signature.o "_PyInt_Type", referenced from: _PyInt_Type$non_lazy_ptr in enum.o "_PyString_FromString", referenced from: boost::python::detail::str_base::str_base()in str.o boost::python::detail::str_base::str_base()in str.o boost::python::detail::str_base::str_base(char const*)in str.o boost::python::detail::str_base::str_base(char const*)in str.o boost::python::converter::do_return_to_python(char const*)in builtin_converters.o "_PyInt_AsLong", referenced from: boost::python::detail::list_base::count(boost::python::api::object const&) constin list.o boost::python::detail::list_base::index(boost::python::api::object const&) constin list.o boost::python::detail::list_base::insert(boost::python::api::object const&, boost::python::api::object const&)in list.o boost::python::detail::str_base::startswith(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::isupper() constin str.o boost::python::detail::str_base::istitle() constin str.o boost::python::detail::str_base::isspace() constin str.o boost::python::detail::str_base::islower() constin str.o boost::python::detail::str_base::isdigit() constin str.o boost::python::detail::str_base::isalpha() constin str.o boost::python::detail::str_base::isalnum() constin str.o boost::python::detail::str_base::startswith(boost::python::api::object const&) constin str.o boost::python::detail::str_base::startswith(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::find(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::index(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::rfind(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::rindex(boost::python::api::object const&, boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::find(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::index(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::rfind(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::rindex(boost::python::api::object const&, boost::python::api::object const&) constin str.o boost::python::detail::str_base::endswith(boost::python::api::object const&) constin str.o boost::python::detail::str_base::find(boost::python::api::object const&) constin str.o boost::python::detail::str_base::index(boost::python::api::object const&) constin str.o boost::python::detail::str_base::rfind(boost::python::api::object const&) constin str.o boost::python::detail::str_base::rindex(boost::python::api::object const&) constin str.o _instance_new in class.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<int, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<int> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<long, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<long> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<signed char, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<signed char> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<short, boost::python::converter::(anonymous namespace)::signed_int_rvalue_from_python<short> >::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o "_PyNumber_InPlaceDivide", referenced from: boost::python::api::operator/=(boost::python::api::object&, boost::python::api::object const&)in object_operators.o "_PyString_InternFromString", referenced from: _function_get_name in function.o "_PyString_Size", referenced from: boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::converter::(anonymous namespace)::string_rvalue_from_python>::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o "_PyFile_FromString", referenced from: boost::python::exec_file(boost::python::str, boost::python::api::object, boost::python::api::object)in exec.o boost::python::exec_file(boost::python::str, boost::python::api::object, boost::python::api::object)in exec.o "_PyString_Type", referenced from: _PyString_Type$non_lazy_ptr in str.o "_PyInt_FromLong", referenced from: boost::python::numeric::aux::array_base::argmin(long)in numeric.o boost::python::numeric::aux::array_base::argmax(long)in numeric.o boost::python::numeric::aux::array_base::argsort(long)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long, long>(_object*, long const&, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long, long>(_object*, long const&, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long, long>(_object*, long const&, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long>(_object*, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, long>(_object*, long const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, boost::python::api::object, long>(_object*, boost::python::api::object const&, long const&, boost::type<boost::python::api::object>*)in numeric.o boost::python::detail::list_base::pop(long)in list.o boost::python::detail::returnable<boost::python::api::object>::type boost::python::call<boost::python::api::object, long, boost::python::api::object>(_object*, long const&, boost::python::api::object const&, boost::type<boost::python::api::object>*)in list.o boost::python::objects::enum_base::to_python(_typeobject*, long)in enum.o boost::python::objects::enum_base::to_python(_typeobject*, long)in enum.o boost::python::objects::enum_base::add_value(char const*, long)in enum.o boost::python::objects::enum_base::add_value(char const*, long)in enum.o boost::python::objects::enum_base::export_values() in enum.o boost::python::objects::enum_base::export_values() in enum.o _object* boost::python::api::object_base_initializer<unsigned int>(unsigned int const&)in enum.o _object* boost::python::api::object_base_initializer<unsigned long>(unsigned long const&)in class.o boost::python::objects::function_doc_signature_generator::parameter_string(boost::python::objects::py_function const&, unsigned long, boost::python::api::object, bool)in function_doc_signature.o boost::python::objects::function_doc_signature_generator::pretty_signature(boost::python::objects::function const*, unsigned long, bool)in function_doc_signature.o boost::python::api::object::object<int>(int const&)in function_doc_signature.o boost::python::api::proxy<boost::python::api::slice_policies> boost::python::api::object_operators<boost::python::api::object>::slice<int, boost::python::api::slice_nil>(int const&, boost::python::api::slice_nil const&)in function_doc_signature.o "_Py_InitModule4", referenced from: boost::python::detail::init_module(char const*, void (*)())in module.o "_PyString_AsString", referenced from: _enum_repr in enum.o _enum_repr in enum.o _enum_repr in enum.o boost::python::converter::(anonymous namespace)::convert_to_cstring(_object*) in builtin_converters.o boost::python::converter::(anonymous namespace)::slot_rvalue_from_python<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::python::converter::(anonymous namespace)::string_rvalue_from_python>::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)in builtin_converters.o ld: symbol(s) not found collect2: ld returned 1 exit status "g++" -dynamiclib -Wl,-single_module -install_name "libboost_python3.dylib" -L"/Library/Frameworks/Python.framework/Versions/3.1/lib" -L"/Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/config" -o "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/libboost_python3.dylib" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/numeric.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/list.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/long.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/dict.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/tuple.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/str.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/slice.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/from_python.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/registry.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/type_id.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/enum.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/class.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/function.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/inheritance.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/life_support.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/pickle_support.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/errors.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/module.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/builtin_converters.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/converter/arg_to_python_base.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/iterator.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/stl_iterator.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object_protocol.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object_operators.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/wrapper.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/import.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/exec.o" "bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/object/function_doc_signature.o" -lpython3.1 -headerpad_max_install_names -Wl,-dead_strip -no_dead_strip_inits_and_terms ...failed darwin.link.dll bin.v2/libs/python/build/darwin-4.0.1/release/threading-multi/libboost_python3.dylib... ...skipped <pstage/lib>libboost_python3.dylib for lack of <pbin.v2/libs/python/build/darwin-4.0.1/release/threading-multi>libboost_python3.dylib... ...failed updating 1 target... ...skipped 1 target... *** *** End Screen dump 1 *** So I changed to 2.7 in the user config file and got: *** *** Start Screen dump 2 *** ./bjam --with-python --user-config=user-config.jam Building the Boost C++ Libraries. Component configuration: - chrono : not building - date_time : not building - exception : not building - filesystem : not building - graph : not building - graph_parallel : not building - iostreams : not building - locale : not building - math : not building - mpi : not building - program_options : not building - python : building - random : not building - regex : not building - serialization : not building - signals : not building - system : not building - test : not building - thread : not building - timer : not building - wave : not building ...patience... ...patience... ...found 1597 targets... The Boost C++ Libraries were successfully built! The following directory should be added to compiler include paths: /Users/me/Desktop/boost_1_49_0 The following directory should be added to linker library paths: /Users/me/Desktop/boost_1_49_0/stage/lib *** *** End Screen dump 2 *** So that seemed to work. I then entered: *** *** Start Screen dump 3 *** $cd libs/python/example/quickstart/ $../../../../bjam toolset=darwin --verbose-test test ...patience... ...patience... ...found 1680 targets... ...updating 17 targets... common.mkdir bin common.mkdir bin/test_embed.test common.mkdir bin/test_embed.test/darwin-4.0.1 common.mkdir bin/test_embed.test/darwin-4.0.1/debug common.mkdir bin/darwin-4.0.1 common.mkdir bin/darwin-4.0.1/debug darwin.compile.c++ bin/darwin-4.0.1/debug/embedding.o darwin.link bin/darwin-4.0.1/debug/embedding testing.capture-output bin/test_embed.test/darwin-4.0.1/debug/test_embed.run ====== BEGIN OUTPUT ====== registering extension module embedded_hello... defining Python class derived from Base... testing derived class from C++... success! running file script.py... Hello World ! success! intentionally causing a python exception... Traceback (most recent call last): File "<string>", line 1, in <module> NameError: name 'unknown' is not defined No errors detected. EXIT STATUS: 0 ====== END OUTPUT ====== **passed** bin/test_embed.test/darwin-4.0.1/debug/test_embed.test common.mkdir bin/test_ext.test common.mkdir bin/test_ext.test/darwin-4.0.1 common.mkdir bin/test_ext.test/darwin-4.0.1/debug darwin.compile.c++ bin/darwin-4.0.1/debug/extending.o darwin.link.dll bin/darwin-4.0.1/debug/extending.so *** *** End Screen dump 3 *** It hangs on the last line so I have to cancel it. I then ran: *** *** Start Screen dump 4 *** $ python2.7 test_extending.py Trying: from extending import * Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 6, in test_extending Failed example: from extending import * Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[0]>", line 1, in <module> from extending import * ImportError: No module named extending Trying: hi = hello('California') Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 7, in test_extending Failed example: hi = hello('California') Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[1]>", line 1, in <module> hi = hello('California') NameError: name 'hello' is not defined Trying: hi.greet() Expecting: 'Hello from California' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 8, in test_extending Failed example: hi.greet() Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[2]>", line 1, in <module> hi.greet() NameError: name 'hi' is not defined Trying: invite(hi) Expecting: 'Hello from California! Please come soon!' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 10, in test_extending Failed example: invite(hi) Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[3]>", line 1, in <module> invite(hi) NameError: name 'invite' is not defined Trying: hi.invite() Expecting: 'Hello from California! Please come soon!' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 12, in test_extending Failed example: hi.invite() Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[4]>", line 1, in <module> hi.invite() NameError: name 'hi' is not defined Trying: class wordy(hello): def greet(self): return hello.greet(self) + ', where the weather is fine' Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 15, in test_extending Failed example: class wordy(hello): def greet(self): return hello.greet(self) + ', where the weather is fine' Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[5]>", line 1, in <module> class wordy(hello): NameError: name 'hello' is not defined Trying: hi2 = wordy('Florida') Expecting nothing ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 19, in test_extending Failed example: hi2 = wordy('Florida') Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[6]>", line 1, in <module> hi2 = wordy('Florida') NameError: name 'wordy' is not defined Trying: hi2.greet() Expecting: 'Hello from Florida, where the weather is fine' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 20, in test_extending Failed example: hi2.greet() Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[7]>", line 1, in <module> hi2.greet() NameError: name 'hi2' is not defined Trying: invite(hi2) Expecting: 'Hello from Florida! Please come soon!' ********************************************************************** File "/Users/me/Desktop/boost_1_49_0/libs/python/example/quickstart/test_extending.py", line 22, in test_extending Failed example: invite(hi2) Exception raised: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/doctest.py", line 1248, in __run compileflags, 1) in test.globs File "<doctest test_extending[8]>", line 1, in <module> invite(hi2) NameError: name 'invite' is not defined 1 items had no tests: test_extending.run ********************************************************************** 1 items had failures: 9 of 9 in test_extending 9 tests in 2 items. 0 passed and 9 failed. ***Test Failed*** 9 failures. *** *** End Screen dump 4 *** If I enter bin/darwin-4.0.1/debug, I get this for ls -al: mes-computer-444:debug me$ ls -al total 2688 drwxr-xr-x 6 me me 204 Mar 9 11:36 . drwxr-xr-x 3 me me 102 Mar 9 11:36 .. -rwxr-xr-x 1 barrygriffin me 164080 Mar 9 11:36 embedding -rw-r--r-- 1 me me 472992 Mar 9 11:36 embedding.o -rw-r--r-- 1 me me 530060 Mar 9 11:36 extending.o -rwxr-xr-x 1 me me 199076 Mar 9 11:36 extending.so Why am I hanging? I'd like to get python3 to work with boost but maybe its best to fix the hanging problem first. Thanks, Barry

1 0

encoding data when serializing
by Sean Farrow 09 Mar '12

09 Mar '12

Hi: Is there a way of telling boost serialization to encode everything to base64 when encoding to xml. We are using std::wstring primarily. Any help appreciated. Cheers Sean.

2 5

[Spirit] Karma generator for JSON
by Ovanes Markarian 09 Mar '12

09 Mar '12

Hello Hartmut, as discussed @irc channel I am posting the example of my problem (I use boost 1.47): #include <boost/config/warning_disable.hpp> #include <boost/spirit/include/karma.hpp> #include <boost/spirit/include/karma_char_class.hpp> #include <boost/fusion/include/std_pair.hpp> #include <iterator> #include <cassert> #include <utility> #include <string> namespace karma = boost::spirit::karma; typedef std::pair<unsigned char, unsigned char> utf16_t; template<class OutIter> struct json_char_encoder2 : boost::spirit::karma::grammar<OutIter, std::string()> { json_char_encoder2() : json_char_encoder2::base_type(encoded_) { json_sym_.add ('"', "\\\"") ('/', "\\/") ('\\', "\\\\") ('\b', "\\b") ('\f', "\\f") ('\n', "\\n") ('\r', "\\r") ('\t', "\\t") ; using boost::spirit::iso8859_1::print; encoded_=*(json_sym_ | print | uchar_); uchar_ = karma::lit("\\u") << karma::hex << karma::hex; //also tried to use unicode_gen_; } karma::rule<OutIter, std::string()> encoded_; karma::symbols<char, char const*> json_sym_; karma::rule<OutIter, utf16_t()> uchar_; karma::uint_generator<unsigned short, 16> unicode_gen_; }; int main() { assert(2==sizeof(short)); typedef std::back_insert_iterator<std::string> iter_t; json_char_encoder2<iter_t> encoder2; std::string generated; iter_t sink(generated); std::string sinput="abc"; sinput.push_back(char(0xAA)); sinput.push_back(char(0xBB)); bool result = karma::generate(sink, encoder2, sinput); return 0; } The problem here is that I would like the generator in case of uchar_ to retrieve 2 subsequent string bytes and write them out as \uXXXX as specified at JSON.org. What I get is: a. IF: replacing utf16_t with unsigned short => and removing 1 of the karma::hex terminals => 2 calls where each byte is converted to unsigned short b. IF: having the source as it is => fails the generation, where the generated string is empty. One strange behavior as well: result is true for case b. Why? Regards, Ovanes

1 0

boost::units question
by Mario Charest 09 Mar '12

09 Mar '12

Hello, I have been reading the doc and writing small program to learn about boost::units. Incredible tool !!! My question is one of proper programming, as I am not sure I fully understood the intricacy of boost::units. What I would like to acheive is a unit of thou, inch, feet. Then I want to be able to copy from variable to variable and have everything converted automatically myunit:thou aaa(50000*thou) myunit:inch bbb(50000*thou); myunit:feet ccc(50000*thou); myunit:thou ddd(50*inch); myunit:inch eee(50*inch); myunit:feet fff(50*inch); // and then std::cout << aaa << std::endl; etc... ccc = static_cast<myunit::feed>(aaa); .. and all various variation I came very close to getting this to work, just had some issue with the names and symbols showd by the inch and feed unit has they would be displayed in kthou (because of scalling I guess) ;-) I read the doc many times but couldn't really grasp how to deal with scaled units, how they fit with based_units and units? Regards, Mario

1 0

Boost Users, Découvre le message de Veron...
by Badoo 09 Mar '12

09 Mar '12

Un message de Veron t'attend... L'expéditeur et le contenu seront visibles seulement par toi et tu peux le supprimer à tout moment. Tu peux aussi y répondre directement au travers du messenger. Pour découvrir le message, suis simplement ce lien: http://eu1.badoo.com/0272478031/in/hbnnNDOo1Ps/?lang_id=6&m=21&mid=4f5a1b87… D'autres personnes à proximité qui sont sur Badoo Seb (Meudon, France) Charlotte (Meudon, France) Nanou (Meudon, France) http://eu1.badoo.com/0272478031/in/hbnnNDOo1Ps/?lang_id=6&m=21&mid=4f5a1b87… Le lien ne fonctionne pas dans ce message ? Copie le dans la barre d'adresse de ton navigateur. Tu as reçu cet email suite à une requête de Veron auprès de notre système. S'il s'agit d'une erreur, ignore simplement cet email. La requête sera alors effacée du système. Merci, L'équipe Badoo Courrier automatique de Badoo suite à l'envoi d'un message à ton attention sur Badoo. Les réponses ne sont ni stockées, ni traitées. Si tu ne veux plus recevoir de messages de Badoo, fais-le nous savoir: http://eu1.badoo.com/impersonation.phtml?lang_id=6&mail_code=21&email=boost…

1 0

FW: [thread] debug output when using futures/promises
by Nathan Ridge 09 Mar '12

09 Mar '12

>> Maybe I left some traces in the past but I don't see this output on the >> latest revision >> >> Could you update the trunk and let me know on which revision you are >> getting this? > I got this with revision 77102. I will try with the latest revision. You're right, it was removed a few days ago in r77224. Thanks, Nate

1 0

[thread] debug output when using futures/promises
by Nathan Ridge 09 Mar '12

09 Mar '12

Hello, The following code, compiled with Boost trunk: #include <string> #include <boost/thread/future.hpp> int main() { boost::promise<std::string> p; boost::shared_future<std::string> f(p.get_future()); } Gives me the following output when I run it: 1334 0 1336 0 1347 0 1349 1 I have built Boost in release mode. What is causing this output? Can it be removed? Thanks, Nate

2 2

zip_iterator and std::tuple (tr1) on msvc10
by MM 08 Mar '12

08 Mar '12

Hi, this code compiles: #include <vector> #include <list> #include <algorithm> #include <boost/iterator/zip_iterator.hpp> #include <boost/tuple/tuple.hpp> int main() { const std::vector<int> vi(5u); const std::list<int> li(5u); std::for_each( boost::make_zip_iterator(boost::make_tuple(vi.begin(), li.begin()) ), boost::make_zip_iterator(boost::make_tuple(vi.end(), li.end() ) ), []( const boost::tuple<const int&, const int&>& tpl ) { tpl; } ); return 0; } but this code doesn't on msvc10: #include <tuple> #include <vector> #include <list> #include <algorithm> #include <boost/iterator/zip_iterator.hpp> int main() { const std::vector<int> vi(5u); const std::list<int> li(5u); std::for_each( boost::make_zip_iterator( std::make_tuple(vi.begin(), li.begin()) ), boost::make_zip_iterator( std::make_tuple(vi.end(), li.end() ) ), []( const std::tuple<const int&, const int&>& tpl ) { tpl; } ); return 0; } Is msvc10 std::tuple not std compliant, or not boost::zip_iterator-compliant, or should zip_iterator impl change? Rds, MM

1 0

[bind?] 'boost::bind' : ambiguous call to overloaded function -- when compiling for x64
by Igor R 08 Mar '12

08 Mar '12

Hello, My project builds well with MSVC10 for x86 platform. However, when I tried to build it for x64, I started to get the following strange error: 1>...cpp(42): error C2668: 'boost::bind' : ambiguous call to overloaded function 1> ...\boost\boost/bind/bind_mf_cc.hpp(43): could be 'boost::_bi::bind_t<R,F,L> boost::bind<void,MyImpl,const boost::system::error_code&,boost::shared_ptr<T>,boost::system::error_code>(R (__cdecl MyImpl::* )(B1),A1,A2)' <...> 1> ...\boost\boost/bind/bind_mf_cc.hpp(43): or 'boost::_bi::bind_t<R,F,L> boost::bind<void MyImpl,const boost::system::error_code&,boost::shared_ptr<T>,boost::system::error_code>(R (__cdecl MyImpl::* )(B1),A1,A2)' Note that the both variants are actually the same one. The source line that causes the error looks like this: io_service_.post(boost::bind(&MyImpl::func, someSharedPtr)); i.e. boost::bind name is fully qualified. Unfortunately, I can't reproduce this error in a "fresh" trivial project, so I realize that the problem most likely isn't in Bind, but somewhere in my project. The question is what could cause such a behavior? Did anyone encounter such an issue? Thanks.

1 1

boost includes
by bhatiaharsh 08 Mar '12

08 Mar '12

Hi, I am new to boost, just trying to use it for the first time. I have a test code which uses Boost and I am trying to get it running on my machine. But I get an error while compilation: In file included from /usr/include/boost/mpl/or.hpp:43:0, from /usr/include/boost/serialization/smart_cast.hpp:54, from /usr/include/boost/archive/detail/oserializer.hpp:41, from /usr/include/boost/archive/detail/interface_oarchive.hpp:23, from /usr/include/boost/archive/detail/common_oarchive.hpp:22, from /usr/include/boost/archive/basic_text_oarchive.hpp:32, from /usr/include/boost/archive/text_oarchive.hpp:31, from src/main.cc:1207: /usr/include/boost/mpl/aux_/include_preprocessed.hpp:37:90: fatal error: boost/mpl/aux_/preprocessed/gcc/||.hpp: No such file or directory compilation terminated. make[2]: *** [obj/debug/critpts.o] Error 1 This is the line 37 of file /usr/include/boost/mpl/aux_/include_preprocessed.hpp include BOOST_PP_STRINGIZE(boost/mpl/aux_/preprocessed/AUX778076_PREPROCESSED_HEADER) It looks like AUX778076_PREPROCESSED_HEADER is not defined correctly. Any ideas where I could go and check for this ? -- View this message in context: http://boost.2283326.n4.nabble.com/boost-includes-tp4454829p4454829.html Sent from the Boost - Users mailing list archive at Nabble.com.

3 3

BGL VA? (UNCLASSIFIED)
by Neiderer, Andrew M CIV (US) 08 Mar '12

08 Mar '12

Classification: UNCLASSIFIED Caveats: NONE Not a boost programming question exactly. I am mostly a visual analytics (VA) programmer using X3D to interact/navigate w/i a visualization. And for most of the past year learning/using BGL to build and traverse small graphs represention, e.g. terrorist networks, for information discovery. Is there just 1 existing parser (AT&T Graphviz DOT) for r/w from a text file? This format is quite good for examining graphs; and maybe it can do 3D position vectors. But just wondering if I should consider others for 3D display of networks, and for a visual analytics technology. Hope this q is appropriate, or maybe I should become more familiar with BGL first. Andrew M. Neiderer US Army Research Laboratory Classification: UNCLASSIFIED Caveats: NONE

2 1

Compiling Regex with BCB6 gives error in _epilog.h
by Woomla 08 Mar '12

08 Mar '12

When compiling Boosts Regex (1.33 and 1.49) with BCB6 I get an error in CBuilder6\include\stl\_epilog.h line 28: Declaration syntax error. The line reads: namespace _STLP_STD {}. What can I do to compile regex with BCG6?

1 0

[interprocess] compilation error in interprocess vector
by Andrew Schweitzer 08 Mar '12

08 Mar '12

I'm trying to use interprocess' containers. I get compilation errors when including the container header files. For example: #include <boost/interprocess/containers/vector.hpp> gives: g++ -I../../include -I"/home/schweitz/work/boost/boost_1_49_0" -O3 -Wall -c -fmessage-length=0 -std=c++0x -MMD -MP -MF"EmbeddedServiceProcessor.d" -MT"EmbeddedServiceProcessor.d" -o "EmbeddedServiceProcessor.o" "../EmbeddedServiceProcessor.cpp" In file included from /home/schweitz/work/boost/boost_1_49_0/boost/container/detail/iterators.hpp:27:0, from /home/schweitz/work/boost/boost_1_49_0/boost/container/vector.hpp:38, from /home/schweitz/work/boost/boost_1_49_0/boost/interprocess/containers/vector.hpp:19, from ../EmbeddedServiceProcessor.cpp:295: /home/schweitz/work/boost/boost_1_49_0/boost/container/detail/variadic_templates_tools.hpp:44:19: error: expected nested-name-specifier before ‘add_const_reference’ and so forth. Any suggestions? this is Ubuntu 11.10, and gcc -v reports: gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.6.1/lto-wrapper Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.6.1-9ubuntu3' --with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++,go --prefix=/usr --program-suffix=-4.6 --enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.6 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-plugin --enable-objc-gc --disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3) tx Andy

2 1

[wave] dependency tracking #include
by Brian Budge 07 Mar '12

07 Mar '12

Hi all - Image that I might be a masochist, and want to write my own cross-platform build system. I'd want to track dependencies and only rebuild the object files that have modified dependencies. Of course, I could write my own header parser, and manually track #defines and #includes and follow files, etc... but my thought was that a preprocessor already does all of this work. How hard would it be to tap wave for this kind of information? Am I barking up the wrong tree? Is there some other solution that would be better? Thanks, Brian

1 0

[Filesystem] Need to provide filesystem and system libraries to link
by Steve Smith 07 Mar '12

07 Mar '12

Hello, I'm upgrading my code from 1.42 to 1.49. Eventually I will upgrade from filesystem v2 to v3, but for now I'm stuck using v2. I noticed during my recompilation that code using filesystem no longer compiles unless I specify both the -lboost_filesystem and -lboost_system linker arguments; previously I only had to provide the -lboost_filesystem argument. I'm using g++ 4.6.2 on rhel6. I verified this by attempting to compile the file_size example that comes with boost. I was wondering if this is a necessary change due to the differences between 1.42 and 1.49 or if I'm doing something incorrectly. Thanks.

2 1

ANSI/ISO
by Mohsen Pahlevanzadeh 07 Mar '12

07 Mar '12

Dear all, I need to know which lib of boost were became ANSI/ISO. Yours, Mohsen.

1 0

[Boost.Test] Using boost::exception
by Ovanes Markarian 06 Mar '12

06 Mar '12

Hi! I think it might be a great feature if Boost.Test would be able to print diagnostic information saved in boost::exception. Actually my code havily relies on boost::exception. If one of my tests fail, I usually get nothing saying "std::exception occured" error message. But if Boost.Test could just catch boost::exception and print the default diagnostig info it would be a great help. Best Regards, Ovanes

5 7

Complex serach and replace in C++ string
by Claude 06 Mar '12

06 Mar '12

Hi! Is it possible search and replace or delete a character in a piece of string delimited by 2 positions found by the method find() (find() return position (size_t) and not an iterator) using some function of boost? -- View this message in context: http://boost.2283326.n4.nabble.com/Complex-serach-and-replace-in-C-string-t… Sent from the Boost - Users mailing list archive at Nabble.com.

3 3

Graphviz file I/O (UNCLASSIFIED)
by Neiderer, Andrew M CIV (US) 06 Mar '12

06 Mar '12

Classification: UNCLASSIFIED Caveats: NONE I try but have difficulty with compile/translate, execution errors :-( But maybe with use. I am trying to r/w Graphviz files. The following is result of "write_graphviz(std::cout,g,dp,std::string("id"));" Could someone tell me how/what to correct. Thank you. Classification: UNCLASSIFIED Caveats: NONE

2 1

Filesystem Library Bug
by Sam Hertz 06 Mar '12

06 Mar '12

Hi, I am having some trouble with the latest version of the Boost Filesystem library. The following causes a segmentation fault: boost::filesystem::create_directory(boost::filesystem::current_path()/"test"); boost::filesystem::remove_all(boost::filesystem::current_path()/"test"); It is difficult for me to debug since the call to remove_all dives into a library file. My system configuration is: Operating System: Ubuntu 11.10 Compiler: clang++ (I can reproduce the error with g++) Boost Version: 1.49.0 (compiled with clang++) Thanks, Sam

4 4

Graphviz I/O (UNCLASSIFIED)
by Neiderer, Andrew M CIV (US) 06 Mar '12

06 Mar '12

Classification: UNCLASSIFIED Caveats: NONE New and struggling with BGL, which IMO the best for graphs. I will keep at it. This should be a simple fix for r/w Graphviz example by Douglas Gregor... The errors in the typescript (attached) are the result of "write_graphviz(std::cout,g,dp,std::string("id"));" Could someone tell me how/what to correct. Thank you. Classification: UNCLASSIFIED Caveats: NONE

1 0

Aborting on Boost.Test check failure
by Jeremiah Willcock 06 Mar '12

06 Mar '12

Is there a way to force an abort() or some other kind of debugger-catchable event when a Boost.Test test case (such as a BOOST_CHECK) fails? Is there a function I can set a breakpoint on? I do not see anything like that in the documentation. I am running on Linux with gdb. -- Jeremiah Willcock

3 9

Boost.Generic sources?
by Nathan Ridge 05 Mar '12

05 Mar '12

I just read about the Boost.Generic library at https://github.com/boostcon/2011_presentations/raw/master/thu/Boost.Generic…. It looks amazing! I understand it's not fully complete, but are the sources available somewhere? Thanks, Nate.

2 5

Problem building boost MPI with Visual Studio 2010
by k m 05 Mar '12

05 Mar '12

Hi All I have installed openmpi in C:\Program Files\OpenMPI_v1.5.4-win32\ in an XP box and want to compile boost to produce graph-parallel library. But got the following error: The system cannot find the path specified. The system cannot find the path specified. The system cannot find the path specified. The system cannot find the path specified. MPI auto-detection failed: unknown wrapper compiler C:/Program Files/OpenMPI_v1. 5.4-win32/bin/mpic++.exe Please report this error to the Boost mailing list: http://www.boost.org You will need to manually configure MPI support. MPI launcher: mpirun -np when I ran in a Visual Studio 2010 command prompt: b2 --toolset=msvc-10.0 --build-type=complete architecture=x86 address-model=32 stage --debug-configuration I added the MPI config in boost_1_48_0\tools\build\v2\user-config.jam as below: using mpi : "C:/Program Files/OpenMPI_v1.5.4-win32/bin/mpic++.exe" ; Could anyone help on this? Gary

3 7

Boost msm
by keithzz 05 Mar '12

05 Mar '12

newbi question pleasee bare with me as Im struggling with this. I want to use boost msm state machine but i am having a hard time imagining how it works. Let say we only have 2 states (s1, s2) and to go from s1 to s2 you need event e1 to be fired and to bo back you need another one e2. e1 and e2 can only be fired from within s1 and s2 respectively. Now in main() I start by starting the statemachine (start()) then ill have a while loop that every 1 min will go back to the state machine but have to pick up from where it left.i.e. main() { MSM.start(); //start state machine while (a_condition) { ProcessInputsfromIO(); Go_backtoStatemachine(); //how can i do this? delay(1min) } MSM.stop(); } So basically when a state finishes executing, the statemachine will exit, then ill have a delay of 1 minutes, then the while loop will need to take me back to the state I was before I exit, or I think that's how we should implement a state machine. Is what I am asking for out of the ordinary? If yes then how do people implement a non-blocking state machine? if no, then how can I implement Go_backtoStatemachine()? -- View this message in context: http://boost.2283326.n4.nabble.com/Boost-msm-tp4444830p4444830.html Sent from the Boost - Users mailing list archive at Nabble.com.

4 4

regex: link issue on Visual Studio 11 (v17) x64
by Oleg Smolsky 05 Mar '12

05 Mar '12

2 2

Problem with thread
by Jothybasu Selvaraj 05 Mar '12

05 Mar '12

---------- Forwarded message ---------- From: Jothybasu Selvaraj <jothybasu(a)gmail.com> Date: Mon, Mar 5, 2012 at 10:08 AM Subject: Problem with thread To: boost-users(a)lists.boost.org Hi all, I am new to boost libs, I ma trying to use the threading capabilities of boost. I am using QtCreator. While building Ithe compiler always throw an "Instantiated from here" error. The error is from shared_mutex.hpp on line state_data const current_state=interlocked_compare_exchange(&state,new_state ,old_state); What could be the problem? Thanks -- Jothy -- Jothy

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Clang error with GIL: make_step_iterator invisible to locator.hpp
by Tom Vercauteren 05 Mar '12

05 Mar '12

Hi all, I am trying to compile with clang (svn version) a project that uses Boost GIL (1.49) (among other things). Currently it fails to compile and issues the following message: boost/gil/locator.hpp:267:14: error: call to function 'make_step_iterator' that is neither visible in the template definition nor found by argument-dependent lookup Loking at the code of locator.hpp, I indeed see the call to make_step_iterator but no include of step_iterator.hpp where make_step_iterator is defined. Replacing #include "pixel_iterator.hpp" by #include "step_iterator.hpp" at line 28 of locator.hpp seems to fix my issue with clang. What's a bit strange to me is that the same code compiles fine with gcc 4.5. Am I hitting a GIL bug, a clang bug or am I wrongly calling GIL? I haven't written a small self-contained test code yet but will try to do so in case the answer to my question isn't obvious. Best, Tom

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Graph Structural Information
by Nouf M. 05 Mar '12

05 Mar '12

Hello, I have two very huge graphs, I need to select one to work with. Both graphs have one node type and one edge type. Both also have the same semantic meaning. Therefore, my choice should depend on some structural characteristics (e.g. degree distribution)... I so that BGL can provide me with the degree distribution in a manual way... I have two questions: Is there some specific functions that I can call to give me all structural characteristics of a graph? If not, what do you recommend I should look for other than the degree distribution to make up my choice? I cannot make a random choice... Best regards, Nouf

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