- Boost-users - lists.preview.boost.org

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

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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 … [View More]

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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<… [View More]

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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() { … [View More] 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]' [View Less]

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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.

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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 … [View More]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 [View Less]

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[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 … [View More]

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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 … [View More]

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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.

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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?

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