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Re: [Boost-users] How do I get boost to work with vs.net 2005 ?
by Brian Braatz 24 Jun '05

24 Jun '05

I believe I can help. Lets say you have downloaded boost to the dir: C:\boost now if you CD into that dir- you will get something like the following files: 06/10/2005 10:50 AM <DIR> . 06/10/2005 10:50 AM <DIR> .. 05/26/2005 01:48 AM <DIR> bin 06/16/2005 02:27 PM <DIR> boost 02/04/2005 04:09 PM 499 boost-build.jam 02/04/2005 04:09 PM 675 boost.css 02/04/2005 04:09 PM 6,897 boost.png 02/21/2005 11:10 AM <DIR> CVS 02/18/2005 03:46 PM <DIR> doc 02/04/2005 04:09 PM 3,558 google_logo_40wht.png 02/04/2005 04:09 PM 49,603 index.htm 02/04/2005 04:09 PM 9,406 Jamfile 02/04/2005 04:09 PM 882 Jamfile.v2 02/04/2005 04:09 PM 450 Jamrules 05/26/2005 01:04 AM <DIR> libs 02/04/2005 04:09 PM 1,361 LICENSE_1_0.txt 02/18/2005 03:47 PM <DIR> more 02/18/2005 03:47 PM <DIR> people (abbreviated) Now using my example dirs- some important dirs to be aware of: C:\boost\boost - the libraries themselves are here C:\boost\libs - look here for the documentation (html) files for a given library since the libs are in c:\boost you need to do the following: visual studio- (menu) view-solution explorer then in the solution explorer, right click on the project name select "Properties" from the menu click on the "C\C++" select on the left click on the "General" item below this on the right you will see "Additional Include Directories" type in (in our case above) C:\boost the cute thing about this is (recall there is a boost dir below C:\boost) you can now do a #include with the sub dir of boost in the string i.e. #include <boost/smart_ptr.hpp> You can TEST if the "Additional Included Directories" setting is CORRECT- by doing the following: (set the setting as described above) move your cursor over #include <boost/smart_ptr.hpp> right click- on that menu select "Open Document <boost/smart_ptr.hpp>" IF that succeeds, then you have setup the #include directories correctly- if not then you put the wrong value in "Additional Included Directories" HOPE THAT HELPS Brian :) > -----Original Message----- > From: boost-users-bounces(a)lists.boost.org [mailto:boost-users- > bounces(a)lists.boost.org] On Behalf Of Mart marvin > Sent: Friday, June 24, 2005 3:13 PM > To: boost-users(a)lists.boost.org > Subject: Re: [Boost-users] How do I get boost to work with vs.net 2005 ? > > It didn't work! > > I followed the directions to the letter. Is it a bug with VS.NET 2005 > beta? > Here's the message I got: > > Cannot open include file: 'boost\smart_ptr.h': No such file or directory > > Here is my code: > > #include "stdafx.h" > #include "x.h" > #include <boost\smart_ptr.h> > > int main() > { > x& p = *new x; > delete &p; > return 0; > } > > Please help... I'm desperate to try Boost. Looked at the documentation > and > I'm drooling to play with it. > > >From: "Pablo Aguilar" <pablo.aguilar(a)gmail.com> > >Reply-To: boost-users(a)lists.boost.org > >To: boost-users(a)lists.boost.org > >Subject: Re: [Boost-users] How do I get boost to work with vs.net 2005 ? > >Date: Fri, 24 Jun 2005 14:10:36 -0700 > > > >Open VS.NET > > >From the "Tools" menu, select "Options" > >In the tree to the left, open "Projects & Solutions" and select VC++ > >Directories > > >From the drop down list labelled "Show directories for:" select > "Include > >files" > >Add the boost root directory (wherever you decompressed the boost > >installation) to that list. > > > >HTH > > > > > >Pablo > > > > >I downloaded the executable from sourceforge, but I'm at a loss how to > >get > > > the libraries to be recognized by VS.NET. I googled but nothing that > > > works > > > turned up. I'm desperate to try and play with the boost libraries > and > >am > > > eager to get started with them. Can someone describe it step by step > > > command by command? > > > > > > I'm on Win2k Pro. > > > > > > Thanks in advance. > > > > > > > >_______________________________________________ > >Boost-users mailing list > >Boost-users(a)lists.boost.org > >http://lists.boost.org/mailman/listinfo.cgi/boost-users > > _________________________________________________________________ > Is your PC infected? Get a FREE online computer virus scan from McAfee(r) > Security. http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963 >

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Re: [Boost-users] How do I get boost to work with vs.net 2005 ?
by Sohail Somani 24 Jun '05

24 Jun '05

> -----Original Message----- > From: boost-users-bounces(a)lists.boost.org > [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Mart marvin > Sent: Friday, June 24, 2005 12:20 PM > To: boost-users(a)lists.boost.org > Subject: [Boost-users] How do I get boost to work with vs.net 2005 ? > > > I downloaded the executable from sourceforge, but I'm at a > loss how to get > the libraries to be recognized by VS.NET. I googled but > nothing that works > turned up. I'm desperate to try and play with the boost > libraries and am > eager to get started with them. Can someone describe it step by step > command by command? http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl?Installin gBoost Doesn't get much better than that.

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Re: [Boost-users] Boost-users Digest, Vol 588, Issue 2
by Frank Hess 24 Jun '05

24 Jun '05

On Thursday 23 June 2005 05:41 pm, boost-users-request(a)lists.boost.org wrote: > Message: 9 > Date: Thu, 23 Jun 2005 17:45:25 +0100 > From: Paul Johnson <gt54-boost(a)cyconix.com> > Subject: [Boost-users] Replacing a reference with a shared_ptr? > To: boost-users(a)lists.boost.org > Message-ID: <42BAE725.2080907(a)cyconix.com> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > I'm deriving from a base class in a library I use (in other words, I > > can't change it), and this class declares: > > virtual string& getFilename(void) const; > > virtual void setFilename(const string&); > > The base class itself doesn't declare a member to store the file name; > it just ignores 'setFilename', and returns an empty string for > 'getFilename'. > > I'd like to implement these routines, but I don't want to have a string > reference in my derived class. If possible, I'd like to use a > shared_ptr<string>. However, I can't see a simple way to do this. Why are you bothering with pointers or references? Why can't you just put a string in your class? string myString; virtual string& getFilename(void) const {return myString;} virtual void setFilename(const string&) {myString = string;} -- Frank

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shared_ptr misuse?
by Jason House 23 Jun '05

23 Jun '05

I have the contents of a shared pointer getting corrupted by a default constructor of another object. My best guess as to how this could be happening is that I am using references to shared pointers for coding convenience. Is it possible for code like the following to cause a problem? { boost::shared_ptr<my_class> &x = a.b.c.d.e.f.g; if (x.get() == NULL) { pointer_empty(); } else { other_actions(x->get()); } } PS: I found this in a header file (#define BOOST_VERSION 103000)

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Replacing a reference with a shared_ptr?
by Paul Johnson 23 Jun '05

23 Jun '05

I'm deriving from a base class in a library I use (in other words, I can't change it), and this class declares: > virtual string& getFilename(void) const; > virtual void setFilename(const string&); The base class itself doesn't declare a member to store the file name; it just ignores 'setFilename', and returns an empty string for 'getFilename'. I'd like to implement these routines, but I don't want to have a string reference in my derived class. If possible, I'd like to use a shared_ptr<string>. However, I can't see a simple way to do this. The original string is supplied by me to the library, which eventually calls my 'setFilename'. So, I could start with a shared_ptr, and use operator() to supply the library with a reference to the string. However, when the string& gets back to my 'setFilename', there's no obvious way to get back to the original shared_ptr. Have I missed something? Is there a clean way to implement this with shared_ptr<string>? Thanks.

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python like generators in C++
by Paul Elliott 23 Jun '05

23 Jun '05

I consider the following equation: Threads + some template code = iterators that act like python generators in C++! Has anyone implemented this in boost? Thank You -- Paul Elliott 1(512)837-1096 pelliott(a)io.com PMB 181, 11900 Metric Blvd Suite J http://www.io.com/~pelliott/pme/ Austin TX 78758-3117

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1.32 installation: where is the smart_ptr lib?
by Paul Johnson 23 Jun '05

23 Jun '05

Sorry for the dumb question... Just installed boost following the instructions on boost.org, and I can't find the smart_ptr library. I downloaded the 1.32 .bz file, and bjam, and installed on Linux/RHEL4. I've now got 189 boost libraries in /usr/local/lib, and 32 in /usr/lib. However, the only base libraries seem to be date_time, filesystem, prg_exec_monitor, program_options, python, regex, serialisation, signals, test_exec_monitor, thread, unit_test_framework, and wserialisation, some of which aren't even listed on the libraries page at boost.org. Where's smart_ptr? None of these libraries appear to have it. The smart_ptr headers are in /usr/local/include/boost-1_32/boost, as expected (but why 2 levels down? Surely I'm not expected to #include <boost-1_32/boost/xx.hpp??) Cheers.

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bcp error
by Ronald Sipkema 23 Jun '05

23 Jun '05

hi, when trying to use bcp as follows: "bcp --list build" I get the following error: **** exception(205): std::runtime_error: Bad file name: ../boost.css Any idea what's happening? Other module lists )for example regex) work just fine. --Ronald

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date_time problem: where are fractional seconds?
by Serge Skorokhodov 23 Jun '05

23 Jun '05

Hi, The following code (boost 1.32, MSVC.NET 2003): ptime pt = from_iso_string("20030912T211733.01204"); cout << pt << endl; cout << to_simple_string(pt) << endl; cout << to_iso_extended_string(pt) << endl; cout << to_iso_string(pt) << endl; cout << pt.time_of_day().fractional_seconds() << endl; time_duration td = pt.time_of_day(); cout << to_iso_string(td) << endl; cout << to_simple_string(td) << endl; cout << td.fractional_seconds() << endl; yealds: 2003-Sep-12 21:17:33 2003-Sep-12 21:17:33 2003-09-12T21:17:33 20030912T211733 0 211733 21:17:33 0 Is the fractional part of time (.01204) absent by design? I failed to find it out from the documentation? Is there a workaround? TIA -- Serge

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[bind / lambda] binding a factory funtion instead of an value
by Bertolt Mildner 23 Jun '05

23 Jun '05

Lets say i need a functor of type typedef boost::function1<Ret, Arg1> Functor; and i have a function Ret Foo(Arg1 a, Arg2 b); Creating a Functor object is easy if i have a Arg2 object Arg2 arg2; Functor f(boost::bind<Ret>(&Foo, _1, arg2); But what if i want to create the Arg2 object in the functor when it is used? Like i have a function Arg2 CreateArg2(); and i don't want Functor f(boost::bind<Ret>(&Foo, _1, CreateArg2()); but something like Functor f(boost::bind<Ret>(&Foo, _1, &CreateArg2); so that f(arg1) = Foo(arg1, CreateArg2()); I have a vague feeling that lambda might have a solution to this, but i don't know how! Bertolt

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[BGL] overlaying a graph-like structure
by martin f krafft 22 Jun '05

22 Jun '05

I am looking at the possibility to use BGL for the structural representation of an artificial neural network: nodes would be neurons, edges would be synapses. The advantage for me would be that I don't have to worry about complexity of the graph structure. For this to work, I need to be able to strap behaviour and data onto the edges and nodes. The bundled properties interfaces seems to be a good way to do this, but there is something fundamental that I am apparently not understanding: What is an edge descriptor, what is a vertex descriptor? From the code: typedef typename boost::ct_if_t<is_rand_access, std::size_t, vertex_ptr>::type vertex_descriptor; vertex descriptors are indices or pointers. And typedef detail::edge_desc_impl<directed_category, vertex_descriptor> edge_descriptor; and edge is actually a struct containing source and target vertex, and a property pointer (void*). There does not seem to be a way to get the property object from an edge descriptor without casting to the expected type. Thus, vertex and edge descriptors are really just minimal and provide absolutely no way to access the relevant data through their interface. Instead, BGL expects people to have access to the containing graph object, to be able to call functions like target(), out_edges(), or operator[] to get at the downstream vertex/edge, or a vertex'/edge's properties. In the context of my application, I know have two options: adopt the graph-centric perspective of BGL, in which the graph object is needed to answer any questions about the graph, even about single components therein, or to strap a layer on top of all this to return to proper object encapsulation: - where a node knows about its incident edges - where an edge knows about its source and target vertices - where both give access to the associated properties. If I wanted to go the latter way, I'd have to store an additional 8 bytes (descriptor + graph references) with each object, which is just a waste if you ask me. However, there seems to be no other way as I cannot derive from vertex/edge descriptors. Does anyone have any experience with folding BGL into an existing graph-like structure? My ideal solution would be my neuron and synapse classes derived from the vertex and edge descriptors, such that I can treat them like components of the graph as well as neural components. From looking at the LEDA stuff, I guess the way to do this is to modify the graph traits to replace edge and node descriptors with custom classes. If I take care to model the behaviour of the existing edge and node descriptors wrt their interfaces, I shouldn't actually need to override the public Graph API, right? Is it sensible to derive from detail::edge_desc_impl, or should detail::* stuff not be touched outside of BGL code? Thanks for any comments, thoughts, suggestions, pointers. -- martin; (greetings from the heart of the sun.) \____ echo mailto: !#^."<*>"|tr "<*> mailto:" net@madduck invalid/expired pgp subkeys? use subkeys.pgp.net as keyserver! spamtraps: madduck.bogus(a)madduck.net "i have smoked pot. it is a stupid business, like masturbation." -- thomas pynchon

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[BGL] adding behaviour to nodes and edges
by martin f krafft 22 Jun '05

22 Jun '05

I would like my nodes and edges to have behaviours. Bundled properties -- the method to attach struct instances to nodes and edges -- seems like the way to go. However, if that is the suggested method, then "bundled properties" is somewhat of a misnomer. What's the suggested way to attach behaviour to nodes and edges? I.e. I'd love to be able to iterate through vertices(G) with std::for_each and have it call a member function for each vertex. -- martin; (greetings from the heart of the sun.) \____ echo mailto: !#^."<*>"|tr "<*> mailto:" net@madduck invalid/expired pgp subkeys? use subkeys.pgp.net as keyserver! spamtraps: madduck.bogus(a)madduck.net the english take english for granted. but if we explore its paradoxes, we find that quicksand can work slowly.

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Problem using edge_descriptors as indices into an external property
by Andrea Olgiati 22 Jun '05

22 Jun '05

Folks, I've encountered a problem whilst compiling the following program, and I can't quite figure out why it shouldn't work. Whilst compiling usign boost 1.32.0 and gcc 3.3.4, I get cannot convert `boost::detail::edge_desc_impl<boost::bidirectional_tag, size_t>' to `int' for argument `2' to `const T& get(const T*, int) [with T = int]' I believe this is saying that edge descriptors cannot be used as indices into a property map (that is, "wm"). Why is this different from vertex descriptors, which are accepted as indices into "p" and "dist"? Any help appreciated. Thanks, Andrea #include <boost/graph/graph_traits.hpp> #include <boost/graph/adjacency_list.hpp> #include <boost/graph/bellman_ford_shortest_paths.hpp> int main () { typedef boost::adjacency_list < boost::vecS, boost::vecS, boost::bidirectionalS > Graph; Graph G; std::vector < int > wm; std::vector < boost::graph_traits < Graph >::vertex_descriptor > p; std::vector < int > dist; boost::bellman_ford_shortest_paths (G, boost::num_vertices(G), &wm[0], &p[0], &dist[0], boost::closed_plus < int >(), std::less < int >(), boost::default_bellman_visitor ()); return 0; }

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[signal] custom connect/disconnect
by John Maguire 22 Jun '05

22 Jun '05

Hi all, I have a program where I have several signals, and I want an action to be taken when connect/disconnect occurs on them. I would prefer to avoid wrapping the calls, since it would reduce composibility. I would imagine that this isn't the first time that such a requirement has been made of signals, so I was wondering if someone could point me towards the standard solution for this? Regards, John

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[BGL] Question on prim_minimum_spanning_tree
by Wang Johny 22 Jun '05

22 Jun '05

Hi, there I am a new user of boost (in particular BGL). For my project, I am using the function of "prim_minimum_spanning_tree" to construct the minimum spanning tree. But I found a strange problem and hope to get your help. Specifically, I am following the sample code "prim-example.cpp" (using MSVC), with one modification to the weight property. That is, I am defining the weight property as property < edge_weight_t, float > not the original one property < edge_weight_t, int > And I found by doing so, the function of "prim_minimum_spanning_tree" return wrong results (no edge is returned at all). But the original version using "property < edge_weight_t, int >" definition works well. So I am wondering if I missed something to make user-defined weitgh property work for this function. Any suggestion is welcome. Thank you very much. Best regards, Shenai Problematic code: /////////////////////////////////////////////////////////////////////////////////////////////////// typedef adjacency_list < vecS, vecS, undirectedS, property<vertex_distance_t, int>, property < edge_weight_t, float > > Graph; typedef std::pair < int, int >E; const int num_nodes = 5; E edges[] = { E(0, 2), E(1, 1), E(1, 3), E(1, 4), E(2, 1), E(2, 3), E(3, 4), E(4, 0) }; float weights[] = { 1.0f, 2.0f, 1.0f, 2.0f, 7.0f, 3.0f, 1.0f, 1.0f }; Graph g(num_nodes); property_map<Graph, edge_weight_t>::type weightmap = get(edge_weight, g); for (std::size_t j = 0; j < sizeof(edges) / sizeof(E); ++j) { graph_traits<Graph>::edge_descriptor e; bool inserted; tie(e, inserted) = add_edge(edges[j].first, edges[j].second, g); weightmap[e] = weights[j]; } std::vector < graph_traits < Graph >::vertex_descriptor > p(num_vertices(g)); property_map<Graph, vertex_distance_t>::type distance = get(vertex_distance, g); property_map<Graph, vertex_index_t>::type indexmap = get(vertex_index, g); prim_minimum_spanning_tree(g, *vertices(g).first, &p[0], distance, weightmap, indexmap, default_dijkstra_visitor()); for (std::size_t i = 0; i != p.size(); ++i){ if (p[i] != i){ TRACE("I am here"); } } /////////////////////////////////////////////////////////////////////////////////////////////////// --------------------------------- Do You Yahoo!? 150万曲MP3疯狂搜，带您闯入音乐殿堂美女明星应有尽有，搜遍美图、艳图和酷图 1G就是1000兆，雅虎电邮自助扩容！

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style: overloading vs default parameters
by Noel Yap 22 Jun '05

22 Jun '05

Is there any particular reason why at least some boost code uses default parameters. IME, I've found the using overloading is preferable. For example, when using boost::bind, one would have to explicitly give the default parameters whereas one wouldn't if overloading were used. Also, using overloading rather than default parameters when a new function interface is needed can potentially break less client code (eg code that uses the type of the function won't break if overloading were used). Given this, I'd like to hear some arguments for using default arguments over overloading (outside of constructors, of course, where one may not have much of a choice). Thanks, Noel

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boost building question
by H 22 Jun '05

22 Jun '05

Hi, In the Jamfile help it says: --builddir=DIR Build in this location instead of building within the distribution tree. Recomended! Does this mean the build is not the same as the install, i.e. while building, files are being stored somewhere and removed after final installation? Thank you, H.

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Boost.Function: How does the template param mechanism work?
by Brian Braatz 21 Jun '05

21 Jun '05

My question is, given: boost::function< int (char, long) > func(&f); how is it possible to pass the (char,long)? (I tried to receive this in a template as a single template param, or as three , but neither worked) I have been studying the headers, but the indirection used (FTSE :) ) is making it hard for me to figure this one out. The reason I am asking I is I am trying to clean up the syntax of some template params and I would like to use this technique. i.e. I would like to write: struct A {}; struct B {}; struct C {}; struct D {}; struct E {}; struct F {}; typedef MyThingdef< (A,B), (C,D), (E,F) > splat; instead of typedef MyThingdef< A,B, C,D, E,F > splat; Any direction on things to research or dig into appreciated. Thanks Brian

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Serialization truncation?: xml_oarchive, ostringstream vs. ofstream
by Benjamin.Sternlieb＠ubs.com 21 Jun '05

21 Jun '05

Hi, I was trying out boost serialization and ran into a snag. If I serialize the same object onto two xml_oarchives, one constructed with a ostringstream and one constructed with an ofstream, I get differing results - the file based xml is well formed, but the string based xml is missing its final closing tag. Here is the generating code snippet: // now serialize ostringstream os; boost::archive::xml_oarchive ar(os); ofstream ofs("/home/sternlbe/boo.xml"); boost::archive::xml_oarchive ar2(ofs); Portfolio& port = *p; ar << BOOST_SERIALIZATION_NVP(port); ar2 << BOOST_SERIALIZATION_NVP(port); string s = os.str(); LOG_DEBUG(logger) << "Xml string: \n" << s; For the file output, I get the (correct) result: <?xml version="1.0" encoding="UTF-8" standalone="yes" ?> <!DOCTYPE boost_serialization> <boost_serialization signature="serialization::archive" version="3"> <port class_id="0" tracking_level="1" version="0" object_id="_0"> <m_id>2124433</m_id> <m_name>This is a stub!</m_name> <m_isLoaded>0</m_isLoaded> </port> </boost_serialization> However, the string result is missing the final line (closing tag): <?xml version="1.0" encoding="UTF-8" standalone="yes" ?> <!DOCTYPE boost_serialization> <boost_serialization signature="serialization::archive" version="3"> <port class_id="0" tracking_level="1" version="0" object_id="_0"> <m_id>2124433</m_id> <m_name>This is a stub!</m_name> <m_isLoaded>0</m_isLoaded> </port> Any thoughts? Thanks in advance, Ben Visit our website at http://www.ubs.com This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. E-mail transmission cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message which arise as a result of e-mail transmission. If verification is required please request a hard-copy version. This message is provided for informational purposes and should not be construed as a solicitation or offer to buy or sell any securities or related financial instruments.

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boost log and vc 7
by Oliver Schoenborn 21 Jun '05

21 Jun '05

Hi, I am trying to create a dll for boost log v1.33(ie a dll containing code compiled from functions.cpp, log.cpp and log_manager.cpp) using VC++ 7.1 on WinXP. I get the same error whether I do it from VisualStudio or using bjam. The bjam file is : dll libboost_log : functions.cpp log.cpp log_manager.cpp : <include>c:/Boost/include/boost-1_32 <include>../../include ; and the vc-Link fails with the message that it "cannot open file 'boost_log-vc71-mt-gd-1_32.lib'". I have *no* idea where or how vc-Link comes to the conclusion that it needs that lib file. Any ideas? Thanks, Oliver p.s. The output from bjam session is: $ bjam ...patience... ...found 310 targets... ...updating 2 targets... vc-Link libboost_log.dll\vc-7_1\debug\threading-multi\libboost_log.dll libboost_log.dll\vc-7_1\debug\threading-multi\libboost_log.lib LINK : fatal error LNK1104: cannot open file 'boost_log-vc71-mt-gd-1_32.lib' CALL "C:\Program Files\Microsoft Visual Studio .NET 2003\VC7\bin\VCVARS32.BAT" >nul "C:\Program Files\Microsoft Visual Studio .NET 2003\VC7\bin\link" /nologo /INCREMENTAL:NO /DEBUG /DLL /subsystem:console /out:"libboost_log.dll\vc-7_1\debug\threading-multi\libboost_log.dll" /IMPLIB:"libboost_log.dll\vc-7_1\debug\threading-multi\libboost_log.lib" @"libboost_log.dll\vc-7_1\debug\threading-multi\libboost_log.CMD" ...failed vc-Link libboost_log.dll\vc-7_1\debug\threading-multi\libboost_log.dll libboost_log.dll\vc-7_1\debug\threading-multi\libboost_log.lib... ...failed updating 2 targets... --------------------------------------------- Oliver Schoenborn Consultant, Modelling & Simulation Greenley & Associates Inc. 5 Corvus Court Ottawa, ON K2E 7Z4 Canada D: (613) 247-0342 x217 C: (613) 371-4773 F: (613) 225-4281 www.greenley.ca <http://www.greenley.ca/>

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Re: [Boost-users] Reusing indexing base from multi_array_ref
by Sohail Somani 20 Jun '05

20 Jun '05

I should be slightly more careful, version without accesses below: #include <boost/multi_array.hpp> int main() { typedef boost::multi_array<double, 2> array_type; typedef boost::multi_array_ref<double,2> array_type_ref; typedef array_type::index_range range; typedef boost::multi_array_types::extent_range extent_range; array_type A(boost::extents[extent_range(1,4)][extent_range(1,10)]); // [1,4),[1,10) A[3][9]=95; array_type::array_view<1>::type f = A[boost::indices[range()][9]]; assert(f[2]==A[3][9]); // Would like to have assert(f[3]==A[3][9]). f.reindex(1); assert(f[3]==A[3][9]); // Do I *have* to reindex in this way? } Thanks.

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Reusing indexing base from multi_array_ref
by Sohail Somani 20 Jun '05

20 Jun '05

Hi, Any comments? #include <iostream> #include <boost/multi_array.hpp> int main() { using std::cout; using std::endl; typedef boost::multi_array<double, 2> array_type; typedef boost::multi_array_ref<double,2> array_type_ref; typedef array_type::index_range range; typedef boost::multi_array_types::extent_range extent_range; array_type A(boost::extents[extent_range(1,4)][extent_range(1,10)]); // 3x9 A[4][2]=95; array_type::array_view<1>::type f = A[boost::indices[range()][2]]; assert(f[3]==A[4][2]); // Would like to have assert(f[3]==A[4][2]). f.reindex(1); assert(f[4]==A[4][2]); // Do I *have* to reindex in this way? What if the indexing base gets more complicated? }

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Is it possible to use smart pointer w/ boost.multiarray or bind lapack/blas w/ boost.multiarray???
by Jack Nguyen 20 Jun '05

20 Jun '05

Any pointer/link is appreciated dat

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Boost String Algorithms Library Questions
by J Liu 20 Jun '05

20 Jun '05

Hi, I am using boost 1.32 with msvc 6. When I run the string example in the package, I keep getting this kind of errors: boost.cpp C:\dev\RWREPL~1\YUKON-~1\boost_1_32_0\boost/algorithm/string/yes_no_type.hpp(22) : error C2265: '<Unknown>' : reference to a zero-sized array is illegal C:\dev\RWREPL~1\YUKON-~1\boost_1_32_0\boost/algorithm/string/yes_no_type.hpp(23) : see reference to class template instantiation 'boost::algorithm::size_descriptor<I>' being compiled C:\dev\RWREPL~1\YUKON-~1\boost_1_32_0\boost/algorithm/string/detail/collection_traits.hpp(312) : error C2039: 'value_type' : is not a member of '`global namespace'' C:\dev\RWREPL~1\YUKON-~1\boost_1_32_0\boost/algorithm/string/detail/collection_traits.hpp(323) : see reference to class template instantiation 'detail::array_traits<T>' being compiled C:\dev\RWREPL~1\YUKON-~1\boost_1_32_0\boost/algorithm/string/detail/collection_traits.hpp(312) : error C2146: syntax error : missing ';' before identifier 'value_type' C:\dev\RWREPL~1\YUKON-~1\boost_1_32_0\boost/algorithm/string/detail/collection_traits.hpp(323) : see reference to class template instantiation 'detail::array_traits<T>' being compiled C:\dev\RWREPL~1\YUKON-~1\boost_1_32_0\boost/algorithm/string/detail/collection_traits.hpp(312) : error C2868: 'value_type' : illegal syntax for using-declaration; expected qualified-name C:\dev\RWREPL~1\YUKON-~1\boost_1_32_0\boost/algorithm/string/detail/collection_traits.hpp(323) : see reference to class template instantiation 'detail::array_traits<T>' being compiled C:\dev\RWREPL~1\YUKON-~1\boost_1_32_0\boost/algorithm/string/detail/collection_traits.hpp(314) : error C2039: 'iterator' : is not a member of '`global namespace'' C:\dev\RWREPL~1\YUKON-~1\boost_1_32_0\boost/algorithm/string/detail/collection_traits.hpp(323) : see reference to class template instantiation 'detail::array_traits<T>' being compiled C:\dev\RWREPL~1\YUKON-~1\boost_1_32_0\boost/algorithm/string/detail/collection_traits.hpp(314) : error C2146: syntax error : missing ';' before identifier 'iterator' ............... Could anybody tell me what the problem is? BTW, I have no problem using the date time lib. Thanks a lot! J.L

2 1

Re: [Boost-users] Aborting a Boost.Thread
by Foster, Gareth 20 Jun '05

20 Jun '05

> > Does GNOME have this, too? The FM is written with gtkmm. > > Something like: > > http://developer.gnome.org/doc/API/gnome-vfs/ > > But it's C and I have no idea if C++ wrapper is present or not. > Try http://gtkmm.org/ - look up Gnome::Vfs, there are C++ wrappers for all the Gnome/GTK+ stuff there. Gaz

2 1

Re: [Boost-users] Tokenizer Question
by Victor A. Wagner Jr. 20 Jun '05

20 Jun '05

At 19:19 2005-06-11, you wrote: > > for tokenizing on whitespace, simple stream input (>>) to a > > std::string suffices. > >My own tokenizer does just that--and puts the tokens into a deque. > > > IMO, it's hardly worth troubling yourself with a tokenizer > > for whitespace. > >Well, not really. When parsing line-oriented output and semi-known >structured lines it's handy to be able to sometimes work with a line's >tokens as if they were in a vector or deque. string yourline; istringstream is(yourline); deque<string> yourvec((istream_iterator<std::string>(is)), istream_iterator<std::string>()); voila, a deque it would be interesting to profile that against the hypothetical indexable tokenizer. >In fact, I was going to add a suggestion that the tokenizer also have the [] >operator so that the individual tokens could be addressed as tok[1], etc. > >-Tom > >_______________________________________________ >Boost-users mailing list >Boost-users(a)lists.boost.org >http://lists.boost.org/mailman/listinfo.cgi/boost-users Victor A. Wagner Jr. http://rudbek.com The five most dangerous words in the English language: "There oughta be a law"

6 11

Aborting a Boost.Thread
by Matthias Kaeppler 20 Jun '05

20 Jun '05

Hello, I am currently working on a filemanager for the Linux operating system, and I'm currently thinking about how to implement copying operations, such that 1. The GUI won't be blocked when operating on files 2. File operations can be cancelled at any time I thought about using Boost.Thread to run all the copy operations (which will be performed by Boost.Filesystem). However, I'm not quite sure how to handle this situation: Say copying a huge file, maybe 1GB+, is in progress. The progress will be displayed in a dialog window, as usual. Now the user decides that he wants to stop the copy operation, and clicks a cancel button. Now what do I do? The only means to terminate a thread that I know of is: 1. Killsignal it (I don't think boost supports it, since it's probably highly platform dependent) 2. Check for a terminate flag once in a while and return from the method once it is set. But how am I supposed to do the latter? The copy function doesn't return until it's finished right? So I can't check for a condition, because the copy-thread itself is blocked until it's done. I'm completely stuck here, help greatly appreciated. Cheers, Matthias -- Matthias Kaeppler

3 4

Re: [Boost-users] Serialization problem in a shared library
by Tapio Vuorinen (JO/LMF) 20 Jun '05

20 Jun '05

Hi, On Sat, 2005-06-18 at 06:24, Robert Ramey wrote: >I believe that the next releae of boost - version 1.33 - will address this > problem. > Thanks for the answer. If the CVS already contains the required bugfixes for the problem could you please list the files which I need to merge into our copy of Boost to get the important bugfixes, the shared-library fixes, so that I do not break too much the existing code? Do the bugfixes depend on other Boost libraries or is it only the serialization library I need to fix? By the way, when the next version (1.33.0) will be released? Thanks! Tapio Vuorinen

1 0

Using filesystem.path on OS/390
by Tom Quarendon 19 Jun '05

19 Jun '05

In the filesystem rationale documentation there are references to the need and desire to represent paths on OS/390. However I can find no documentation about how this is achieved. Does the filesystem path class support OS/390 paths such as the syntax for PDSE members or DDnames? If so are there some examples? Many thanks. Tom Quarendon.

2 1

Spirit inserting values into map
by Leon Mergen 19 Jun '05

19 Jun '05

Hello, First of all, I love spirit. I've started using it yesterday and I cannot believe how easy it is. At the moment, I'm trying to parse digits that are supposed to go into a std::map < unsigned int, bool >. On a certain part, if a digits matches, the value /always/ needs to be true. Now, I'm trying to figure out how to statically set the std::map < unsigned int, bool>::value_type that Spirit allows you to assign values to; especially, how can I define that for a certain match, the ->second part should be true, instead of assigning it based on a match of the grammar ? I wasn't able to find this in the manual. I hope I'm making sense... :) Thanks in advance for any responses. Regards, Leon Mergen

1 0

Boost.Iostreams: patch for putback
by Takeshi Mouri 19 Jun '05

19 Jun '05

Hello, I found a trivial mistake in boost/iostreams/read.hpp of current CVS HEAD version. So, I report it. Thanks Takeshi Mouri *** read.hpp.orig Mon May 30 16:30:27 2005 --- read.hpp Sun Jun 19 23:42:40 2005 *************** *** 158,164 **** { // gcc 2.95 needs namespace qualification for char_traits. typedef typename char_type_of<T>::type char_type; typedef iostreams::char_traits<char_type> traits_type; ! return !traits_type::is_eof(t.sputbackc()); } }; --- 158,164 ---- { // gcc 2.95 needs namespace qualification for char_traits. typedef typename char_type_of<T>::type char_type; typedef iostreams::char_traits<char_type> traits_type; ! return !traits_type::is_eof(t.sputbackc(c)); } };

2 1

lexical_cast update + Boost.Test question
by Terje Slettebø 19 Jun '05

19 Jun '05

Hi. lexical_cast has now been updated in the CVS, with the following, as has been reported as bugs or suggested improvements: - Fixed so it doesn't trim any whitespace when converting (it used to throw on " 123" -> int, but not on "123 " -> int, which was inconsistent). - Fixed reversed bad_lexical_cast constructor arguments. - lexical_cast now uses pass-by-const reference. For compilers lacking support for partial specialisation of class templates (like MSVC 6), it falls back on pass-by-value. Sorry for the late update. It's been quite busy at work lately, so it's been hard to concentrate on non-work projects, but I'm now more on top of things. I'll read up on any lexical_cast-related postings, and can make subsequent updates, should it be desired. I'll also check up the results after the next regression test run, to see if there are any remaining issues. The changes are of course done in cooperation with Kevlin. It has been tested on Intel C++ 7.1, MSVC 2005 Final Beta, g++ 3.4 and Borland C++ Builder X, and all tests pass there. I get errors (from Boost.Test) when trying to run the test on MSVC 6, but testing lexical_cast by itself seems to work. Might Boost.Test have a problem with MSVC 6? By the way, I don't see the changes using the Boost ViewCVS, but it's listed e.g. with "log". Are the ViewCVS results cached, somehow, or may the commit have ended up on some other place than the trunk? I did make sure to check out the trunk, before commit. Regards, Terje

3 3

Serialization and BGL
by Jean-Noël Rivasseau 19 Jun '05

19 Jun '05

Hello, I was wondering if one could use Boost serialization library with the Boost Graph Library. Specifically, if one my class holds a graph (for example, an adjacency_list class), is it possible to serialize it? From what I've read from the Boost serialization documentation, this doesn't seem possible as it eventually requires access to the class members; in the case of the BGL, the implementation of the classes is probably so complex that I wouldn't go through that route; plus, they may very well be private. I was wondering if there is any way to do serialization via the public interface of the BGL (ie, add_edge, etc...) ? If I understood the Serialization library correctly, everything works via the operator & which acts as >> and <<. If I define a << operator for the BGL classes, that implement the export / import operations, needed, would it be possible to use the BGL with serialization? Any help from knowledgeable people would be appreciated (I now have a quite good knowledge of the BGL but I am new to the serialization library). Jean-Noël

4 4

boost.build : need help/bug specifying struct-alignment ?
by Seb Martel 18 Jun '05

18 Jun '05

Hi, I am trying to build boost.threads 1.32 statically with struct alignment set to 1. I dug up from the documentation that this should do the trick: bjam -sTOOLS=vc-7_1 "-sBUILD=debug <struct-alignment>1" -a -d+2 however, I don't see the alignment switch '/Zp1' on the command line : "cl" /Zm800 -nologo /EHsc -c -DBOOST_THREAD_LIB_NAME=boost_thread -DBOOST_THREAD_BUILD_LIB=1 /Z7 /Od /Ob0 /EHsc /GR /MDd /Op Zc:forScope /Zc:wchar_t -I"..\..\..\bin\boost\libs\thread\build" -I"C:\Program Files\Microsoft Visual Studio .NET 2003\VC7\include" I"G:\boost_1_32_0" -Fo"..\..\..\bin\boost\libs\thread\build\libboost_thread.lib\vc-7_1\debug\threading-multi\tss.obj" -Tp"..\..\..\libs\thread\build\..\src\tss.cpp" Is there something I am missing ? -seb

2 2

[tokenizer/string_algo] splitting after a sequence
by Yuval Ronen 18 Jun '05

18 Jun '05

Hi. I need to tokenize a string according to a delimiter sequence, rather than the common "any-of-characters" algorithm. What I mean is that if I'll use the sequence "ab" to split the string "1ab2ab3", I'll get { "1", "2", "3" }, but if I'll use the same "ab" sequence to split a slightly different "1ab2ba3" string, I'll get { "1", "2ba3" }. I've looked at the tokenizer lib and string_algo's split method, but couldn't find any evidence that any of them already contain such a feature. Is there such a thing in Boost? Thanks, Yuval

3 2

smart pointer declaration question
by Jack Nguyen 18 Jun '05

18 Jun '05

I currently have template <typename T> class Vector { private: int Size; boost::shared_array<T> mpD; void VecAlloc( int size) { boost::shared_array<T> mpD_temp(new T[size]); mpD=mpD_temp; } public: Vector() { } Vector(int size) :Size(size) { VecAlloc(size); } } My question is how do i get rid of boost::shared_array<T> mpD_temp(new T[size]); ???

4 7

Generating a unique symbol
by Martin Slater 18 Jun '05

18 Jun '05

Hi there, Is there anything in boost that will generate a guarenteed unique symbol, possibly based on file and line? I've had a look through the preprocessor library but cannot see anything. Strict portabilty is not an issue as my only requirement is for vc7.1. thanks Martin

2 2

Serialization problem in a shared library
by Tapio Vuorinen (JO/LMF) 18 Jun '05

18 Jun '05

Hi, I have a problem with usage of the serialization library in my DLL. I looked through the previous mail threads in this mailing list but I didn't find any solution for my problem there. I use Linux and the boost software version is 1.32.0. My software which uses serialization services is compiled with g++ and build as a shared library. When the library is loaded dynamically at runtime the static instance of the pointer_oserializer template class is not initialized correctly and causes crashing of my software. Maybe the serialization software contains other static instances also but the instance of pointer_oserializer is the one I always meet first when I debug my software. Is there any means to fix this? Or if the initialization problem of static instances within DLL is already fixed in later versions of boost, which of them? Thanks Tapio Vuorinen

2 1

Problem in running the examples
by J Liu 17 Jun '05

17 Jun '05

I installed boost and trying to run the example for string algorithm. How could I make the example find the boost libs? coz it keeps telling me that the header can not be found. "Cannot open include file: 'boost/algorithm/string/trim.hpp': No such file or directory" I am running the example in the original folder. Thank you.

1 0

Question regarding mem_fn or function
by Elisha Berns 17 Jun '05

17 Jun '05

Hi, My imagination fails me here: How can you use boost::mem_fn or boost::function to bind a class member function as a predicate function for use in std::sort? I tried this way and that and so far, nothing. Thanks, Elisha Berns e.berns(a)computer.org

2 4

Failed to compile fstream_test.cpp on VC++ 6.0
by Jason Heyes 17 Jun '05

17 Jun '05

I receive errors when I try to compile fstream_test.cpp using Microsoft Visual C++ 6.0. The first error I receive is this: fstream_test.cpp c:\boost\include\boost-1_32\boost\filesystem\fstream.hpp(29): error C2504: 'basic_filebuf<char,char_traits<char> >': base class undefined c:\projects\examples\fstream_test.cpp(27): see reference to class template instantiation 'boost::filesystem::basic_filebuf<char,char_traits<char> >' being compiled Is there a workaround for this? Thanks.

2 2

serialization problem with strings
by Doug Henry 17 Jun '05

17 Jun '05

I have a custom stream that I am adaptiing to, so I build oarchive and iarchive classes derived from boost::archive::detail::common_xarchive according to the documentation. I have a function that looks like the following to handle the specifics of loading and saving. template<class T> void load(T & t) { // load data... } This seems to work for everything except std::string's. I noticed it when writing out a std::map<std::string, std::string>. The map is handled properly by the boost/serialization/map.hpp routines, but the strings are sent to my load function instead of being handled by boost/serialization/string.hpp. Any insight in to what I could possibly be doing wrong would be greatly appreciated. -doug

2 1

changing variant type in a visitor
by james.jones＠firstinvestors.com 16 Jun '05

16 Jun '05

Is it possible to change a variant's type within a visitor function? What I'd like to do is something like this: typedef boost::make_recursive_variant< int, std::string, std::vector<boost::recursive_variant_> >::type json_t; Then I'd like to be able to write something like this: class vector_assign : public boost::static_visitor<json_t&> { public: vector_assign(int key, const json_t& value); json_t& operator()(int&); json_t& operator()(std::string&); json_t& operator()(vector_t&); private: int key; json_t& value; }; json_t& vector_assign::operator(vector_t& v) { // the canonical case - we assign a value to a slot in the vector if(key>=v.size()) v.reserve(key); v[key] = value; return v; } json_t& map_assign::operator(int& i) { // here we want to discard the int value and convert the variant into a new vector with a single value - but how? } Thanks, - James Jones Administrative Data Mgmt. (v)732-510-1806 375 Raritan Center Pkwy, Suite A (f)732-510-1855 Edison, NJ 08837

1 0

waiting for david_abrahams's lock in /cvsroot/boost/boost/tools/build/test
by Steven T. Hatton 16 Jun '05

16 Jun '05

It looks like there's a hung lock on one of the files in the CVS: waiting for david_abrahams's lock in /cvsroot/boost/boost/tools/build/test It's been over ten minutes since I first hit it, and it has not been released. -- Regards, Steven

2 1

How to check for implicit type conversion WITHOUT checking the source object's interface
by Stephen Gross 16 Jun '05

16 Jun '05

I'm trying to find a way to see if a given object is convertible to std::string, but with certain restrictions. Normally, is_convertible<> would be fine, but in this case it doesn't work for my needs. Here's the situation in more detail. I've got a class Foo with a string conversion operator: class Foo { public: operator std::string () const; }; I want some kind of is_convertible<Foo, std::string> to return FALSE, but something like is_convertible<char*, std::string> to return TRUE. Basically, I want is_convertible to check to see if the target type (std::string) has an implicit constructor taking the input type; I *don't* want is_convertible to check to see if the input type has a conversion-to-target-type function. Is there a way to do this? --Steve

3 2

Serialization: how to serialize c style strings?
by Tom Thorne 16 Jun '05

16 Jun '05

I'm trying to understand how to go about serializing allocated c style string buffers using the serialization library. The example code below gives a compile error (see bottom) "left of '.serialize' must have class/struct/union type" and I don't see how to fix this. Could someone point me in the right direction? In the meantime I'm using std::string, but this doesn't meet my needs. Many thanks for any help. Tom ----------------------------- #include <boost/serialization/string.hpp> #include <fstream> #include <boost/archive/text_oarchive.hpp> #include <boost/archive/text_iarchive.hpp> template<class T> class test { public: template<class Archive> void serialize(Archive &ar, const unsigned int version) { ar & boost::serialization::make_nvp("p", p); } test() { p = 0; } ~test() { delete p; } explicit test(const T *t) { size_t len = std::char_traits<T>::length(t); p = new T[len+1]; std::char_traits<T>::copy(p, t, len+1); } const T *get() const { return p; } private: T *p; }; void sertest() { test<char> t("Hello"); std::ofstream ofs("test.txt"); boost::archive::text_oarchive oa(ofs); oa << t; ofs.close(); } ------------------------------ ------ Build started: Project: test, Configuration: Debug Win32 ------ Compiling... sertest.cpp c:\Proj\boost\include\boost-1_32\boost\serialization\access.hpp(106) : error C2228: left of '.serialize' must have class/struct/union type type is 'type' c:\Proj\boost\include\boost-1_32\boost\serialization\serialization.hpp(7 8) : see reference to function template instantiation 'void boost::serialization::access::serialize<Archive,T>(Archive &,T &,const unsigned int)' being compiled with [ Archive=boost::archive::text_oarchive, T=type ] c:\Proj\boost\include\boost-1_32\boost\serialization\serialization.hpp(1 21) : see reference to function template instantiation 'void boost::serialization::serialize<Archive,T>(Archive &,T &,const unsigned int)' being compiled with [ Archive=boost::archive::text_oarchive, T=type ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(15 2) : see reference to function template instantiation 'void boost::serialization::serialize_adl<Archive,T>(Archive &,T &,const unsigned int)' being compiled with [ Archive=boost::archive::text_oarchive, T=type ] c:\Proj\boost\include\boost-1_32\boost\serialization\extended_type_info_ typeid.hpp(100) : while compiling class-template member function 'void boost::archive::detail::oserializer<Archive,T>::save_object_data(boost:: archive::detail::basic_oarchive &,const void *) const' with [ Archive=boost::archive::text_oarchive, T=type ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(16 3) : see reference to class template instantiation 'boost::archive::detail::oserializer<Archive,T>' being compiled with [ Archive=boost::archive::text_oarchive, T=type ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(16 2) : while compiling class-template member function 'const boost::archive::detail::basic_oserializer &boost::archive::detail::pointer_oserializer<T,Archive>::get_basic_seria lizer(void) const' with [ T=type, Archive=boost::archive::text_oarchive ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(53 0) : see reference to class template instantiation 'boost::archive::detail::pointer_oserializer<T,Archive>' being compiled with [ T=type, Archive=boost::archive::text_oarchive ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\interface_oarchive .hpp(65) : see reference to function template instantiation 'const boost::archive::detail::basic_pointer_oserializer &boost::archive::detail::instantiate_pointer_oserializer<Archive,T>(Arch ive *,T *)' being compiled with [ Archive=boost::ar chive::text_oarchive, T=type ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(33 2) : see reference to function template instantiation 'const boost::archive::detail::basic_pointer_oserializer *boost::archive::detail::interface_oarchive<Archive>::register_type<T>(T *)' being compiled with [ Archive=boost::archive::text_oarchive, T=type ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(33 1) : while compiling class-template member function 'const boost::archive::detail::basic_pointer_oserializer *boost::archive::detail::save_pointer_type<Archive,TPtr>::non_abstract<T >::register_type(Archive &)' with [ Archive=boost::archive::text_oarchive, TPtr=char *, T=type ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(34 9) : see reference to class template instantiation 'boost::archive::detail::save_pointer_type<Archive,TPtr>::non_abstract<T >' being compiled with [ Archive=boost::archive::text_oarchive, TPtr=char *, T=type ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(47 5) : see reference to function template instantiation 'const boost::archive::detail::basic_pointer_oserializer *boost::archive::detail::save_pointer_type<Archive,TPtr>::register_type< T>(Archive &,T &)' being compiled with [ Archive=boost::archive::text_oarchive, TPtr=char *, T=char ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(46 2) : while compiling class-template member function 'void boost::archive::detail::save_pointer_type<Archive,TPtr>::invoke(Archive &,const TPtr)' with [ Archive=boost::archive::text_oarchive, TPtr=char * ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(55 1) : see reference to class template instantiation 'boost::archive::detail::save_pointer_type<Archive,TPtr>' being compiled with [ Archive=boost::archive::text_oarchive, TPtr=char * ] c:\Proj\boost\include\boost-1_32\boost\archive\basic_text_oarchive.hpp(7 1) : see reference to function template instantiation 'void boost::archive::save<Archive,T>(Archive &,const T & )' being compiled with [ Archive=boost::archive::text_oarchive, T=char * ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\interface_oarchive .hpp(80) : see reference to function template instantiation 'void boost::archive::basic_text_oarchive<Archive>::save_override<T>(const T & ,int)' being compiled with [ Archive=boost::archive::text_oarchive, T=char * ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\interface_oarchive .hpp(110) : see reference to function template instantiation 'Archive &boost::archive::detail::interface_oarchive<Archive>::operator <<<T>(const T & )' being compiled with [ Archive=boost::archive::text_oarchive, T=char * ] c:\Proj\boost\include\boost-1_32\boost\serialization\nvp.hpp(58) : see reference to function template instantiation 'Archive &boost::archive::detail::interface_oarchive<Archive>::operator &<T>(T & )' being compiled with [ Archive=boost::archive::text_oarchive, T=char * ] c:\Proj\boost\include\boost-1_32\boost\serialization\access.hpp(106) : see reference to function template instantiation 'void boost::serialization::nvp<T>::serialize<Archive>(Archive &,const unsigned int) const' being compiled with [ T=char *, Archive=boost::archive::text_oarchive ] c:\Proj\boost\include\boost-1_32\boost\serialization\serialization.hpp(7 8) : see reference to function template instantiation 'void boost::serialization::access::serialize<Archive,T>(Archive &,T &,const unsigned int)' being compiled with [ Archive=boost::archive::text_oarchive, T=boost::serialization::nvp<char *> ] c:\Proj\boost\include\boost-1_32\boost\serialization\serialization.hpp(1 21) : see reference to function template instantiation 'void boost::serialization::serialize<Archive,T>(Archive &,T &,const unsigned int)' being compiled with [ Archive=boost::archive::text_oarchive, T=boost::serialization::nvp<char *> ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(22 7) : see reference to function template instantiation 'void boost::serialization::serialize_adl<Archive,T>(Archive &,T &,const unsigned int)' being compiled with [ Archive=boost::archive::text_oarchive, T=boost::serialization::nvp<char *> ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(22 2) : while compiling class-template member function 'void boost::archive::detail::save_non_pointer_type<Archive,T>::save_only::inv okex(Archive &,const T &)' with [ Archive=boost::archive::text_oarchive, T=boost::serialization::nvp<char *> ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(30 9) : see reference to class template instantiation 'boost::archive::detail::save_non_pointer_type<Archive,T>::save_only' being compiled with [ Archive=boost::archive::text_oarchive, T=boost::serialization::nvp<char *> ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(23 7) : while compiling class-template member function 'void boost::archive::detail::save_non_pointer_type<Archive,T>::invoke(Archive &,const T &)' with [ Archive=boost::archive::text_oarchive, T=boost::serialization::nvp<char *> ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(55 1) : see reference to class template instantiation 'boost::archive::detail::save_non_pointer_type<Archive,T>' being compiled with [ Archive=boost::archive::text_oarchive, T=boost::serialization::nvp<char *> ] c:\Proj\boost\include\boost-1_32\boost\archive\basic_text_oarchive.hpp(7 1) : see reference to function template instantiation 'void boost::archive::save<Archive,T>(Archive &,const T &)' being compiled with [ Archive=boost::archive::text_oarchive, T=boost::serialization::nvp<char *> ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\interface_oarchive .hpp(87) : see reference to function template instantiation 'void boost::archive::basic_text_oarchive<Archive>::save_override<T>(const T &,int)' being compiled with [ Archive=boost::archive::text_oarchive, T=boost::serialization::nvp<char *> ] c:\Proj\lnp\core\test\sertest.cpp(14) : see reference to function template instantiation 'Archive &boost::archive::detail::interface_oarchive<Archive>::operator &<boost::serialization::nvp<T>>(const boost::serialization::nvp<T> &)' being compiled with [ Archive=boost::archive::text_oarchive, T=char * ] c:\Proj\boost\include\boost-1_32\boost\serialization\access.hpp(106) : see reference to function template instantiation 'void test<T>::serialize<Archive>(Archive &,const unsigned int)' being compiled with [ T=char, Archive=boost::archive::text_oarchive ] c:\Proj\boost\include\boost-1_32\boost\serialization\serialization.hpp(7 8) : see reference to function template instantiation 'void boost::serialization::access::serialize<Archive,T>(Archive &,T &,const unsigned int)' being compiled with [ Archive=boost::archive::text_oarchive, T=test<char> ] c:\Proj\boost\include\boost-1_32\boost\serialization\serialization.hpp(1 21) : see reference to function template instantiation 'void boost::serialization::serialize<Archive,T>(Archive &,T &,const unsigned int)' being compiled with [ Archive=boost::archive::text_oarchive, T=test<char> ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(15 2) : see reference to function template instantiation 'void boost::serialization::serialize_adl<Archive,T>(Archive &,T &,const unsigned int)' being compiled with [ Archive=boost::archive::text_oarchive, T=test<char> ] c:\Proj\boost\include\boost-1_32\boost\serialization\extended_type_info_ typeid.hpp(100) : while compiling class-template member function 'void boost::archive::detail::oserializer<Archive,T>::save_object_data(boost:: archive::detail::basic_oarchive &,const void *) const' with [ Archive=boost::archive::text_oarchive, T=test<char> ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(23 4) : see reference to class template instantiation 'boost::archive::detail::oserializer<Archive,T>' being compiled with [ Archive=boost::archive::text_oarchive, T=test<char> ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(23 3) : while compiling class-template member function 'void boost::archive::detail::save_non_pointer_type<Archive,T>::save::invokex( Archive &,const T &)' with [ Archive=boost::archive::text_oarchive, T=test<char> ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(30 9) : see reference to class template instantiation 'boost::archive::detail::save_non_pointer_type<Archive,T>::save' being compiled with [ Archive=boost::archive::text_oarchive, T=test<char> ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(23 7) : while compiling class-template member function 'void boost::archive::detail::save_non_pointer_type<Archive,T>::invoke(Archive &,const T &)' with [ Archive=boost::archive::text_oarchive, T=test<char> ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\oserializer.hpp(55 1) : see reference to class template instantiation 'boost::archive::detail::save_non_pointer_type<Archive,T>' being compiled with [ Archive=boost::archive::text_oarchive, T=test<char> ] c:\Proj\boost\include\boost-1_32\boost\archive\basic_text_oarchive.hpp(7 1) : see reference to function template instantiation 'void boost::archive::save<Archive,T>(Archive &,const T &)' being compiled with [ Archive=boost::archive::text_oarchive, T=test<char> ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\interface_oarchive .hpp(80) : see reference to function template instantiation 'void boost::archive::basic_text_oarchive<Archive>::save_override<T>(const T &,int)' being compiled with [ Archive=boost::archive::text_oarchive, T=test<char> ] c:\Proj\boost\include\boost-1_32\boost\archive\detail\interface_oarchive .hpp(105) : see reference to function template instantiation 'Archive &boost::archive::detail::interface_oarchive<Archive>::operator <<<test<T>>(const test<T> &)' being compiled with [ Archive=boost::archive::text_oarchive, T=char ] c:\Proj\lnp\core\test\sertest.cpp(55) : see reference to function template instantiation 'Archive &boost::archive::detail::interface_oarchive<Archive>::operator <<<test<T>>(test<T> &)' being compiled with [ Archive=boost::archive::text_oarchive, T=char ] test - 1 error(s), 0 warning(s) ---------------------- Done ---------------------- Build: 0 succeeded, 1 failed, 0 skipped

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date_time: << operator for time_duration
by Donato Petrino 16 Jun '05

16 Jun '05

Hello, one short question regarding the 'operator<<' on time_durations (which in turn calls 'duration_put' in time_formatting_streams.hpp): The stream's filler is changed via the manipulator 'std::setfill' to zero ('0'), but without setting it back to the one the stream had when entering to this function (in my case blank (' ')). This results in undesired leading blanks on the subsequent usage of the same stream object. Question: Is it a bug or is it the common way how streams are used (which would mean that is't up to me resetting it to blank again). Thank you in advance! -- Donato Petrino

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Random numbers: problem with uniform_real random distribution
by Dave Steffen 15 Jun '05

15 Jun '05

Hi Folks, I'm getting some very odd results out of the random uniform_real distribution. The distribution uniform_real<> rdouble (-1, 3); returns a sequence of number that looks like 1.28327e+10 2.34686e+09 1.29337e+10 1.25118e+10 1.54783e+10 1.13449e+10 which certainly doesn't meet the requirement of returning values in [-1,3)! I don't see any mention of this on the bug tracker; has anyone else seen this? ---------------------------------------------------------------------- Dave Steffen, Ph.D. "There are two ways to write error-free Software Engineer IV programs; only the third one works." Numerica Corporation ph (970) 419-8343 x27 "Pie are not square. Pie are round. fax (970) 223-6797 Cornbread are square" dgsteffen(a)numerica.us ... anon (usenet)

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Re: [Boost-users] Reference information for mpl::for_each
by Stephen Gross 15 Jun '05

15 Jun '05

>Maybe > template <class Sequence, class T> struct contains_convertible_type : mpl::not_< boost::is_same< typename mpl::find_if< type_sequence , boost::is_convertible<T,_1> >::type , typename mpl::end<Sequence>::type > > {}; Cool--thanks for the info; I'll work on it... Thanks, --Steve

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Boost.mpl suggestion: variation of find_if
by Vyacheslav Kononenko 15 Jun '05

15 Jun '05

Hi, I could not come with usable name for such thing but it could be usable anyway. So it is like find_if but applies a function to an sequence and return first non void type that function returned. So implementation would be trivial: template< typename Sequence, typename Func > struct find_type : fold< Sequence, void_, if_< is_void_< _1 >, Func< _2 >, _1 > {}; If it can be implemented by current set of algorithms please point me out. Regards, Vyacheslav

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fatal error LNK1104: cannot open file 'libboost_regex-vc71-sgd-1_32.lib'
by John Lucas 15 Jun '05

15 Jun '05

Hi boost New to C++ and boost so please bear with me. I have downloaded the boost library (1.3.2) from sf.net on to a Windows XP platform running Visual Studio .NET. I've started a C++ project however when I compile it, having added the regex class, I get the following error: fatal error LNK1104: cannot open file 'libboost_regex-vc71-sgd-1_32.lib' I have include the lib path for boost and that worked OK with the other libraries but not this one. Any one got any ideas? John Lucas Director of Operations MI International UK Tel: +44 (0)1642 356138 Mobile: +44 (0)7884 181828 Email: <mailto:john.lucas@mi-int.com> john.lucas(a)mi-int.com URL: <http://www.mi-int.com/> www.mi-int.com <http://www.mi-int.com/images/logo3.JPG> First for European POI and business data In association with D&B DISCLAIMER: this email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error, please notify the system manager. Please note that any views or opinions presented in this email are solely those of the author and do not necessarily represent those of the company. If you are not the intended recipient, please email postmaster(a)mi-int.com, along with a copy of the email. Finally, the recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. E&OE

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Re: [Boost-users] fatal error LNK1104: cannot open file'libboost_regex-vc71-sgd-1_32.lib'
by Marcin Tustin 15 Jun '05

15 Jun '05

The readmes do say, but briefly, get bjam from the boost sourceforge site, and run it in the boost root directory. Alternatively, there may well be project files for use with visual studio available for regex inside the boost distribution. > -----Original Message----- > From: John Lucas [mailto:john.lucas@mi-int.com] > Sent: 14 June 2005 22:43 > To: boost-users(a)lists.boost.org > Subject: Re: [Boost-users] fatal error LNK1104: cannot open > file'libboost_regex-vc71-sgd-1_32.lib' > > Build the libraries? I understand what that means. How do I do that? > ________________________________ > > From: boost-users-bounces(a)lists.boost.org > [mailto:boost-users-bounces@lists.boost.org] On Behalf Of > Victor A. Wagner Jr. > Sent: 14 June 2005 21:34 > To: boost-users(a)lists.boost.org > Subject: Re: [Boost-users] fatal error LNK1104: cannot open > file 'libboost_regex-vc71-sgd-1_32.lib' > > > At 07:37 2005-06-14, John Lucas wrote: > > > Hi boost > > New to C++ and boost so please bear with me. > > I have downloaded the boost library (1.3.2) from sf.net > on to a Windows XP platform running Visual Studio .NET. I've > started a C++ project however when I compile it, having added > the regex class, I get the following error: > > fatal error LNK1104: cannot open file > 'libboost_regex-vc71-sgd-1_32.lib' > > I have include the lib path for boost and that worked > OK with the other libraries but not this one. Any one got any ideas? > > > did you build the boost libraries for your > compiler(apparently VC++7.1)? > > > > > > > > > > John Lucas > Director of Operations > MI International > UK > Tel: +44 (0)1642 356138 > Mobile: +44 (0)7884 181828 > Email: john.lucas(a)mi-int.com <mailto:john.lucas@mi-int.com> > URL: www.mi-int.com <http://www.mi-int.com/> > > > > > > First for European POI and business data > > > > > > In association with D&B > > > > > > DISCLAIMER: this email and any files transmitted with > it are confidential and intended solely for the use of the > individual or entity to whom they are addressed. If you have > received this email in error, please notify the system > manager. Please note that any views or opinions presented in > this email are solely those of the author and do not > necessarily represent those of the company. If you are not > the intended recipient, please email postmaster(a)mi-int.com, > along with a copy of the email. Finally, the recipient should > check this email and any attachments for the presence of > viruses. The company accepts no liability for any damage > caused by any virus transmitted by this email. E&OE > > > > > > > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users > > Victor A. Wagner Jr. http://rudbek.com > <http://rudbek.com/> The five most dangerous words in the > English language: > "There oughta be a law" > >

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Re: [Boost-users] fatal error LNK1104: cannot open file'libboost_regex-vc71-sgd-1_32.lib'
by Marcin Tustin 15 Jun '05

15 Jun '05

This probably means that you haven't compiled the library corresponding to your current setup. If the autolinking not choosing the library compiled with the right settings (i.e. you've decided that you know better than boost what to link to), you could modify the regexp headers to not do autolinking (search for inclusion of autolink.hpp), and configure your project to link against the right lib. > -----Original Message----- > From: John Lucas [mailto:john.lucas@mi-int.com] > Sent: 14 June 2005 15:37 > To: boost-users(a)lists.boost.org > Subject: [Boost-users] fatal error LNK1104: cannot open > file'libboost_regex-vc71-sgd-1_32.lib' > > Hi boost > > New to C++ and boost so please bear with me. > > I have downloaded the boost library (1.3.2) from sf.net on to > a Windows XP platform running Visual Studio .NET. I've > started a C++ project however when I compile it, having added > the regex class, I get the following error: > > fatal error LNK1104: cannot open file > 'libboost_regex-vc71-sgd-1_32.lib' > > I have include the lib path for boost and that worked OK with > the other libraries but not this one. Any one got any ideas? > > > > > > > John Lucas > Director of Operations > MI International > UK > Tel: +44 (0)1642 356138 > Mobile: +44 (0)7884 181828 > Email: john.lucas(a)mi-int.com <mailto:john.lucas@mi-int.com> > URL: www.mi-int.com <http://www.mi-int.com/> > > <http://www.mi-int.com/images/logo3.JPG> > > > > First for European POI and business data > > > In association with D&B > > > DISCLAIMER: this email and any files transmitted with it are > confidential and intended solely for the use of the > individual or entity to whom they are addressed. If you have > received this email in error, please notify the system > manager. Please note that any views or opinions presented in > this email are solely those of the author and do not > necessarily represent those of the company. If you are not > the intended recipient, please email postmaster(a)mi-int.com, > along with a copy of the email. Finally, the recipient should > check this email and any attachments for the presence of > viruses. The company accepts no liability for any damage > caused by any virus transmitted by this email. E&OE > > >

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Re: [Boost-users] How to inherit from boost::multi_array
by Sohail Somani 14 Jun '05

14 Jun '05

-----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Yan Zhang Sent: Tuesday, June 14, 2005 4:07 PM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] How to inherit from boost::multi_array Hi Ron, I finally got it work by using static_cast. But I ran into another problem as you pointed out early that you have to define dimension before you use assignment and copy constructor. That makes the whole thing quit complicated. Any suggestion? Thanks. Yan Revisit inheritance?

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Re: [Boost-users] How to inherit from boost::multi_array
by Yan Zhang 14 Jun '05

14 Jun '05

Hi Ron, I finally got it work by using static_cast. But I ran into another problem as you pointed out early that you have to define dimension before you use assignment and copy constructor. That makes the whole thing quit complicated. Any suggestion? Thanks. Yan _____ From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Ronald Garcia Sent: Tuesday, June 14, 2005 2:28 PM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] How to inherit from boost::multi_array Use static_cast, rather than const_cast. Cheers, ron On Jun 13, 2005, at 11:14 AM, Yan Zhang wrote: Hi Ron, How do you "cast "other" to the multi_array type" here? I used Array (const Array& other) : boost::multi_array<double,2>( const_cast<const boost::multi_array<double,2>& > other) { } And it failed to compile. Thank for your help, YanI'm read the posting by Thomas and replay by Ronald on how to inherit from boost::multi_array as following: On Oct 2, 2004, at 10:26 AM, Thomas Mensch wrote: Dear List, I am using boost 1.31.0 on Linux (with gcc 3.3.2)I would like to create a 2D array class, which inherits fromboost::multi_array<double, 2> class. However I have problemswith the copy constructor of my class Array. Below is the code,which I am trying to run.

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Reference information for mpl::for_each ?
by Stephen Gross 14 Jun '05

14 Jun '05

(1) Where can I find reference information for mpl::for_each (I've looked around on the boost website and can't seem to find it). (2) Here's what I'm trying to do: I've got an mpl::vector. Given some type T, I want to loop across the vector and see if T is convertible to any of the types in the vector. I tried something like 'for_each<typelist, is_convertible<T, _1> >()' but my syntax is definitely wrong. Any ideas? Thanks in advance, --Steve Stephen Gross Case Western School of Medicine Cleveland, OH "By Grabthar's hammer, by the sons of Worvan, you shall be avenged." - Dr. Lazarus

4 3

Re: [Boost-users] How to inherit from boost::multi_array
by Yan Zhang 14 Jun '05

14 Jun '05

Hi Ron, How do you "cast "other" to the multi_array type" here? I used Array (const Array& other) : boost::multi_array<double,2>( const_cast<const boost::multi_array<double,2>& > other) { } And it failed to compile. Thank for your help, Yan _____ From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Ronald Garcia Sent: Monday, June 13, 2005 7:54 AM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] How to inherit from boost::multi_array Greetings Yan, I do not recall the context of the problem you describe below, but It appears that the definition: Array (const Array& other) : boost::multi_array<double, 2> (other) {} is the problem. the above expression will call the templated constructor. I believe that the solution here is to cast "other" to the multi_array type. That should result in the proper constructor call. HTH, ron On Jun 6, 2005, at 12:09 PM, Yan Zhang wrote: I'm read the posting by Thomas and replay by Ronald on how to inherit from boost::multi_array as following: On Oct 2, 2004, at 10:26 AM, Thomas Mensch wrote: Dear List, I am using boost 1.31.0 on Linux (with gcc 3.3.2)I would like to create a 2D array class, which inherits fromboost::multi_array<double, 2> class. However I have problemswith the copy constructor of my class Array. Below is the code,which I am trying to run.

2 1

static link of boost.thread requires link to static runtime ?
by Seb Martel 14 Jun '05

14 Jun '05

Hi- I am trying to static link to boost.thread 1.32 (winXP) and I see it requires the runtimes to be linked static as well (#define _DLL mustn't be defined). I want to use the dynamic runtimes, but static link boost.thread. Is this possible ? What prevents it if not ? Thanks, -seb

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Serialization - compile warnings with with text_iarchive.hpp and demo.cpp
by Ken Roser 14 Jun '05

14 Jun '05

When compiling demo.cpp I get the warnings: /home/test/boost/include/boost-1_32/boost/archive/detail/common_iarchive.hpp: In member function `void boost::archive::detail::common_iarchive<Archive>::init() [with Archive = boost::archive::text_iarchive]': /home/test/boost/include/boost-1_32/boost/archive/text_iarchive.hpp:69: instantiated from `boost::archive::text_iarchive_impl<Archive>::text_iarchive_impl(std::istream&, unsigned int) [with Archive = boost::archive::text_iarchive]' /home/test/boost/include/boost-1_32/boost/archive/text_iarchive.hpp:82: instantiated from here /home/test/boost/include/boost-1_32/boost/archive/detail/common_iarchive.hpp:75: warning: choosing `boost::archive::version_type::operator unsigned int&()' over ` boost::archive::version_type::operator unsigned int() const' /home/test/boost/include/boost-1_32/boost/archive/detail/common_iarchive.hpp:75: warning: for conversion from `boost::archive::version_type' to `unsigned int' /home/test/boost/include/boost-1_32/boost/archive/detail/common_iarchive.hpp:75: warning: because conversion sequence for the argument is better I'm using this compiler: g++ (GCC) 3.2.3 20030502 (Red Hat Linux 3.2.3-52) I'd like a way to silence these warnings assuming this isn't a problem on my system. I apologize if this was discussed previously, but I couldn't find any means to search the mailing list archive.

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bug on /libs/graph/doc/quick_tour.html
by martin f krafft 14 Jun '05

14 Jun '05

The first bit of sample code in the section "Adding Some Color to your Graph" on http://www.boost.org/libs/graph/doc/quick_tour.html does not compile. Graph G(num_nodes, edges, edges + sizeof(edges) / sizeof(E), weights); --> there seems to be no corresponding constructor. I am still fighting to find the proper solution and will followup when I find something. -- martin; (greetings from the heart of the sun.) \____ echo mailto: !#^."<*>"|tr "<*> mailto:" net@madduck invalid/expired pgp subkeys? use subkeys.pgp.net as keyserver! spamtraps: madduck.bogus(a)madduck.net "you don't sew with a fork, so I see no reason to eat with knitting needles." -- miss piggy, on eating chinese food

2 1

Boost.Thread : catching all exceptions
by Adrian Mawbey 13 Jun '05

13 Jun '05

Hi folks. Apologies if this has been discussed frequently before. I'm puzzled as to why the boost.thread thread_proxy function catches all exceptions and then quietly ends the thread. For example:- class MyThreadFunctor { public: void operator()() const { // Do some processing... throw very_bad_exception(); // ...never get to do some processing. } }; int main(int argc, char * argv[]) { MyThreadFunctor my_functor; boost::thread my_thread(my_functor); // Do lots of processing and then join to my_thread. // ... } In boost 1.32, the exception that is thrown in the created thread is caught in the library's thread_proxy function and then the thread exits quietly. Is there a compelling reason for this behaviour? >From my point of view, it seems more flexible to not catch exceptions in the thread_proxy function. If I wanted to, I could still get the current behaviour by putting a try/catch-all block in the operator() function. I would have expected the normal C++ uncaught exception actions (i.e. calling terminate()) to occur if an exception is thrown out of the user provided thread code. I noticed this when (oh horror!) an error in my code threw an exception out of operator(). I could have identified where the problem was from the core file or Dr Watson log that would have been created if the exception had not been caught by thread_proxy(). Am I missing something obvious here? Thanks, Adrian.

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Tokenizer Question
by Tom Browder 13 Jun '05

13 Jun '05

I have used my own C++ tokenizer in the past, but I would like to use Boost's instead. The predominant use of tokenizing for me is to split on white space, but Boost's default is to use white space AND punctuation. Is there any possibility to have either the default changed, or another TokenizerFunction added such as ws_separator, or something similar? I know I can use boost::char_separator<char> sep(" \n\t"); (but do I need to add "\v" to the char set?) but I would rather have something like boost::ws_separator sep; and, better, make the ws_separator be the default TokenizerFunction for tokenizer. Thanks for listening. Tom Browder

2 2

Text_archives don't support integer types?
by Marcin Tustin 13 Jun '05

13 Jun '05

I'm using the CVS version of Boost from 2005-06-06, and it seems that text archives don't support anything except strings, characters, and the like, specifically not integer types like int. I've grepped the archive includes, and it seems that there are no save methods specified for the integer types (except char) by the text archives, and I get compiler errors like: c:\D2\API\NewClient\EnhancedMessageHandler.h(370) : error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'int' (or there is no acceptable conversion) (with VC7.1) It works when the RHS of << is a variable, but not when it is a function. I take it that this is because with variables, a string is automatically constructed to wrap the int types. This is very confusing, and might well be worth mentioning in the docs. Marcin Tustin IT Innovation Centre 2 Venture Road Chilworth Science Park Southampton, SO16 7NP, UK tel: +44 23 8076 0834 fax: +44 23 8076 0833 mailto:mt@it-innovation.soton.ac.uk http://www.it-innovation.soton.ac.uk

2 1

qualified name error on vc7-stlport
by Johannes Strömberg 13 Jun '05

13 Jun '05

Hi, I am trying to build boost for vc7-stlport (stlport version 4.6.2) and I get most libraries to compile but when compiling the date_time library I get errors like the following: C:\wspace\dev\ssdk\ssdk\stlport\src\stlport\stl\_iterator_base.h(98) : error C2825: '_Iterator::iterator_category': cannot form a qualified name C:\wspace\dev\ssdk\ssdk\boost\src\boost\date_time\date_parsing.hpp(252) : see reference to class template instantiation '_STL::iterator_traits<_Iterator>' being compiled with [ _Iterator=_STL::basic_string<char,_STL::char_traits<char>,_STL::allocator<char>>::iterator ] C:\wspace\dev\ssdk\ssdk\boost\src\boost\date_time\gregorian\parsers.hpp(73) : see reference to function template instantiation 'boost::date_time::period<point_rep,duration_rep> boost::date_time::from_simple_string_type<boost::gregorian::date,char>(const _STL::basic_string<_CharT,_Traits,_Alloc> &)' being compiled with [ point_rep=boost::gregorian::date, duration_rep=boost::gregorian::date_duration, _CharT=char, _Traits=_STL::char_traits<char>, _Alloc=_STL::allocator<char> ] C:\wspace\dev\ssdk\ssdk\stlport\src\stlport\stl\_iterator_base.h(98) : error C2039: 'iterator_category' : is not a member of 'operator``global namespace''' C:\wspace\dev\ssdk\ssdk\stlport\src\stlport\stl\_iterator_base.h(98) : fatal error C1507: previous user errors and subsequent error recovery halt further compilation I know it has to do with a compiler deficiency but how can I fix it? /Johannes

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multi_array operator= and copy constructor have problem
by Yan Zhang 13 Jun '05

13 Jun '05

I'm testing multi_array with a simple example: typedef boost::multi_array<double, 3> array; array A(boost::extents[3][4][2]); A[0][0][0] = 3.14; array B; B = A; When execute the last statement B=A, you encounter assertion: assert(std::equal(other.shape(),other.shape()+this->num_dimensions(), this->shape())); in file multi_array_ref.hpp (line 476). I used VC++ 7.1 with debug build. Please advice.

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Re: [Boost-users] How to inherit from boost::multi_array
by Yan Zhang 13 Jun '05

13 Jun '05

I'm read the posting by Thomas and replay by Ronald on how to inherit from boost::multi_array as following: On Oct 2, 2004, at 10:26 AM, Thomas Mensch wrote: Dear List, I am using boost 1.31.0 on Linux (with gcc 3.3.2) I would like to create a 2D array class, which inherits from boost::multi_array<double, 2> class. However I have problems with the copy constructor of my class Array. Below is the code, which I am trying to run. #include <boost/multi_array.hpp> class Array : public boost::multi_array<double,2> { public: Array (void) : boost::multi_array<double, 2> () {} Array (const int nrow, const int ncol) : boost::multi_array<double, 2> (boost::extents[nrow][ncol]) {} Array (const Array& other) : boost::multi_array<double, 2> (other) {} ~Array (void) {} Array& operator= (const Array& rhs) { if (&rhs != this) { boost::multi_array<double, 2>::operator= (rhs); } return *this; } }; /* class Array */ Ronald's replay: Greetings Thomas, Though you did not supply the error message from your compiler, I suspect that the problem is this: multi_array has a templated constructor of the form: template <class T> multi_array(T const&); that will match your Array type better than the constructor with the signature: multi_array(multi_array<double,2> const&); In short, overload resolution is not selecting the constructor that you desire. You'll need to coerce your Array reference to a multi_array<double,2> reference before passing it to the constructor. Hope this helps. I had the same problem as Thomas'. I don't quit understand Ronald's comment. How to you overload template <class T> multi_array(T const&) instead of multi_array(multi_array<double,2> const&)? I thought Thomas' code is overloading template <class T> multi_array(T const&). Thanks in advance, Yan

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[BGL] edge_index_t
by martin f krafft 13 Jun '05

13 Jun '05

I see the edge_index_t symbol used all over the place, but I cannot find its defintion. So now I am stuck: error: `egde_index_t' undeclared in namespace `boost' What header file do I have to include to be able to access my graph's edge index property? -- martin; (greetings from the heart of the sun.) \____ echo mailto: !#^."<*>"|tr "<*> mailto:" net@madduck invalid/expired pgp subkeys? use subkeys.pgp.net as keyserver! spamtraps: madduck.bogus(a)madduck.net echo '9,J8HD,fDGG8B@?:536FC5=8@I;C5?@H5B0D@5GBIELD54DL>@8L?:5GDEJ8LDG1' |\ sed ss,s50EBsg | tr 0-M 'p.wBt SgiIlxmLhan:o,erDsduv/cyP'

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bug on /libs/graph/doc/using_adjacency_list.html
by martin f krafft 13 Jun '05

13 Jun '05

In this text: NOTE: The Boost Graph Library supports two interchangeable methods for specifying interior properties: bundled properties and property lists. The former is easier to use and requires less effort, whereas the latter is compatible with older, broken compilers and is backward-compatible with Boost versions prior to 1.32.0. If you absolutely require these compatibility features, read on to learn about property lists. Otherwise, we strongly suggest that you read about the bundled properties mechanism. I really think that "former" and "latter" got swapped around. :) -- martin; (greetings from the heart of the sun.) \____ echo mailto: !#^."<*>"|tr "<*> mailto:" net@madduck invalid/expired pgp subkeys? use subkeys.pgp.net as keyserver! spamtraps: madduck.bogus(a)madduck.net "a cigarette is the perfect type of pleasure. it is exquisite, and it leaves one unsatisfied." -- oscar wilde

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No << or & operator defined (a different problem?)
by Marcin Tustin 13 Jun '05

13 Jun '05

I'm getting substantially the same error as before: c:\D2\API\NewClient\EnhancedMessageHandler.h(371) : error C2679: binary '&' : no operator found which takes a right-hand operand of type 'int' (or there is no acceptable conversion) Or, alternatively binary '<<' when using the << operator, in the code: template<class Archive > static void save(Archive & ar, const IplJrsMediaTimePoint& g, const unsigned int version) { ar << ( const int )(g.GetYear()); } - But also when I use static_cast or for type uint32 when I don't have a cast. Any suggestions very gratefully received. Marcin Tustin IT Innovation Centre 2 Venture Road Chilworth Science Park Southampton, SO16 7NP, UK tel: +44 23 8076 0834 fax: +44 23 8076 0833 mailto:mt@it-innovation.soton.ac.uk http://www.it-innovation.soton.ac.uk

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Re: [Boost-users] Boost.Serialization and Pointers to ObjectsofDerived Classes
by Richard Jennings 13 Jun '05

13 Jun '05

Thanks for your reply. I included the void_cast_register call because the base class is not being serialised by the derived class nor is the derived class being serialised and hence my understanding was that it was needed in this special case. It works with the paramaters to void_cast_register swapped. The include file void_cast.hpp does show the parameters as you state, however the documentation and examples have them in the order <base, derived> (special.html). Can I suggest that this is updated please? Regards, Richard -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Robert Ramey Sent: 10 June 2005 16:52 To: boost-users(a)lists.boost.org Subject: [Boost-users] Re: Boost.Serialization and Pointers to ObjectsofDerived Classes void_cast_register should be necessary only in the most unusual cases. It should happen automatically as part of the "base_object" wrappers call. Also it is used void_cast_register<Derived, Base> which is the opposite you've of what you've done below. So I would remove it from your example. The export should make up for this. There are number of code paths related to borland 5.64 and borland 5.51. I don't know anything about borland 6. void_cast/export/template instantiation are areas which many compilers have exhibited unexpected behavior. So its quite possible that the code as is can't accomodate BC 6. As far as I know - we've never seen borland 6 or tested it. So if you want to use any part of boost with a new compiler whose ancestor has a history of special requirements, you should be prepared to run the test suite for that compiler. Please do this and post the results. Robert Ramey

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BOOST_HAS_HASH not defined in config\stdlib\dinkumware.hpp?
by Erik Charlebois 13 Jun '05

13 Jun '05

Was trying to use boost::serialize on a stdext::hash_map (with VC++ 8) and noticed that BOOST_HAS_HASH is not defined in the standard library configuration header for dinkumware stl. Is this a bug in boost? In the meantime I'll just define it in my makefile. Erik Charlebois

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Re: [Boost-users] Tokenizer Question
by Victor A. Wagner Jr. 12 Jun '05

12 Jun '05

At 07:33 2005-06-12, Tom Browder wrote: >Victor, my humble tokenizer: > > string input_to_be_tokenized; > istringstream ss; > string s; > deque<string> tokens; > while (input_to_be_tokenized >> ss) > tokens.push_back(ss); > >I made 3 test programs: > string inp; > for (int i = 0; i < 10000000; ++i) > inp += " a"; > // generate a container of tokens from inp with one of three methods: > // my method (see above) > // Victor's method > // Boost, using a separator of (" \n\t") > > // if desired, loop over all the tokens using operator[] for the two > deques, and the iterator for Boost's container > >Then I compiled them (gcc 3.4.2, Fedora Core 3, i386): > > g++ -pg progN progN.cc > >Ran them without the final loop and saved 'gmon.out' as a unique name. > >Ran them again with the final loop and saved 'gmon.out' as a unique name. > >Ran all six gmon's and saved the outputs to unique files: > > gprof progN gmonX > X.prof > >The accumulated times (sec) are surprising: > > Boost Victor's Mine > ===== ===== ==== >no loop 1.50 38.84 20.13 >loop 131.91 38.89 23.91 it's difficult to fathom a hand written loop beating the internal constructor for deque > >Granted, I didn't do the tests multiple times, but it seems to me that the >Boost tokenizer is great if you don't need to iterate through it, but it >is the pits if you do. > >-Tom > >I'll send you my code and results if interested. > >-Tom > > prog > >Ran then a >Ran them with gprof > > gprof progN > >Ran > generate a string with 10,000,000 tokens (" a")_: " a a a ....a" and > timed your tokenizer against mine 10 times. Mine beat yours by 2 to 3 > seconds every time. > >The I used the Boost tokenizer and the timings went WAY down. > >So I think the benefits og the Boost tokenizer are well worth it, even for >trivial tokenizing. > >-Tom > > > >my tokenizer > > >---------- >From: boost-users-bounces(a)lists.boost.org >[mailto:boost-users-bounces@lists.boost.org] On Behalf Of Victor A. Wagner Jr. >Sent: Sunday, June 12, 2005 1:20 AM >To: boost-users(a)lists.boost.org >Subject: Re: [Boost-users] Tokenizer Question > >At 19:19 2005-06-11, you wrote: >> > for tokenizing on whitespace, simple stream input (>>) to a >> > std::string suffices. >> >>My own tokenizer does just that--and puts the tokens into a deque. >> >> > IMO, it's hardly worth troubling yourself with a tokenizer >> > for whitespace. >> >>Well, not really. When parsing line-oriented output and semi-known >>structured lines it's handy to be able to sometimes work with a line's >>tokens as if they were in a vector or deque. > > string yourline; > istringstream is( yourline ); > deque < string > yourvec(( istream_iterator < std :: string >( is > )), istream_iterator <std :: string >()); > >voila, a deque > >it would be interesting to profile that against the hypothetical indexable >tokenizer. > > >>In fact, I was going to add a suggestion that the tokenizer also have the [] >>operator so that the individual tokens could be addressed as tok[1], etc. >> >>-Tom >> >>_______________________________________________ >>Boost-users mailing list >>Boost-users(a)lists.boost.org >>http://lists.boost.org/mailman/listinfo.cgi/boost-users > >Victor A. Wagner Jr. http://rudbek.com >The five most dangerous words in the English language: > "There oughta be a law" > >_______________________________________________ >Boost-users mailing list >Boost-users(a)lists.boost.org >http://lists.boost.org/mailman/listinfo.cgi/boost-users Victor A. Wagner Jr. http://rudbek.com The five most dangerous words in the English language: "There oughta be a law"

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Re: [Boost-users] Tokenizer Question
by Victor A. Wagner Jr. 12 Jun '05

12 Jun '05

At 10:52 2005-06-11, Tom Browder wrote: >I have used my own C++ tokenizer in the past, but I would like to use >Boost's instead. > >The predominant use of tokenizing for me is to split on white space, for tokenizing on whitespace, simple stream input (>>) to a std::string suffices. IMO, it's hardly worth troubling yourself with a tokenizer for whitespace. > but >Boost's default is to use white space AND punctuation. Is there any >possibility to have either the default changed, or another TokenizerFunction >added such as ws_separator, or something similar? > >I know I can use > > boost::char_separator<char> sep(" \n\t"); > >(but do I need to add "\v" to the char set?) > >but I would rather have something like > > boost::ws_separator sep; > >and, better, make the ws_separator be the default TokenizerFunction for >tokenizer. > >Thanks for listening. > >Tom Browder > > > > > > >_______________________________________________ >Boost-users mailing list >Boost-users(a)lists.boost.org >http://lists.boost.org/mailman/listinfo.cgi/boost-users Victor A. Wagner Jr. http://rudbek.com The five most dangerous words in the English language: "There oughta be a law"

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RE: [Boost-users] Using minimal boost header files.
by Brian Braatz 11 Jun '05

11 Jun '05

I have never used this tool. But I believe this is what you are looking for: http://www.boost.org/tools/bcp/bcp.html Brian ________________________________ From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Junkeh Sent: Friday, June 10, 2005 11:07 AM To: boost-users(a)lists.boost.org Subject: [Boost-users] Using minimal boost header files. Dear Sirs/Madams, I would like to be able to use some of the features of the boost library but only a very tiny portion of them! May I ask whether it is possible to do this and therefore distribute much less than 17Mbs worth of mostly unused code? Yours, Dan.

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Building Boost on Mac OS X
by Brian Campbell 10 Jun '05

10 Jun '05

I'm trying to build boost (boost_1_31_0) as a dependency for monotone <http://venge.net/monotone/> on Mac OS X 10.4 (tiger). I'm doing this using gcc-3.3 because monotone doesn't work properly with gcc 4. Following the instructions in monotone for how to build boost, it tells me to do this: $BJAM "-sBUILD=release <threading>single <optimization>speed <runtime- link>static" This failed on a few of the targets, with an error that crt0.o was not found. This is probably because static linking of binaries is not supported on Mac OS X: http://developer.apple.com/qa/qa2001/qa1118.html So I tried removing the <runtime-link>static option, but then I started getting errors about not being able to find certain symbols. For some projects, it was complaining about not being able to find _main. It also complained about not being able to find __Z20init_unit_test_suiteiPPc in libboost_unit_test_framework, and there may have been other errors too. Here's the error output for some of these: gcc-Link-action bin/boost/libs/thread/build/libboost_thread.dylib/gcc/ release/shared-linkable-true/libboost_thread-gcc-1_31.dylib c++: unrecognized option `-shared' ld: Undefined symbols: _main gcc-Link-action bin/boost/libs/test/build/ libboost_unit_test_framework.dylib/gcc/release/shared-linkable-true/ libboost_unit_test_framework-gcc-1_31.dylib c++: unrecognized option `-shared' ld: Undefined symbols: __Z20init_unit_test_suiteiPPc So, I'm wondering what I need to do to get boost to build on darwin. Can anyone give me some help? Thanks, Brian

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Boost.mpl metafunction with integral value problem
by Vyacheslav Kononenko 10 Jun '05

10 Jun '05

Hi, I've been trying boost::mpl for my current project and hit a problem. Sorry if it is an already known issue. So if we have our own metafucntion: template< typename T, typename Value > func : mpl::void_ {}; it works fine: typedef mpl::find_if< mpl::vector< int, char >, func< mpl::_1, mpl::int_< 10 > >::type iter; ... But if I try to use integral value instead: template< typename T, int Value > func : mpl::void_ {}; and typedef mpl::find_if< mpl::vector< int, char >, func< mpl::_1, 10 >::type iter; It fails on gcc 3.3.3 nor 3.4.3. So is it a limitation on language or compiler or library? I mean should second variant compile in generic? Regards, Vyacheslav

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Re: [Boost-users] Re: Building boostbook from cvs fails lately (FIX).
by Peter Whaite 10 Jun '05

10 Jun '05

Peter Whaite <boost(a)whaite.ca> wrote: > Vladimir Prus <ghost(a)cs.msu.su> wrote: > > > > ../tools/build/v2/doc/src/install.xml:11: error: xmlParseEntityRef: > > > expecting ';' > > > > > url="http://sourceforge.net/project/showfiles.php?group_id=7586&package_i > > > > Well, that's unquoted '&' character in XML source. Fixed now, thanks > > for the report! > > Thanks -- that fixes the first error. Now I'm left with the second, > xsl:element : no namespace bound to prefix xi. I found some time to dig into this a little deeper. Turns out its due to these not being loaded > warning: failed to load external entity "src/hash.xml" > XInclude: could not load src/hash.xml, and no fallback was found > warning: failed to load external entity "src/static_assert.xml" > XInclude: could not load src/static_assert.xml, and no fallback was found > warning: failed to load external entity "src/type_traits.xml" > XInclude: could not load src/type_traits.xml, and no fallback was found and thats because <xi:include href="hash.xml"/> in src/boost.xml causes xsltproc to search for "./src/hash.xml", and not "./hash.xml", in the directories specified by --path on the command line. Including "../hash.xml" fixes it. The following patch to boost.xml works for me, but I dont really know enough about the boost docbook to know if its the right approach. % cvs diff boost.xml Index: boost.xml =================================================================== RCS file: /cvsroot/boost/boost/doc/src/boost.xml,v retrieving revision 1.15 diff -u -r1.15 boost.xml --- boost.xml 17 Apr 2005 10:43:53 -0000 1.15 +++ boost.xml 10 Jun 2005 18:09:45 -0000 @@ -302,7 +302,7 @@ </libraryinfo> </library> - <xi:include href="hash.xml"/> + <xi:include href="../hash.xml"/> <library name="Graph" dirname="graph" html-only="1"> <libraryinfo> @@ -650,7 +650,7 @@ </libraryinfo> </library> - <xi:include href="static_assert.xml"/> + <xi:include href="../static_assert.xml"/> <xi:include href="../../libs/algorithm/string/doc/string_algo.xml"/> @@ -705,7 +705,7 @@ </libraryinfo> </library> - <xi:include href="type_traits.xml"/> + <xi:include href="../type_traits.xml"/> <library name="uBLAS" dirname="numeric/ublas" html-only="1"> <libraryinfo>

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Using minimal boost header files.
by Junkeh 10 Jun '05

10 Jun '05

Dear Sirs/Madams, I would like to be able to use some of the features of the boost library but only a very tiny portion of them! May I ask whether it is possible to do this and therefore distribute much less than 17Mbs worth of mostly unused code? Yours, Dan.

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Serialization of heterogeneous sequence using shared_ptr<void>
by Sean Kelly 10 Jun '05

10 Jun '05

Dear All, I'm trying to figure out if something like the below is possible with the serialization library. The idea is to serialize a heterogeneous sequence using shared_pointer<void>. thanks for any help Sean void hetero_sequence() { // create and open a character archive for output std::ofstream ofs("dictionary.pickle"); boost::archive::text_oarchive oa(ofs); std::deque<boost::shared_ptr<void> > sequence; sequence.push_back(boost::shared_ptr<string>(new string("random string"))); sequence.push_back(boost::shared_ptr<double>(new double(3.1415627))); sequence.push_back(boost::shared_ptr<bool>(new bool(false))); // write class instance to archive oa << sequence; // close archive ofs.close(); }

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boost/limits.hpp and GCC 3.2.3
by Dave Steffen 10 Jun '05

10 Jun '05

Folks, It looks to me like numeric_limits on GCC 3.2.3 is broken; specifically, numeric_limits<double>::has_infinity = false numeric_limits<double>::infinity() == 0 I suspect boost/limits.hpp could fix this if it knew to do so; but since <limits> exists, boost/limits.hpp doesn't 'fix' anything. Does anyone have thoughts about (reasonably portable) ways to "convince" boost/limits.hpp to provide numeric_limits even if the compiler already has one? Thanks! ---------------------------------------------------------------------- Dave Steffen, Ph.D. "There are two ways to write error-free Software Engineer IV programs; only the third one works." Numerica Corporation ph (970) 419-8343 x27 "Pie are not square. Pie are round. fax (970) 223-6797 Cornbread are square" dgsteffen(a)numerica.us ... anon (usenet)

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Boost.Serialization and Pointers to Objects of Derived Classes
by Richard Jennings 10 Jun '05

10 Jun '05

I am using Boost 1.32.0 with Borland C++ Builder 6 and attempting to serialize an object via a pointer to a base class but I am getting a runtime exception of "unregistered void cast". Having read the page in the documentation on Runtime Casting, I thought I should be able to use boost::serialization::void_cast_register<Base, Derived>(0,0); to associate the base and derived classes, but I can't get it to work. If I use the alternate method (to serialize the base class and provide a do-nothing serialize method in the base class) then it works fine. Any ideas what's wrong? The program below demonstrates the problem. Class A uses the serialize base class method and that's ok while class B uses the void_cast_register method and an exception is thrown when it's serialized: ----- #include <iostream> #include <boost/filesystem/fstream.hpp> #include <boost/filesystem/path.hpp> #include <boost/archive/xml_oarchive.hpp> #include <boost/serialization/export.hpp> #include <boost/serialization/base_object.hpp> #if defined(_DEBUG) # pragma link "libboost_serialization-bcb-mt-d-1_32.lib" #else # pragma link "libboost_serialization-bcb-mt-1_32.lib" #endif class Base_c { public: virtual void SomeMethod() = 0; private: friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) {} }; BOOST_IS_ABSTRACT(Base_c) class A : public Base_c { public: A() : m_Id("A"){}; void SomeMethod(){}; private: friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { /* boost::serialization::void_cast_register<Base_c, A>(0,0); */ ar & boost::serialization::make_nvp("Base", boost::serialization::base_object<Base_c>(*this)); ar & BOOST_SERIALIZATION_NVP(m_Id); } std::string const m_Id; }; BOOST_CLASS_EXPORT(A); class B : public Base_c { public: B() : m_Id("B"){}; void SomeMethod(){}; private: friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { boost::serialization::void_cast_register<Base_c, B>(0,0); /* ar & boost::serialization::make_nvp("Base", boost::serialization::base_object<Base_c>(*this)); */ ar & BOOST_SERIALIZATION_NVP(m_Id); } std::string const m_Id; }; BOOST_CLASS_EXPORT(B) main(int, char**) { boost::filesystem::ofstream OfStream(boost::filesystem::path("D:\\Temp\\SerialisationText.xml", boost::filesystem::native)); boost::archive::xml_oarchive Archive(OfStream); try { Base_c *pBase, *pBase2; pBase = new A(); pBase2 = new B(); Archive & boost::serialization::make_nvp("AByBasePointer", pBase); std::cout << "Serialised A ok\n"; Archive & boost::serialization::make_nvp("BByBasePointer", pBase2); std::cout << "Serialised B ok\n"; } catch (std::exception& E) { std::cout << "Exception: " << E.what(); } } ----- The output is: Serialised A ok Exception: unregistered void cast

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Boost.Serialization 1.32 trouble reading back an object first serialized in an std::vector then by pointer
by James Conrad 10 Jun '05

10 Jun '05

I'm evaluating the Boost.Serialization for use internal use as an interchange format between a number of loose knit projects, and I've run into a bit of trouble. I'm using Vc 7.1 in Visual Studio .NET 2003. It seems to me that, if I serialize an object first in an std::vector, and then serialize it later by pointer, that there is trouble reading it back. I boiled down the reproduction case to as little code as possible below. When newPolygon (below) is loaded from the archive, I get a bogus pointer for m_pLastVertex. If I serialize using a binary archive, I hit an assert in basic_iarchive.cpp line 371: assert(new_cid == cid); Where cid is 576 and new_cid is 2. Any help with this would be appriciated, Thanks in advance, -james conrad #include <fstream> #define BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP #include <boost/archive/xml_oarchive.hpp> #include <boost/archive/xml_iarchive.hpp> #include <boost/serialization/vector.hpp> #include <boost/serialization/export.hpp> class Vector3 { public: Vector3() {} Vector3( float x, float y, float z ) : _x(x), _y(y), _z(z) {} friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & BOOST_SERIALIZATION_NVP(_x); ar & BOOST_SERIALIZATION_NVP(_y); ar & BOOST_SERIALIZATION_NVP(_z); } float _x,_y,_z; }; BOOST_CLASS_EXPORT_GUID(Vector3, "Vector3") class Polygon { public: Polygon() : m_pLastVertex( NULL ) {} friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & BOOST_SERIALIZATION_NVP(m_vertices); ar & BOOST_SERIALIZATION_NVP(m_pLastVertex); } void addVertex( const Vector3& vert ) { m_vertices.push_back( vert ); m_pLastVertex = &m_vertices.back(); } std::vector<Vector3> m_vertices; Vector3* m_pLastVertex; }; BOOST_CLASS_EXPORT_GUID(Polygon, "Polygon") int main( int argc, char* argv[] ) { // create class instance Polygon poly; poly.addVertex( Vector3( 0.0f, 1.0f, 0.0f ) ); poly.addVertex( Vector3( 1.0f, 0.12565f, 0.2f ) ); poly.addVertex( Vector3( 15.0f, 1.22f, 6.7f ) ); poly.addVertex( Vector3( 1.43f, 1.55f, 2.5f ) ); // create and open a character archive for output std::ofstream ofsx( "testout.xml" ); boost::archive::xml_oarchive oax( ofsx ); // write class instance to archive oax << BOOST_SERIALIZATION_NVP(poly); // close archive ofsx.close(); Polygon newPoly; // create and open an archive for input std::ifstream ifs("testout.xml", std::ios::binary); boost::archive::xml_iarchive ia(ifs); // read class state from archive ia >> BOOST_SERIALIZATION_NVP( newPoly ); // close archive ifs.close(); return 0; } Here is an example of the .xml output: <?xml version="1.0" encoding="UTF-8" standalone="yes" ?> <!DOCTYPE boost_serialization> <boost_serialization signature="serialization::archive" version="3"> <poly class_id="0" tracking_level="1" version="0" object_id="_0"> <m_vertices class_id="1" tracking_level="0" version="0"> <count>4</count> <item class_id="2" tracking_level="1" version="0" object_id="_1"> <_x>0</_x> <_y>1</_y> <_z>0</_z> </item> <item object_id="_2"> <_x>1</_x> <_y>0.12565</_y> <_z>0.2</_z> </item> <item object_id="_3"> <_x>15</_x> <_y>1.22</_y> <_z>6.6999998</_z> </item> <item object_id="_4"> <_x>1.4299999</_x> <_y>1.55</_y> <_z>2.5</_z> </item> </m_vertices> <m_pLastVertex class_id_reference="2" object_id_reference="_4"></m_pLastVertex> </poly>

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Re: Re: [Boost-users] Error Linking A Simple Application using
by Dinesh Pillay 10 Jun '05

10 Jun '05

Hi, It still does not link, even when I tried the two commands you posted. I'm at a loss here, I just don't understand the nature of the error. Regards, Dinesh. Message: 3 Date: Wed, 8 Jun 2005 18:08:32 -0400 From: Caleb Epstein <caleb.epstein(a)gmail.com> Subject: Re: [Boost-users] Error Linking A Simple Application using Boost.Any To: boost-users(a)lists.boost.org Message-ID: <989aceac050608150830caa3e7(a)mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 On 6/7/05, Dinesh Pillay <dpillay(a)gmail.com> wrote: > >g++ -IC:\Boost\include\boost-1_32 -pedantic -s -O3 -fno-exceptions -c > boost_trial.cpp -o boost_trial.o > > But when I try to link the file using: > g++ -IC:\Boost\include\boost-1_32 boost_trial.cpp -o boost_trial.exe > > I get the following errors: > > /mingw/lib/libstdc++.a(eh_personality.o)(.data$_ZTISt9exception[typeinfo > for std::exception]+0x0): multiple definition of `typeinfo for > std::exception' > C:\DOCUME~1\dpilla\LOCALS~1\Temp/ccoBaaaa.o(.rdata$_ZTISt9exception[typeinfo > for std::exception]+0x0):boost_trial.cpp: first defined here > /mingw/lib/libstdc++.a(eh_personality.o)(.text$_ZTSSt9exception[typeinfo > name for std::exception]+0x0): multiple definition of `typeinfo name > for std::exception' > C:\DOCUME~1\dpilla\LOCALS~1\Temp/ccoBaaaa.o(.rdata$_ZTSSt9exception[typeinfo > name for std::exception]+0x0):boost_trial.cpp: first defined here > /mingw/lib/libstdc++.a(functexcept.o)(.data$_ZTISt8bad_cast[typeinfo > for std::bad_cast]+0x0): multiple definition of `typeinfo for > std::bad_cast' > C:\DOCUME~1\dpilla\LOCALS~1\Temp/ccoBaaaa.o(.rdata$_ZTISt8bad_cast[typeinfo > for std::bad_cast]+0x0):boost_trial.cpp: first defined here > /mingw/lib/libstdc++.a(functexcept.o)(.text$_ZTSSt8bad_cast[typeinfo > name for std::bad_cast]+0x0): multiple definition of `typeinfo name > for std::bad_cast' > C:\DOCUME~1\dpilla\LOCALS~1\Temp/ccoBaaaa.o(.rdata$_ZTSSt8bad_cast[typeinfo > name for std::bad_cast]+0x0):boost_trial.cpp: first defined here > collect2: ld returned 1 exit status > > I have no idea why this is happening! What am I doing wrong? Somebody > please tell me the right way to link the file. > >> I suspect the problem is you have disabled exceptions >> (-fno-exceptions). Are you doing this for any particular reason? >> Also, why are you stripping your object files (-s in the compile >> line)? Hopefully gcc is ignoring this, but this may also be the cause >> of your grief. >> g++ -Ic:/boost/include/boost-1_32 -O3 -c boost_trial.cpp >> g++ -s -o boost_trial.exe boost_trial.o >> -- >> Caleb Epstein >> caleb dot epstein at gmail dot com

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RE: [Boost-users] Re: Boost.Serialization 1.32 trouble reading backanobject first serialized in an std::vector then by pointer
by Yan Zhang 09 Jun '05

09 Jun '05

It strikes me that you can serialize the object and the address to it and then deserialize the object and the address which now points to the deserialized object. I used MFC serialization and I remembered that you cannot do it. Do I misunderstand something here? Yan -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Robert Ramey Sent: Wednesday, June 08, 2005 8:51 PM To: boost-users(a)lists.boost.org Subject: [Boost-users] Re: Boost.Serialization 1.32 trouble reading backanobject first serialized in an std::vector then by pointer It just occured to me that this is an old problem which has now been fixed in the CVS. The problem occurs with version 1.32 when addresses of objects are stored in containers. The problem occurs because objects are deserialized to a temporary and then moved into the container. This has been addressed by adding the function reset_object_address calling it during the deserialzation. This is explained in the CVS version. Robert Ramey Robert Ramey wrote: > I'll look at this. Give me a couple of days. > > Robert Ramey > > James Conrad wrote: >> I'm evaluating the Boost.Serialization for use internal use as an >> interchange format between a number of loose knit projects, and I've >> run into a bit of trouble. >> >> I'm using Vc 7.1 in Visual Studio .NET 2003. >> >> It seems to me that, if I serialize an object first in an >> std::vector, and then serialize it later by pointer, that there is >> trouble reading it back. >> >> I boiled down the reproduction case to as little code as possible >> below. >> >> When newPolygon (below) is loaded from the archive, I get a bogus >> pointer for m_pLastVertex. If I serialize using a binary archive, I >> hit an assert in basic_iarchive.cpp line 371: >> >> assert(new_cid == cid); >> >> Where cid is 576 and new_cid is 2. >> >> Any help with this would be appriciated, >> >> Thanks in advance, >> -james conrad >> >> >> #include <fstream> >> >> #define BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP >> >> #include <boost/archive/xml_oarchive.hpp> >> #include <boost/archive/xml_iarchive.hpp> >> >> #include <boost/serialization/vector.hpp> >> #include <boost/serialization/export.hpp> >> >> class Vector3 >> { >> public: >> Vector3() {} >> Vector3( float x, float y, float z ) : _x(x), _y(y), _z(z) {} >> >> friend class boost::serialization::access; >> template<class Archive> >> void serialize(Archive & ar, const unsigned int version) >> { >> ar & BOOST_SERIALIZATION_NVP(_x); >> ar & BOOST_SERIALIZATION_NVP(_y); >> ar & BOOST_SERIALIZATION_NVP(_z); >> } >> >> float _x,_y,_z; >> }; >> >> BOOST_CLASS_EXPORT_GUID(Vector3, "Vector3") >> >> class Polygon >> { >> public: >> Polygon() : m_pLastVertex( NULL ) {} >> >> friend class boost::serialization::access; >> template<class Archive> >> void serialize(Archive & ar, const unsigned int version) >> { >> ar & BOOST_SERIALIZATION_NVP(m_vertices); >> ar & BOOST_SERIALIZATION_NVP(m_pLastVertex); >> } >> >> void addVertex( const Vector3& vert ) >> { >> m_vertices.push_back( vert ); >> m_pLastVertex = &m_vertices.back(); >> } >> >> std::vector<Vector3> m_vertices; >> Vector3* m_pLastVertex; >> }; >> >> BOOST_CLASS_EXPORT_GUID(Polygon, "Polygon") >> >> int main( int argc, char* argv[] ) >> { >> // create class instance >> Polygon poly; >> poly.addVertex( Vector3( 0.0f, 1.0f, 0.0f ) ); >> poly.addVertex( Vector3( 1.0f, 0.12565f, 0.2f ) ); >> poly.addVertex( Vector3( 15.0f, 1.22f, 6.7f ) ); >> poly.addVertex( Vector3( 1.43f, 1.55f, 2.5f ) ); >> >> // create and open a character archive for output >> std::ofstream ofsx( "testout.xml" ); >> boost::archive::xml_oarchive oax( ofsx ); >> >> // write class instance to archive >> oax << BOOST_SERIALIZATION_NVP(poly); >> >> // close archive >> ofsx.close(); >> >> Polygon newPoly; >> >> // create and open an archive for input >> std::ifstream ifs("testout.xml", std::ios::binary); >> boost::archive::xml_iarchive ia(ifs); >> // read class state from archive >> ia >> BOOST_SERIALIZATION_NVP( newPoly ); >> // close archive >> ifs.close(); >> >> return 0; >> } >> >> >> Here is an example of the .xml output: >> >> <?xml version="1.0" encoding="UTF-8" standalone="yes" ?> >> <!DOCTYPE boost_serialization> >> <boost_serialization signature="serialization::archive" version="3"> >> <poly class_id="0" tracking_level="1" version="0" object_id="_0"> >> <m_vertices class_id="1" tracking_level="0" version="0"> >> <count>4</count> >> <item class_id="2" tracking_level="1" version="0" >> object_id="_1"> <_x>0</_x> >> <_y>1</_y> >> <_z>0</_z> >> </item> >> <item object_id="_2"> >> <_x>1</_x> >> <_y>0.12565</_y> >> <_z>0.2</_z> >> </item> >> <item object_id="_3"> >> <_x>15</_x> >> <_y>1.22</_y> >> <_z>6.6999998</_z> >> </item> >> <item object_id="_4"> >> <_x>1.4299999</_x> >> <_y>1.55</_y> >> <_z>2.5</_z> >> </item> >> </m_vertices> >> <m_pLastVertex class_id_reference="2" >> object_id_reference="_4"></m_pLastVertex> >> </poly> _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

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Serialization - no & operator for primitives
by Marcin Tustin 09 Jun '05

09 Jun '05

I'm using a recent (a few days old) cvs version of boost, and the serialization libraries, and Visual Studio 7.1 is producing the error below. This is only happening to classes which I am exporting (like BOOST_CLASS_EXPORT_GUID(D2::Message,"D2::Message");). The reason I am exporting them is that they are in many cases a) subclasses of each other b) accessed through a pointer. Any help would be deeply appreciated. My code is: template<class Archive > static void serialize(Archive & ar, D2::Message& g, const unsigned int version) { ar & g.getType(); // an int - error complains about this line. ar & g.getSender(); // a string ar & g.getMessage(); // a string } Error message: c:\D2\API\NewClient\EnhancedMessageHandler.h(132) : error C2679: binary '&' : no operator found which takes a right-hand operand of type 'uint32' (or there is no acceptable conversion) C:\boost\boost-cvs-20050606\boost\boost\serialization\serialization.hpp( 140) : see reference to function template instantiation 'void boost::serialization::serialize<Archive>(Archive &,D2::Message &,const unsigned int)' being compiled with [ Archive=boost::archive::detail::export_impl::for_each_archive<boost::arc hive::detail::export_impl::for_each_archive<boost::archive::detail::know n_archive_types::type,IplJrsMediaTimePoint>::tail,IplJrsMediaTimePoint>: :head ] C:\boost\boost-cvs-20050606\boost\boost\archive\detail\iserializer.hpp(1 61) : see reference to function template instantiation 'void boost::serialization::serialize_adl<Archive,T>(Archive &,T &,const unsigned int)' being compiled with [ Archive=boost::archive::detail::export_impl::for_each_archive<boost::arc hive::detail::export_impl::for_each_archive<boost::archive::detail::know n_archive_types::type,IplJrsMediaTimePoint>::tail,IplJrsMediaTimePoint>: :head, T=D2::Message ] C:\boost\boost-cvs-20050606\boost\boost\serialization\extended_type_info _typeid.hpp(71) : while compiling class-template member function 'void boost::archive::detail::iserializer<Archive,T>::load_object_data(boost:: archive::detail::basic_iarchive &,void *,const unsigned int) const' with [ Archive=boost::archive::detail::export_impl::for_each_archive<boost::arc hive::detail::export_impl::for_each_archive<boost::archive::detail::know n_archive_types::type,D2::Message>::tail,D2::Message>::head, T=D2::Message ] C:\boost\boost-cvs-20050606\boost\boost\archive\detail\iserializer.hpp(1 72) : see reference to class template instantiation 'boost::archive::detail::iserializer<Archive,T>' being compiled with [ Archive=boost::archive::detail::export_impl::for_each_archive<boost::arc hive::detail::export_impl::for_each_archive<boost::archive::detail::know n_archive_types::type,D2::Message>::tail,D2::Message>::head, T=D2::Message ] C:\boost\boost-cvs-20050606\boost\boost\archive\detail\iserializer.hpp(1 71) : while compiling class-template member function 'const boost::archive::detail::basic_iserializer &boost::archive::detail::pointer_iserializer<T,Archive>::get_basic_seria lizer(void) const' with [ T=D2::Message, Archive=boost::archive::detail::export_impl::for_each_archive<boost::arc hive::detail::export_impl::for_each_archive<boost::archive::detail::know n_archive_types::type,D2::Message>::tail,D2::Message>::head ] C:\boost\boost-cvs-20050606\boost\boost\archive\detail\iserializer.hpp(5 01) : see reference to class template instantiation 'boost::archive::detail::pointer_iserializer<T,Archive>' being compiled with [ T=D2::Message, Archive=boost::archive::detail::export_impl::for_each_archive<boost::arc hive::detail::export_impl::for_each_archive<boost::archive::detail::know n_archive_types::type,D2::Message>::tail,D2::Message>::head ] C:\boost\boost-cvs-20050606\boost\boost\serialization\export.hpp(78) : see reference to function template instantiation 'const boost::archive::detail::basic_pointer_iserializer &boost::archive::detail::instantiate_pointer_iserializer<Archive,T>(Arch ive *,T *)' being compiled with [ Archive=boost::archive::detail::export_impl::for_each_archive<boost::arc hive::detail::export_impl::for_each_archive<boost::archive::detail::know n_archive_types::type,D2::Message>::tail,D2::Message>::head, T=D2::Message ] C:\boost\boost-cvs-20050606\boost\boost\serialization\export.hpp(74) : while compiling class-template member function 'void boost::archive::detail::export_impl::archive<Archive,T>::i::invoke(void) ' with [ Archive=boost::archive::detail::export_impl::for_each_archive<boost::arc hive::detail::export_impl::for_each_archive<boost::archive::detail::know n_archive_types::type,D2::Message>::tail,D2::Message>::head, T=D2::Message ] C:\boost\boost-cvs-20050606\boost\boost\serialization\export.hpp(105) : see reference to class template instantiation 'boost::archive::detail::export_impl::archive<Archive,T>::i' being compiled with [ Archive=boost::archive::detail::export_impl::for_each_archive<boost::arc hive::detail::export_impl::for_each_archive<boost::archive::detail::know n_archive_types::type,D2::Message>::tail,D2::Message>::head, T=D2::Message ] C:\boost\boost-cvs-20050606\boost\boost\serialization\export.hpp(89) : while compiling class-template member function 'void boost::archive::detail::export_impl::archive<Archive,T>::instantiate(voi d)' with [ Archive=boost::archive::detail::export_impl::for_each_archive<boost::arc hive::detail::export_impl::for_each_archive<boost::archive::detail::know n_archive_types::type,D2::Message>::tail,D2::Message>::head, T=D2::Message ] C:\boost\boost-cvs-20050606\boost\boost\serialization\export.hpp(116) : see reference to class template instantiation 'boost::archive::detail::export_impl::archive<Archive,T>' being compiled with [ Archive=boost::archive::detail::export_impl::for_each_archive<boost::arc hive::detail::export_impl::for_each_archive<boost::archive::detail::know n_archive_types::type,D2::Message>::tail,D2::Message>::head, T=D2::Message ] C:\boost\boost-cvs-20050606\boost\boost\serialization\export.hpp(115) : while compiling class-template member function 'void boost::archive::detail::export_impl::for_each_archive<ASeq,T>::instantia te(void)' with [ ASeq=boost::archive::detail::export_impl::for_each_archive<boost::archiv e::detail::known_archive_types::type,D2::Message>::tail, T=D2::Message ] C:\boost\boost-cvs-20050606\boost\boost\serialization\export.hpp(122) : see reference to class template instantiation 'boost::archive::detail::export_impl::for_each_archive<ASeq,T>' being compiled with [ ASeq=boost::archive::detail::export_impl::for_each_archive<boost::archiv e::detail::known_archive_types::type,D2::Message>::tail, T=D2::Message ] Marcin Tustin IT Innovation Centre 2 Venture Road Chilworth Science Park Southampton, SO16 7NP, UK tel: +44 23 8076 0834 fax: +44 23 8076 0833 mailto:mt@it-innovation.soton.ac.uk http://www.it-innovation.soton.ac.uk

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RE: [Boost-users] Re: Boost.Serialization 1.32 trouble reading ba ck an object first serialized in an std::vector then by pointer
by Olivier Vanden Bos 09 Jun '05

09 Jun '05

What is BOOST_SERIALIZATION_NVP ? I use a lot the serialization with all STL containers possible and much more complex example than that, i have no pb... (perhaps too complex for the Vc7.1 compiler..) But i never use this macro.... - VDB - "LNK1210: exceeded internal ILK size limit" -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Robert Ramey Sent: 8 juin 2005 12:39 To: boost-users(a)lists.boost.org Subject: [Boost-users] Re: Boost.Serialization 1.32 trouble reading back an object first serialized in an std::vector then by pointer I'll look at this. Give me a couple of days. Robert Ramey James Conrad wrote: > I'm evaluating the Boost.Serialization for use internal use as an > interchange format between a number of loose knit projects, and I've > run into a bit of trouble. > > I'm using Vc 7.1 in Visual Studio .NET 2003. > > It seems to me that, if I serialize an object first in an std::vector, > and then serialize it later by pointer, that there is trouble reading > it back. > > I boiled down the reproduction case to as little code as possible > below. > > When newPolygon (below) is loaded from the archive, I get a bogus > pointer for m_pLastVertex. If I serialize using a binary archive, I > hit an assert in basic_iarchive.cpp line 371: > > assert(new_cid == cid); > > Where cid is 576 and new_cid is 2. > > Any help with this would be appriciated, > > Thanks in advance, > -james conrad > > > #include <fstream> > > #define BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP > > #include <boost/archive/xml_oarchive.hpp> > #include <boost/archive/xml_iarchive.hpp> > > #include <boost/serialization/vector.hpp> > #include <boost/serialization/export.hpp> > > class Vector3 > { > public: > Vector3() {} > Vector3( float x, float y, float z ) : _x(x), _y(y), _z(z) {} > > friend class boost::serialization::access; > template<class Archive> > void serialize(Archive & ar, const unsigned int version) > { > ar & BOOST_SERIALIZATION_NVP(_x); > ar & BOOST_SERIALIZATION_NVP(_y); > ar & BOOST_SERIALIZATION_NVP(_z); > } > > float _x,_y,_z; > }; > > BOOST_CLASS_EXPORT_GUID(Vector3, "Vector3") > > class Polygon > { > public: > Polygon() : m_pLastVertex( NULL ) {} > > friend class boost::serialization::access; > template<class Archive> > void serialize(Archive & ar, const unsigned int version) > { > ar & BOOST_SERIALIZATION_NVP(m_vertices); > ar & BOOST_SERIALIZATION_NVP(m_pLastVertex); > } > > void addVertex( const Vector3& vert ) > { > m_vertices.push_back( vert ); > m_pLastVertex = &m_vertices.back(); > } > > std::vector<Vector3> m_vertices; > Vector3* m_pLastVertex; > }; > > BOOST_CLASS_EXPORT_GUID(Polygon, "Polygon") > > int main( int argc, char* argv[] ) > { > // create class instance > Polygon poly; > poly.addVertex( Vector3( 0.0f, 1.0f, 0.0f ) ); > poly.addVertex( Vector3( 1.0f, 0.12565f, 0.2f ) ); > poly.addVertex( Vector3( 15.0f, 1.22f, 6.7f ) ); > poly.addVertex( Vector3( 1.43f, 1.55f, 2.5f ) ); > > // create and open a character archive for output > std::ofstream ofsx( "testout.xml" ); > boost::archive::xml_oarchive oax( ofsx ); > > // write class instance to archive > oax << BOOST_SERIALIZATION_NVP(poly); > > // close archive > ofsx.close(); > > Polygon newPoly; > > // create and open an archive for input > std::ifstream ifs("testout.xml", std::ios::binary); > boost::archive::xml_iarchive ia(ifs); > // read class state from archive > ia >> BOOST_SERIALIZATION_NVP( newPoly ); > // close archive > ifs.close(); > > return 0; > } > > > Here is an example of the .xml output: > > <?xml version="1.0" encoding="UTF-8" standalone="yes" ?> > <!DOCTYPE boost_serialization> > <boost_serialization signature="serialization::archive" version="3"> > <poly class_id="0" tracking_level="1" version="0" object_id="_0"> > <m_vertices class_id="1" tracking_level="0" version="0"> > <count>4</count> > <item class_id="2" tracking_level="1" version="0" > object_id="_1"> <_x>0</_x> > <_y>1</_y> > <_z>0</_z> > </item> > <item object_id="_2"> > <_x>1</_x> > <_y>0.12565</_y> > <_z>0.2</_z> > </item> > <item object_id="_3"> > <_x>15</_x> > <_y>1.22</_y> > <_z>6.6999998</_z> > </item> > <item object_id="_4"> > <_x>1.4299999</_x> > <_y>1.55</_y> > <_z>2.5</_z> > </item> > </m_vertices> > <m_pLastVertex class_id_reference="2" > object_id_reference="_4"></m_pLastVertex> > </poly> _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

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Error Linking A Simple Application using Boost.Any
by Dinesh Pillay 08 Jun '05

08 Jun '05

Hello all, I'm really new to boost and I tried compiling and then linking the following program : #include <iostream> #include <boost/any.hpp> int main() { boost::any a = 8; int var = boost::any_cast<int>(a); std::cout << var << std::endl; system("pause"); return 0; } I am able to compile the file with the command: >g++ -IC:\Boost\include\boost-1_32 -pedantic -s -O3 -fno-exceptions -c boost_trial.cpp -o boost_trial.o But when I try to link the file using: g++ -IC:\Boost\include\boost-1_32 boost_trial.cpp -o boost_trial.exe I get the following errors: /mingw/lib/libstdc++.a(eh_personality.o)(.data$_ZTISt9exception[typeinfo for std::exception]+0x0): multiple definition of `typeinfo for std::exception' C:\DOCUME~1\dpilla\LOCALS~1\Temp/ccoBaaaa.o(.rdata$_ZTISt9exception[typeinfo for std::exception]+0x0):boost_trial.cpp: first defined here /mingw/lib/libstdc++.a(eh_personality.o)(.text$_ZTSSt9exception[typeinfo name for std::exception]+0x0): multiple definition of `typeinfo name for std::exception' C:\DOCUME~1\dpilla\LOCALS~1\Temp/ccoBaaaa.o(.rdata$_ZTSSt9exception[typeinfo name for std::exception]+0x0):boost_trial.cpp: first defined here /mingw/lib/libstdc++.a(functexcept.o)(.data$_ZTISt8bad_cast[typeinfo for std::bad_cast]+0x0): multiple definition of `typeinfo for std::bad_cast' C:\DOCUME~1\dpilla\LOCALS~1\Temp/ccoBaaaa.o(.rdata$_ZTISt8bad_cast[typeinfo for std::bad_cast]+0x0):boost_trial.cpp: first defined here /mingw/lib/libstdc++.a(functexcept.o)(.text$_ZTSSt8bad_cast[typeinfo name for std::bad_cast]+0x0): multiple definition of `typeinfo name for std::bad_cast' C:\DOCUME~1\dpilla\LOCALS~1\Temp/ccoBaaaa.o(.rdata$_ZTSSt8bad_cast[typeinfo name for std::bad_cast]+0x0):boost_trial.cpp: first defined here collect2: ld returned 1 exit status I have no idea why this is happening! What am I doing wrong? Somebody please tell me the right way to link the file. Thanks a million. Regards, Dinesh Pillay. -- - Perfection or Nothing.

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Re: [Boost-users] Boost.Serialization 1.32 trouble reading back anobject first serialized in an std::vector then by pointer
by JOAQUIN LOPEZ MU?Z 08 Jun '05

08 Jun '05

----- Mensaje original ----- De: James Conrad <james(a)jamesconrad.org> Fecha: Miércoles, Junio 8, 2005 2:23 am Asunto: [Boost-users] Boost.Serialization 1.32 trouble reading back an object first serialized in an std::vector then by pointer > I'm evaluating the Boost.Serialization for use internal use as an > interchange format between a number of loose knit projects, and > I've run > into a bit of trouble. > > I'm using Vc 7.1 in Visual Studio .NET 2003. > > It seems to me that, if I serialize an object first in an std::vector, > and then serialize it later by pointer, that there is trouble > reading it > back. > [...] I think you've hit a problem which was discussed some months ago: http://thread.gmane.org/gmane.comp.lib.boost.devel/114537 If this is the same issue, you'll be happy to know that the problem has been solved in the Boost 1.33 version of Boost.Serialization; you might want to download the latest CVS and give your code a try. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

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Mailing list outage
by David Abrahams 08 Jun '05

08 Jun '05

-- Dave Abrahams Boost Consulting www.boost-consulting.com

1 0

Exception from regexp timer test
by Jeff 08 Jun '05

08 Jun '05

I didn't see this in the reported bugs so I'm not sure whether its a known problem or not. C:\boost\>timer Enter expression (or "quit" to exit): ([[:digit:]]{1,}|[[:space:]]{1,}){1,}[[:alpha:]]{1,} Enter string to search (or "quit" to exit): 22222222222222222222 abnormal program termination ---- Built with MS VC++ 6.0 on a x86 (Pentium M, Family 6, Model 9 running WinXP SP2. C:\> cl Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 12.00.8804 for 80x86 Copyright (C) Microsoft Corp 1984-1998. All rights reserved. Boost.regexp and the examples were built from boost_1_32_0.zip using vc6.mak.

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[boost][tokenizer] std::wstring question
by David Klein 08 Jun '05

08 Jun '05

hi, Is there a reason why the template params for the tokenizer class are std::string? This makes it "harder" to use it with std::wstring. You have to write: tokenizer<char_separator<wchar_t>, std::wstring::const_iterator, std::wstring> tkz; ... Instead of: tokenizer<char_separator<wchar_t> > tkz; ... (i guess i'm very lazy ;) I changed the scope of the string_type typedef for the xxx_separator classes to public, and used this typedef in the tokenizer template params. Now std::wstring works like std::string for me. *** token_functions.hpp *** class char_separator/char_delimiters_separator/... { public: typedef std::basic_string<Char,Traits> string_type; ... }; *** tokenizer.hpp *** template < typename TokenizerFunc = char_delimiters_separator<char>, typename Iterator = /*std::string::const_iterator*/ TokenizerFunc::string_type::const_iterator, typename Type = /*std::string*/ TokenizerFunc::string_type > class tokenizer {...}; regards /dave

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Boost Test - catching assertions, marking them as a success?
by Kevin Wheatley 08 Jun '05

08 Jun '05

Hi, I'm looking at using Boost Test as a means to carry out unit tests and wondered if there is a guard for assertions like there is for exception handling to say, "this test should assert()", fail if it does not. This would be really handy, especially if it was available in the Auto unit tests: BOOST_AUTO_UNIT_TEST_SHOULD_ASSERT( object_calls_assert ) { myobject foo; foo.callAssert(); } or something similar. Kevin -- | Kevin Wheatley, Cinesite (Europe) Ltd | Nobody thinks this | | Senior Technology | My employer for certain | | And Network Systems Architect | Not even myself |

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RE: [Boost-users] Problem with boost::signal. How to call just one slotin signal
by Brian Braatz 08 Jun '05

08 Jun '05

Forgive me. I reviewed your code- but I am having a hard time totally seeing what you are trying to do (by the code alone). Allow me to offer a suggestion from what I understand of your description of the problem: 1- For your special callback, save it off somewhere as a boost.function<> 2- then call the boost.function<> you have saved before calling your signals It is not clear to me if you want the "special" callback to also be in the signal. If so, you can add it (and the above still works) Hope that helps Brian > -----Original Message----- > From: boost-users-bounces(a)lists.boost.org [mailto:boost-users- > bounces(a)lists.boost.org] On Behalf Of Juho Mäkinen > Sent: Monday, June 06, 2005 11:56 PM > To: boost-users(a)lists.boost.org > Subject: [Boost-users] Problem with boost::signal. How to call just one > slotin signal > > Hello. > > I'm having problems with boost::signal. I have a simple callback > system: > > typedef boost::signal<void (const String &)> StringCallbacks; > TSharedPtr<StringCallbacks> stringCallbacks; > > stringCallbacks contains void (Const String &) -callback functions. > New callback functions are registered into the callback system with > registerCallback -function: > > template<class VarType> class SettingUpdater { > private: > VarType & reference; > > SettingUpdater(VarType & var) : reference(var) { } > > public: > void operator()(const String & setting) > { > // do someting irrelevant for the question here > // with the reference -variable > } > }; > > boost::signals::connection registerCallback(StringCallbacks::slot_type > callback) > { > // PROBLEM: I'd like to call the callback once without calling every > callback > // which are possibly registered already into the signal before this. > > // Register the new callback into the signal. > return stringCallbacks.get()->connect(callback); > } > > The actual usage of registerCallback: > int localVariable; > registerCallback(SettingUpdater<int>(localVariable)); > > Question: > As you might already see above, I'd like to call the callback function > once in the registerCallback function without calling every callback > already registered in the stringCallbacks signal. > I first tried something like > String param = "foo"; > callback(param); > but that won't compile. > > I also tried callback.get_slot_function()(param); > That compiles, but it won't execute the operator() -function in > SettingUpdater. > > Calling the signal will execute all callbacks registered, so the > SettingUpdater > function seems working. How I can execute the operator() function > in SettingUpdater<> inside registerCallback function by the > callback parameter passed to registerCallback function? > > Thanks in advance =) > > - Juho Mäkinen > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users

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boost::filesystem bug for win98
by Sebastien Martel 07 Jun '05

07 Jun '05

Hello, The windows implementation for find_first_file is flawed for windows 98. The problem is appending \* to the dir path: this is not supported for win98. Here is a possible fix that has been working for me quite well. inline const char * find_first_file( const char * dir, BOOST_HANDLE & handle, BOOST_SYSTEM_DIRECTORY_TYPE & data ) { // std::cout << "find_first_file " << dir << std::endl; // \* is not supported on win98 //std::string dirpath( std::string(dir) + "\\*" ); std::string dirpath( dir ); dirpath += ( dirpath.empty() || dirpath[dirpath.size()-1] != '\\' ) ? "\\*" : "*"; return ( (handle = ::FindFirstFileA( dirpath.c_str(), &data )) == BOOST_INVALID_HANDLE_VALUE ) ? 0 : data.cFileName; } -- Best regards, Sebastien mailto:smartel@real.com

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Problem with boost::signal. How to call just one slot in signal
by Juho Mäkinen 07 Jun '05

07 Jun '05

Hello. I'm having problems with boost::signal. I have a simple callback system: typedef boost::signal<void (const String &)> StringCallbacks; TSharedPtr<StringCallbacks> stringCallbacks; stringCallbacks contains void (Const String &) -callback functions. New callback functions are registered into the callback system with registerCallback -function: template<class VarType> class SettingUpdater { private: VarType & reference; SettingUpdater(VarType & var) : reference(var) { } public: void operator()(const String & setting) { // do someting irrelevant for the question here // with the reference -variable } }; boost::signals::connection registerCallback(StringCallbacks::slot_type callback) { // PROBLEM: I'd like to call the callback once without calling every callback // which are possibly registered already into the signal before this. // Register the new callback into the signal. return stringCallbacks.get()->connect(callback); } The actual usage of registerCallback: int localVariable; registerCallback(SettingUpdater<int>(localVariable)); Question: As you might already see above, I'd like to call the callback function once in the registerCallback function without calling every callback already registered in the stringCallbacks signal. I first tried something like String param = "foo"; callback(param); but that won't compile. I also tried callback.get_slot_function()(param); That compiles, but it won't execute the operator() -function in SettingUpdater. Calling the signal will execute all callbacks registered, so the SettingUpdater function seems working. How I can execute the operator() function in SettingUpdater<> inside registerCallback function by the callback parameter passed to registerCallback function? Thanks in advance =) - Juho Mäkinen

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boost::trim Am I wrong?
by Sheng QuanHu 07 Jun '05

07 Jun '05

I just write a simple test of trim: #include <string> #include <boost/algorithm/string.hpp> int main(){ using namespace std; string temp = " just test "; boost::trim(temp); return 0; } but it couldn't pass the compile, error was: [C++ Error] trim.hpp(233): E2285 Could not find a match for 'detail::trim_end(undefined,undefined,detail::is_classifiedF)' [C++ Error] trim.hpp(126): E2285 Could not find a match for 'detail::trim_begin(undefined,undefined,detail::is_classifiedF)' but when I move the "using namespace std;" out of main function: #include <string> #include <boost/algorithm/string.hpp> using namespace std; int main(){ string temp = " just test "; boost::trim(temp); return 0; } I don't know why?

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minor error in example for numeric_cast
by Markus Werle 06 Jun '05

06 Jun '05

Hi! Just a minor documentation bug, but worth to be fixed: In the example on page http://www.boost.org/libs/numeric/conversion/doc/numeric_cast.html the line #include <boost/numeric_cast.hpp> should be replaced by #include <boost/cast.hpp> best regards, Markus

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Re: Re: [Boost-users] boost::trim Am I wrong?
by Sheng QuanHu 06 Jun '05

06 Jun '05

Hi, Pavol Droba: I am using borland c++builder 6. Best regards, Tiger ----- Your mail begin ----- Sender : Pavol Droba To : boost-users Time : 2005-06-06, 16:37:00 Subject: Re: [Boost-users] boost::trim Am I wrong? Hi, I'm not sure what the problem could be. But it seems like some bug in a compiler. So my first question is: What compiler do you use? Regards, Pavol ----- Your mail finished -----

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Whos Using Boost?
by John Maddock 06 Jun '05

06 Jun '05

There are now a set of prototype "Who's Using Boost?" pages available at: http://freespace.virgin.net/boost.regex/who/html/index.html Comments and suggests welcome, but in particular we need more case studies/products etc that are using Boost to be listed. If you have a product or project that could be listed then please see the submission guidelines at: http://freespace.virgin.net/boost.regex/who/html/who_s_using_boost_/submit.… Regards, John.

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FOREACH issues with GCC 3.2.3
by Dave Steffen 04 Jun '05

04 Jun '05

Hi Folks, It recently became known that our customer is using GCC 3.2.3; so I tried to compile our code (which makes heavy use of the FOREACH macro) with 3.2.3. I get a _ton_ of error messages like: warning: unused variable `bool _foreach_rvalue' Since we always compile with options that make warnings fatal, a large part of our project can't compiler with GCC 3.2.3. Has anyone else seen this? Does anyone have a solution? (e.g. is there a hack that will fool compilers into thinking _foreach_rvalue is used?) Thanks!! ---------------------------------------------------------------------- Dave Steffen, Ph.D. "There are two ways to write error-free Software Engineer IV programs; only the third one works." Numerica Corporation ph (970) 419-8343 x27 "Pie are not square. Pie are round. fax (970) 223-6797 Cornbread are square" dgsteffen(a)numerica.us ... anon (usenet) ___________________ Numerica Disclaimer: This message and any attachments are intended only for the individual or entity to which the message is addressed. It is proprietary and may contain privileged information. If you are neither the intended recipient nor the agent responsible for delivering the message to the intended recipient, you are hereby notified that any review, retransmission, dissemination, or taking of any action in reliance upon, the information in this communication is strictly prohibited, and may be unlawful. If you feel you have received this communication in error, please notify us immediately by returning this Email to the sender and deleting it from your computer.

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