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Forgot to add
by Foster, Gareth 01 Oct '04

01 Oct '04

I also was going to say Joel, you ought to moan about the description of spirit in the docs, I can see it is there in the list of libraries now, and whilst it probably does describe what the library does, it doesn't do it in a way that is very identifiable for those who don't know about the subject, I just plain missed it, despite the fact that I was looking to parse C++. spirit <file:///C:/boost/boost_1_31_0/libs/spirit/index.html> - LL parser framework represents parsers directly as EBNF grammars in inlined C++, from Joel de Guzman and team. Why not something like ... spirit <file:///C:/boost/boost_1_31_0/libs/spirit/index.html> - A customisable framework for parsing any syntax. You will know what I mean and how to describe it properly etc I'm sure. Just a thought :) Gaz

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Boost:regex and C++ Parsing - Clarification
by Foster, Gareth 30 Sep '04

30 Sep '04

Hello, Thank you Caleb and Hartmut for your replies. You both seem to think regex is a bad way to go, I will explain better what I want to write just to be clear. I want to write a tool (cli probably) where I can say, here you go, here is a large folder full of code, go and parse it. I will store the results in XML format somewhere, then, I can do say, "<myapp> class someclass" and the program will go and find where that class is declared/defined using its database, saving me headache. So I thought I could use one of the C++ expat wrappers, and boost regex looked powerful enough to do the parsing if only I were handy enough with regular expression syntax. Anyway, I don't know if that better explanation will make any difference to you recommendations, I look forward to reading you opinions. Oh, and the example I looked at is here Hartmut: http://boost.org/libs/regex/example/snippets/regex_search_example.cpp - that is what got me thinking I might actually be able to take on this challenge. Okay lads, thanks again, cheers Gaz -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Hartmut Kaiser Sent: 29 September 2004 18:41 To: boost-users(a)lists.boost.org Subject: RE: [Boost-users] Boost:regex and C++ Parsing Foster, Gareth wrote: > I have a couple of questions, firstly, how might I extend the > example for parsing C++ code for class names so that it > records the line number on which the class is defined? I > thought maybe I could extend the regular expression so that > it has "|(\n)" at the end, or maybe there is another way. In > any case I am not sure if that is the correct way to extend > the regex and I am unsure how to check the regex_match result > to see if it was a new line character I encountered or a class name. Which example you're referring to? > Secondly, are there any efforts anywhere to parse C++ for > other keywords by this approach? I don't know of any efforts going on regarding C++ parsing with the help of regex (non-authoritative answer). But there is the Wave library (Boost review is due shortly), which is a C/C++ preprocessor containing different C++ lexing components, which may be helpful for you during writing a class name extraction tool. Regards Hartmut _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

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RE: [Boost-users] C++ Parsing - oops
by Foster, Gareth 30 Sep '04

30 Sep '04

Hey mate, I've actually come across this, whilst it is really neat, it does require include paths, infact, probably a whole make system to resolve names etc, which I won't always have, so I decided against using it. If I'm wrong on that, please do let me know, since it would be ideal other than that one issue. Thanks! Gaz -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Volker Boerchers Sent: 30 September 2004 15:30 To: 'boost-users(a)lists.boost.org' Subject: Re: [Boost-users] C++ Parsing - oops Hi Gareth, > So, will spirit be the best way then? Glad to hear its already a part of > boost btw, congratulations mate. there might be another option. The gcc-xml project (http://www.gccxml.org) lets you use gcc for parsing. Volker -- Volker Börchers TECON Systems AG, http://www.tecon.de _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

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Boost uBLAS
by Pascal Bauer 30 Sep '04

30 Sep '04

Hi Boost People, Have just a simple Question: 1. I use the uBLAS matrix class together with the MPI. Is it save to send matrices similar to std::vectors, by using &(Matrix(0, 0)) as the argument for the sending buffer? (Similar as one can do &(Vector[0]) for the std::vector? ) I just use matrix<double> in the code, without any further template specifications. Thanx P.

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Boost.graph read_graphviz problems in CVS head
by Jeffrey Holle 29 Sep '04

29 Sep '04

I attempted to switch from boost_1_31_0 to the CVS head available on Sun Sep 26 20:25:26 PDT 2004. My application uses read_graphviz to read the attached file. When built with the CVS head boost and run, I get the message "parse error" and a segment fault. When build with boost 1_31_0 and run, it works fine. digraph Components { node [ shape = record ]; size="6,6"; 0[label="0",type="Component"]; 1[label="1",type="Component"]; 2[label="2",type="Component"]; 3[label="3",type="Component"]; 4[label="4",type="Component"]; 5[label="5",type="Component"]; 0 -> 1[type="Association"]; 1 -> 4[type="Association"]; 4 -> 0[type="Association"]; 2 -> 5[type="Association"]; }

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Boost:regex and C++ Parsing
by Foster, Gareth 29 Sep '04

29 Sep '04

Hello, I have a couple of questions, firstly, how might I extend the example for parsing C++ code for class names so that it records the line number on which the class is defined? I thought maybe I could extend the regular expression so that it has "|(\n)" at the end, or maybe there is another way. In any case I am not sure if that is the correct way to extend the regex and I am unsure how to check the regex_match result to see if it was a new line character I encountered or a class name. Secondly, are there any efforts anywhere to parse C++ for other keywords by this approach? Many thanks for any help or hints on this, for the record I am really impressed with boost, a while ago, I might have said I didn't want the depandancy, but now I'd put up with that any time, good luck getting boost work into the next C++ standard, it's great! Regards Gaz

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Thread: SUN forte7 64 bits compilation error
by Maxime Larose 29 Sep '04

29 Sep '04

We have used the boost thread library in 32 bits for more than a year. Congrats, it works like a charm. We recently moved our product to Solaris 9 64 bits and now we get compilation errors. (We use forte7.) CC -c -I/BINARIES/sol9/opt/boost_1_30_0 -I../../../ -Qoption CC -xcomdat -mt -fast -xarch=v9 -DBOOST_HAS_THREADS -o sunpro/libboost_thread/condition.o ../src/condition.cpp "../../..//boost/limits.hpp", line 35: Error: Multiple declaration for std::numeric_limits<long long>. "../../..//boost/limits.hpp", line 88: Error: Multiple declaration for std::numeric_limits<unsigned long long>. 2 Error(s) detected. make: *** [sunpro/libboost_thread/condition.o] Error 2 The problem seems to be in ./config/stdlib. I hacked roguewave.hpp to artificially increase the roguewave version number: #ifndef _RWSTD_VER # define BOOST_RWSTD_VER 0x010000 #elif _RWSTD_VER < 0x010000 # define BOOST_RWSTD_VER (_RWSTD_VER << 8) #else # ifdef __sparcv9 # define BOOST_RWSTD_VER 0x20200 # else # define BOOST_RWSTD_VER _RWSTD_VER # endif #endif Now, compilation works fine: CC -c -I/BINARIES/sol9/opt/boost_1_30_0 -I../../../ -Qoption CC -xcomdat -mt -fast -xarch=v9 -DBOOST_HAS_THREADS -o sunpro/libboost_thread/tss.o ../src/tss.cpp "../src/tss.cpp", line 192: Warning (Anachronism): Formal argument 2 of type extern "C" void(*)(void*) in call to pthread_key_create(unsigned*, extern "C" void(*)(void*)) is being passed void(*)(void*). 1 Warning(s) detected. (We've had the warning for the longest time.) I am no boost expert, but that seems to have taken care of the problem: the library works fine as far as I can tell. Are there side effects that I may not be aware of? Is forte7 64 bits generally supported right out of the box? Thanks, Max ------------------------------------------------ Maxime Larose Senior Software Designer Tel: ***-***-**** mlarose(a)broadsoft.com BroadSoft, Inc. http://www.broadsoft.com/

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RE: Converting a Boost implementation of Lambda to VC8 --- Found out about the Newer boost\lambda...
by John Henry 29 Sep '04

29 Sep '04

In Reference to this... I found out about the Upgrade of Lambda in Boost... I have downloaded and recompiled boost with the new Lambda and will try to sort this out myself first... It will be a bit tho as I now have to recompile the other Libraries dependent on boost First before I can go back to the original problem. On a side not: The boost "HEAD" version compiles much better for VC8 then my last one (1.30) jpmythic _____________________________________________________________________ [Edited Original] Subject: [Boost-users] Converting a Boost implementation of Lambda to VC8 so it compiles The basics: New to boost. Converting a project from VC7 to VC8 that uses Lambda functionality. Other issue, (I didn't write this code... so still learning it). The problem: ----------- The original compiles in earlier compilers, but comes up with "Ambiguous" error in VC8. The original code doesn't deal with Issues with MSVC compiliers, this I found in my searches. The fix from the Searches, points me to using the following workaround: (This was posted on both boost.org and ASPN) http://aspn.activestate.com/ASPN/Mail/Message/1387917 Now I get the basics, but I am still not quite sure about the whole boost structure, so heres the code I am dealing with. 4 files, so not too bad, and only in a small section. I've got the Basic's, I am just not sure how to conver this over: [code] template< class T > struct Holder { T value; }; typedef InheritMultiple < //MythicDebug --> list< int, std::string, Widget >, --> lambda< Holder< _ > >::type --> >::type myWidgetInfo; } // inheritance [/code] <<<<<<<<<<<<<<<<<<<<<<<<<<<<<SNIP>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

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Boost Variant and std::map recursion
by Caleb Epstein 29 Sep '04

29 Sep '04

I'm trying to use Boost.Variant to model a recursive data structure than can be either a scalar value, vector or map. My code works fine on GCC and VC7.1 but I just now installed Intel C++ 8.1 and am seeing this error: /opt/intel/include/c++/utility(48): error: incomplete type is not allowed _Ty2 second; // the second stored value ^ detected during instantiation of class "std::pair<_Ty1, _Ty2> [with _Ty1=const std::string, _Ty2=boost::recursive_variant_]" at line 111 of "bencode.hpp" compilation aborted for bdecode.cpp (code 2) I'm attaching the code, but the crux of the offense seems to be the recursive variant as the second part of the std::map template: /// The field_t is the basic building block; you can use it to /// represent a scalar value, list or dictionary typedef boost::make_recursive_variant< int_t, double, std::string, std::vector<boost::recursive_variant_>, std::map<std::string, boost::recursive_variant_> >::type field_t; Is icpc right to reject this? -- Caleb Epstein caleb.epstein(a)gmail.com

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Is boost::to_upper() still a part of Boost?
by Debajit Adhikary 29 Sep '04

29 Sep '04

Is boost::to_upper() still a part of Boost? I did a grep on the Boost includes today and did not find to_upper. Has it been renamed or deprecated? boost.org does list to_upper() in its online docs (boost.org Home > Documentation > Nightly CVS), but I can't find it in the online docs for the current release or the (offline) documentation that comes with Boost.

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Converting a Boost implementation of Lambda to VC8 so it compiles
by John Henry 29 Sep '04

29 Sep '04

The basics: New to boost. Converting a project from VC7 to VC8 that uses Lambda functionality. Other issue, (I didn't write this code... so still learning it). The problem: ----------- The original compiles in earlier compilers, but comes up with "Ambiguous" error in VC8. The original code doesn't deal with Issues with MSVC compiliers, this I found in my searches. The fix from the Searches, points me to using the following workaround: (This was posted on both boost.org and ASPN) http://aspn.activestate.com/ASPN/Mail/Message/1387917 Now I get the basics, but I am still not quite sure about the whole boost structure, so heres the code I am dealing with. 4 files, so not too bad, and only in a small section. I've got the Basic's, I am just not sure how to conver this over: [code] template< class T > struct Holder { T value; }; typedef InheritMultiple < //MythicDebug --> list< int, std::string, Widget >, --> lambda< Holder< _ > >::type --> >::type myWidgetInfo; } // inheritance [/code] The part --> list<... is where I am unsure of how to convert it over to the style in the above post: [code] ------ (snipped) ------ typedef ownership type; BOOST_MPL_AUX_LAMBDA_SUPPORT(1, ownership, (T)) [/code] The compile error comes in about the lambda< Holder<_> >::type [code] Test.cpp(47) : error C2872: 'lambda' : ambiguous symbol could be '\boost\boost\mpl\aux_\preprocessed\plain\full_lambda.hpp(27) : boost::mpl::lambda' or 'boost::mpl' [/code] Now I have tried changing it to: boost::mpl< Holder... boost::mpl::lambda< Holder.. All of those just give me other errors, even worse in number.. As far as I can tell I need to use the MSVC Compilier workaround to fix this... This is the last fix I need to start testing the code as I've managed to convert/fix the rest.. I am just not sure how to convert [ list< int... ] to [ BOOST_MPL_AUX_LAMBDA_SUPPORT(1, ownership, (T)) ] Thanks, John Henry

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Unrecoverable block scoping error
by Martin M 28 Sep '04

28 Sep '04

I use boost iterators and BGL in my project, which I normally compile with gcc. However, I wanted to try how portable it is, and tried to compile it with MSVC++ 6. After having sorted out a few minor quirks in my code, I get the error message "c:\program files\hack\microsoft visual studio\local\include\boost\type_traits\broken_compiler_spec.hpp(23) : fatal error C1506: unrecoverable block scoping error" Where could this stem from? I installed boost for VC++ from within Cygwin with the command line bjam "--prefix=c:\program files\hack\microsoft visual studio\local" "-sTOOLS=msvc" "--builddir=../boost_msvc_build" "-sMSVC_ROOT=c:\program files\hack\microsoft visual studio\vc98" install Any ideas? / martin

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[Linker error] undefined reference to `boost::gregorian::greg_month::as_short_string() const'
by Zhoujie Mao 28 Sep '04

28 Sep '04

Hi everyone, I just downloaded boost, built it on windows using cygwin. However, when I tried to run an example program. I got a the following link error [Linker error] undefined reference to `boost::gregorian::greg_month::as_short_string() const' I have added the corresponding lib and include directories to my make file. Is there anything I am missing? Any help will be greatly appreciated. George __________________________________ Do you Yahoo!? Y! Messenger - Communicate in real time. Download now. http://messenger.yahoo.com

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newbie: build support for HP-UX and aCC compiler
by arno.schaefer＠sqs.de 28 Sep '04

28 Sep '04

Hi all, I want to use the boost libraries an HP-UX 11.xx with Compiler aCC version "A.03.45". Because I found til now no hint, that the aCC compiler is directly supported by your tools list, I want to ask, if there are some experience with this compiler and the actual boost version and perhaps a reference to a description how to build the library with aCC. Thanks for your help Arno

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not working after upgrade
by Fred J. 27 Sep '04

27 Sep '04

Hello I am having a problem compiling a simple program with some boost lib. the problem happend after I apt-get update && apt-get upgrade my testing debian. my program #include "/usr/include/boost/filesystem/operations.hpp" #include "/usr/include/boost/filesystem/fstream.hpp" #include "/usr/include/boost/filesystem/path.hpp" ... on compileing I get g++ -g -Wall -c -o main.o main.cpp In file included from /usr/include/boost/filesystem/operations.hpp:18, from main.cpp:1: /usr/include/boost/filesystem/path.hpp:15:39: boost/filesystem/config.hpp: No such file or directory In file included from /usr/include/boost/filesystem/operations.hpp:18, from main.cpp:1: $locate config.hpp /usr/include/boost/config.hpp /usr/include/boost/config/select_compiler_config.hpp /usr/include/boost/config/select_platform_config.hpp /usr/include/boost/config/select_stdlib_config.hpp /usr/include/boost/lambda/detail/lambda_config.hpp /usr/include/boost/numeric/ublas/config.hpp /usr/include/boost/preprocessor/config/config.hpp /usr/include/boost/spirit/core/config.hpp /usr/include/boost/type_traits/config.hpp /usr/include/boost/variant/detail/config.hpp /var/boost/boost_1_31_0/boost/config.hpp /var/boost/boost_1_31_0/boost/config/select_compiler_config.hpp /var/boost/boost_1_31_0/boost/config/select_platform_config.hpp /var/boost/boost_1_31_0/boost/config/select_stdlib_config.hpp /var/boost/boost_1_31_0/boost/date_time/compiler_config.hpp /var/boost/boost_1_31_0/boost/date_time/locale_config.hpp /var/boost/boost_1_31_0/boost/date_time/posix_time/posix_time_config.hpp /var/boost/boost_1_31_0/boost/filesystem/config.hpp /var/boost/boost_1_31_0/boost/lambda/detail/lambda_config.hpp /var/boost/boost_1_31_0/boost/numeric/ublas/config.hpp /var/boost/boost_1_31_0/boost/preprocessor/config/config.hpp /var/boost/boost_1_31_0/boost/python/detail/config.hpp /var/boost/boost_1_31_0/boost/regex/config.hpp /var/boost/boost_1_31_0/boost/signals/detail/config.hpp /var/boost/boost_1_31_0/boost/spirit/core/config.hpp /var/boost/boost_1_31_0/boost/test/detail/unit_test_config.hpp /var/boost/boost_1_31_0/boost/thread/detail/config.hpp /var/boost/boost_1_31_0/boost/type_traits/config.hpp /var/boost/boost_1_31_0/boost/variant/detail/config.hpp thanks __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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Bad interaction between boost::bind and Boost.Python?
by Nat Goodspeed 24 Sep '04

24 Sep '04

With the files newly unpacked from boost_1_31_0.zip, using MS VS .NET 2003 (aka 7.1), the following two-line source file: #include <boost/bind.hpp> #include <boost/python.hpp> compiled with the following command line: cl /c /I "c:/Dev/boost_1_31_0" /I "$PYTHONDIR/include" /EHsc test.cpp produces these errors: Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 13.10.3077 for 80x86 Copyright (C) Microsoft Corporation 1984-2002. All rights reserved. test.cpp c:/Dev\boost_1_31_0\boost\mpl\less.hpp(39) : error C2760: syntax error : expected ',' not ';' c:/Dev\boost_1_31_0\boost\mpl\less.hpp(51) : see reference to class template instantiation 'boost::mpl::less<T1,T2>' being compiled c:/Dev\boost_1_31_0\boost\mpl\less.hpp(39) : error C2144: syntax error : 'const bool' should be preceded by '}' c:/Dev\boost_1_31_0\boost\mpl\less.hpp(39) : error C2062: type 'const bool' unexpected c:/Dev\boost_1_31_0\boost\mpl\less.hpp(39) : error C2238: unexpected token(s) preceding ';' c:/Dev\boost_1_31_0\boost\mpl\less.hpp(42) : error C2065: 'value' : undeclared identifier Reversing the order of 'bind.hpp' and 'python.hpp' results in a clean compile. I'm trying to upgrade from Boost 1.30.2 to 1.31.0 today, but this bug is turning into quite a problem because of deep nesting of our own #include files. It hasn't yet become a show-stopper; but it's certainly taking me a great deal of effort to try to propagate every #include <boost/python*> -- and every file that includes it! - higher in its includer's #include list than any #include <boost/bind.hpp>. Please tell me there's a better way.

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using graph_property_iter_range::const_iterator
by Jeffrey Holle 24 Sep '04

24 Sep '04

I'm using boost 1_31_0 and gcc 3.4.2. I'm adding an iterator interface to my class that abstracts use of internal boost graph properties and have had success with one exception that involves const_iterator. Here is how this class looks: struct VertexData { typedef boost::graph_property_iter_range <DataGraphT,vertex_Datum_t>::iterator iterator; typedef boost::graph_property_iter_range <DataGraphT,vertex_Datum_t>::const_iterator const_iterator; typedef Vertex_Datum value_type; VertexData(DataGraphT& dataGraph); iterator begin(void) {return boost::get_property_iter_range(dataGraph_,vertex_Datum).first;} // const_iterator begin(void) const {return boost::get_property_iter_range(dataGraph_,vertex_Datum).first;} iterator end(void) {return boost::get_property_iter_range(dataGraph_,vertex_Datum).second;} // const_iterator end(void) const {return boost::get_property_iter_range(dataGraph_,vertex_Datum).second;} When I uncomment the const begin method, I get the following compilation error: dataGraph.h:30: error: conversion from `boost::detail::lvalue_pmap_iter<boost::counting_iterator<size_t, boost::use_default, boost::use_default>, boost::subgraph_global_property_map<DataGraphT*, boost::vec_adj_list_vertex_property_map<boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, boost::property<boost::vertex_index_t, int, VertexProperty>, EdgeProperty, boost::no_property, boost::listS>, boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, boost::property<boost::vertex_index_t, int, VertexProperty>, EdgeProperty, boost::no_property, boost::listS>*, Vertex_Datum, Vertex_Datum&, vertex_Datum_t> > >' to non-scalar type `boost::detail::lvalue_pmap_iter<boost::counting_iterator<size_t, boost::use_default, boost::use_default>, boost::subgraph_global_property_map<const DataGraphT*, boost::vec_adj_list_vertex_property_map<boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, boost::property<boost::vertex_index_t, int, VertexProperty>, EdgeProperty, boost::no_property, boost::listS>, const boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS, boost::property<boost::vertex_index_t, int, VertexProperty>, EdgeProperty, boost::no_property, boost::listS>*, Vertex_Datum, const Vertex_Datum&, vertex_Datum_t> > >' requested Could somebody point out the problem here?

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Using Boost Tuple Library instead of variadic macros
by Barak Simon 24 Sep '04

24 Sep '04

Hi, I am trying to use the Tuple library in order to provide a logging interface which can get a variable number of parameters and handle them in a type-safe manner. However, though constructing a tuple by make_tuple seems easy enough (from a logging's user point of view) implementation wise, I am not sure how to actually iterate on the make_tuple_mapper which is being provided to my logging method, as generically getting the length and using invoking "get" on it does not work due to compile-time reasons (and there are no iterators available). I am sure it must be possible to do it somehow, or else the ostream serialisation capabilities would not have been possible to implement, but I guess I am just not sophisticated enough to fully grasp the MP intricacies... My logging method currently looks like that: template<class TheTuple> inline void logTuple(TheTuple theTuple) { } which might not be the correct way about it, but I was not sure how to explicitly provide a tuple type that's created by make_tuple, let alone how to iterate on the values. Any help with this would be greatly appreciated. Thanks, Barak _________________ Barak Simon GED IT Core Platform Deutsche Bank 190 George St. Sydney, 2000 Phone +61 2 925 85070 Fax +61 2 925 95050 -- This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.

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Does BGL support hypergraph?
by Peng Yu 24 Sep '04

24 Sep '04

Hi, I notices that there is some discussion about hypergraph in the mailing list archives 2 years ago. Is hypergraph implementation in BGL now? Best wishes, Peng

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RE: [Boost-users] Re: Bad interaction between boost::bindandBoost.Python?
by Nat Goodspeed 23 Sep '04

23 Sep '04

> -----Original Message----- > From: David Abrahams [mailto:dave@boost-consulting.com] > Sent: Thursday, September 23, 2004 8:24 AM > To: boost-users(a)lists.boost.org > Subject: [Boost-users] Re: Bad interaction between > boost::bindandBoost.Python? > > In principle your boost/python header has to be #included first [before boost/bind] > anyway, at least if you intend your code to run on POSIX. [Nat] ? I don't understand why that would be? Shouldn't each header #include everything to make it self-sufficient, rather than depending on the includer's prior #includes? > All I can > suggest is that you try the latest Boost CVS state, which doesn't have > this problem. A new release of Boost is imminent anyway. [Nat] That's fair, and thanks for testing it. But given the amount of time I've spent so far on this 1.31.0 upgrade, I'm going to lay low for a few days before announcing that I intend to upgrade to yet another version of Boost... ;-)

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Re: A boost.graph edge problem
by Lars Kunert 23 Sep '04

23 Sep '04

Have a look at your compare operator! It orders two pairs of values (A,B)(C,D) like this: (A<B) || (!(A<B) && (C<D)) this expession equals: (A<B) || (C<D) lets consider the test case: (1,2) (2,1) Your operator will return return true in whatever order this pair is compared... I think an operator like (A<B) || ((A==B) && (C<D)) will help > ... > typedef multiset<DataEdge,ltSubgraph> Edges; > ... > struct ltSubgraph : public > std::binary_function<DataEdge,DataEdge,bool> > { > bool operator() (const DataEdge& s1, const DataEdge& s2) const > { > return s1.m_source < s2.m_source || > (!(s1.m_source < s2.m_source) && s1.m_target < s2.m_target); > } > };

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A boost.graph edge problem
by Jeffrey Holle 23 Sep '04

23 Sep '04

I'm using boost 1.31.0 and gcc 3.4.2. While this problem is more of an application code problem, since I got no help on other lists, I trying this one with hopes of a response. I need to identify parallel edges from my graph, which is defined as: typedef subgraph<adjacency_list<vecS, vecS, bidirectionalS, property<vertex_index_t,int,VertexProperty>, EdgeProperty> > DataGraphT; typedef boost::graph_traits <DataGraphT>::edge_descriptor DataEdge; In the test case that I'm working on, I know I have parallel edges, actually 4 sets of 3. I'd like to use this code: DataGraph::handleParallelEdges(void) { typedef multiset<DataEdge,ltSubgraph> Edges; Edges edges; graph_traits<DataGraphT>::edge_iterator ei,ei_end; for (tie(ei,ei_end)=boost::edges(dataGraph_);ei!=ei_end;++ei) edges.insert(*ei); for (Edges::const_iterator iter = edges.begin(); iter != edges.end(); advance(iter,edges.count(*iter))) if (edges.count(*iter)>1) cout << "See duplicate" << endl; } However, when count never returns. The likely cause of this (I suspect) is the ltSubgraph functor. Its definition is: struct ltSubgraph : public std::binary_function<DataEdge,DataEdge,bool> { bool operator() (const DataEdge& s1, const DataEdge& s2) const { return s1.m_source < s2.m_source || (!(s1.m_source < s2.m_source) && s1.m_target < s2.m_target); } }; I say this because I can see that this functor is being continuously called in this infinite loop. Note that I use this functor in multiple other cases, but not with an associate container that allows duplicate keys. Is there a problem with this code?

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boost graph meant to contain classes and functions?
by Stephen torri 22 Sep '04

22 Sep '04

I see that the boost graph library is used to contain data but can it be used to contain a class which a visitor moves along the graph per a preset algorithm calling interfacing functions as it moves along? Here is an example. class Color_Base { virtual ~Color_Base(){} virtual std::string get_Name () = 0; }; class Red : Color_Base { virtual ~Red (){} virtual std::string get_Name () { return std::string("Red"); } }; class Yellow : Color_Base { virtual ~Yellow (){} virtual std::string get_Name () { return std::string("Yellow"); } }; class Blue : Color_Base { virtual ~Blue (){} virtual std::string get_Name () { return std::string("Blue"); } }; So we could have a graph like | Blue -- Red | / | / | / Yellow I have a visitor called Color_Visitor which has the following pseudo code: for each vertice in graph visit vertice call get_Name() print result Stephen -- Email: storri(a)torri.org

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No defines using bjam on Windows with msvc
by Phillip Seaver 22 Sep '04

22 Sep '04

As I said in an earlier post, I'm trying to start using jam for our projects. I'm using Boost.Jam ver 3.1.4. When I build on Windows with TOOLS=msvc and use "bjam -d2", the command-line doesn't have any define flags on it. Several of our source files rely on "WIN32", e.g. to determine the platform. Has anyone seen this before? I feel like I'm overlooking something obvious, but I haven't been able to figure it out. Here's the beginning of the output from "bjam -d2": ***** ...found 156 targets... ...updating 11 targets... vc-Cc ..\..\libs\ETSopt\bin\libetsopt.lib\msvc\debug\runtime-link-dynamic\etsopt .obj "cl" /Zm800 -nologo -c /Z7 /Od /Ob0 /GX /GR /MDd -I"..\..\libs\ETSopt" -I"C:\PROGRA~1\MICROS~2\VC98\include" -Fo"..\..\libs\ETSopt\bin\libetsopt.lib\ msvc\debug\runtime-link-dynamic\etsopt.obj" "etsopt.c" etsopt.c ***** Thanks in advance, Phillip

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Re: [Boost-users] [Linker error] undefined reference to`boost::gregorian::greg_month::as_short_string() const'
by aqsis＠mail.tele2.co.uk 21 Sep '04

21 Sep '04

I understand what you mean now. In that case you would need to pass the filter name into the DSO function as a parameter. So your DSO declaration would look like... SHADEOP_TABLE(shadeopname) = { { "float shadeopname_fs(float, string)", "", "" }, . . }; And the argv[] argument passed to the method would contain the filter name as it's second value, i.e. SHADEOP(shadeopname_fs) { float *result = (float *)argv[0]; float x = *(float *)argv[1]; STRING_DESC *filt = (STRING_DESC *)argv[1]; if(strcmp(filt->s, "box")==0) { /* Filter with a box filter */ . . . Hope this helps. Paul G Original Message: ----------------- From: Jeff Garland jeff(a)crystalclearsoftware.com Date: Tue, 21 Sep 2004 05:15:39 -0700 To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] [Linker error] undefined reference to`boost::gregorian::greg_month::as_short_string() const' On Mon, 20 Sep 2004 20:33:51 -0700 (PDT), Zhoujie Mao wrote I'm going to presume the built library file libboost_date_time-gcc-1_31.a is in D:/boost/lib. Please double check that. > Below is part of my make file > CPP = g++.exe > CC = gcc.exe > WINDRES = windres.exe > RES = > OBJ = main.o $(RES) > LINKOBJ = main.o $(RES) > LIBS = -L"D:/Dev-Cpp499/lib" -L"D:/boost/lib" > -L"D:/boost/lib/libboost_date_time-gcc-1_31.a" ^^^^^^^^^^^^ this looks wrong ^^^^^^^^^^^ change it to the following: -lboost_date_time-gcc-1_31 so your LIBS line looks like: LIBS = -L"D:/Dev-Cpp499/lib" -L"D:/boost/lib" -lboost_date_time-gcc-1_31 > I did include the libboost_date_time-gcc-1_31 but it > did not work. Well, not actually because the -L controls the search path and you can't point it directly to the library.... HTH, Jeff _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users -------------------------------------------------------------------- mail2web - Check your email from the web at http://mail2web.com/ .

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