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Question about from_time_t implementation
by Gerardo Lamastra 18 Jul '07

18 Jul '07

Hello everybody, I've seen that boost::posix_time supports a conversion function time_t from_time_t(ptime t) I've also seen on the mailing list, that something related to this issue has already been discussed. However, I've not found enough information (browsing ML and bug support) to understand if this issue is considered closed, or if anyone has never run into similar problems: We're using this function, and a counterpart ptime to_time_t(time_t) function because our application interacts with a MySQL db where date information is stored as unix timestamp. While processing the data, we run in a problem (I won't say 'bug') because MySQL and boost give different meaning to unix timestamp. For example, timestamp 1184795149 is 2007-Jul-18 23:45:49 (local time) for MySQL and it is 2007-Jul-18 21:45:49 (local time) for boost. The correct value is the first one. My current timezone offset is 2 hours, so you can see that we are missing UTC here. Checking the code, I've seen that the function basically converts by adding the number of second to 1/1/1970 0:0:0; however, it should be 1/1/1970 0:0:0 UTC, which is not. Jeff Garland touches this issue in this post: http://aspn.activestate.com/ASPN/Mail/Message/1758411 where he encourages C++ developer to move away from the time_t interface; however, often, for legacy reason, this may not be possible (as in our application). In order to comply with other implementation, we suggest to modify the function as follows: // The Boost Actual Implementation ptime boost_from_time_t(std::time_t t) { ptime start(boost::gregorian::date(1970,1,1)); return start + seconds(static_cast<long>(t)); } // Our 'old' function, written to match the previous one time_t boost_to_time_t(ptime t) { static const ptime THE_EPOCH(boost::gregorian::date(1970,1,1)); return time_period(THE_EPOCH, t).length().total_seconds(); } // The implementations that takes into account UTC ptime my_from_time_t(std::time_t t) { static const time_duration OFFSET = second_clock::local_time() - second_clock::universal_time(); static const ptime THE_EPOCH(boost::gregorian::date(1970,1,1), OFFSET); return THE_EPOCH + seconds(static_cast<long>(t)); } time_t my_to_time_t(ptime t) { static const time_duration OFFSET = second_clock::local_time() - second_clock::universal_time(); static const ptime THE_EPOCH(boost::gregorian::date(1970,1,1), OFFSET); return time_period(THE_EPOCH, t).length().total_seconds(); } That's all. Thanks a lot for any response. -Gerardo -------------------------------------------------------------------- CONFIDENTIALITY NOTICE This message and its attachments are addressed solely to the persons above and may contain confidential information. If you have received the message in error, be informed that any use of the content hereof is prohibited. Please return it immediately to the sender and delete the message. Should you have any questions, please contact us by replying to webmaster(a)telecomitalia.it. Thank you www.telecomitalia.it --------------------------------------------------------------------

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[multi_index][ann][rfc] Preview of Boost.MultiIndex 1.35 release
by Joaquín Mª López Muñoz 18 Jul '07

18 Jul '07

Hello, I've uploaded a preview version of Boost.MultiIndex as planned for shipping with Boost 1.35 --I don't think there'll be time to include more major features. Download at the Vault: http://www.boost-consulting.com/vault/index.php?&direction=0&order=&directo… (file multi_index.zip) You can try the preview with Boost 1.34.x; if you want to test the newly added interoperability with Boost.Interprocess, you'll have to use a snapshot of Boost CVS, where this library currently lies. The new important features: * New global_fun predefined key extractor. * Added iterator_to facility. * Included support for non-standard allocators such as those of Boost.Interprocess, which makes multi_index_containers placeable in shared memory. Don't miss example #12 at the examples section, which fully exercises this new capacity. * New versions of modify and modify_key with rollback, as described in the tutorial. * Indices provide the new cbegin, cend and, when applicable, crbegin and crend member functions, in accordance with the latest drafts of the next revision of the C++ standard. A longer list of changes can be consulted at the release notes page. I'd be extremely grateful if you can try this preview version and report any problems you find. As we're still in time to discuss the new features, do not hesitate to comment on these and bring forward your proposals for improvement. Thank you very much for your interest in Boost.MultiIndex, Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

1 0

Problem linking Boost Signals 1.34.0
by Craig Sanders 18 Jul '07

18 Jul '07

3 2

BGL: filtering (newbee)
by Line B. Reinhardt 18 Jul '07

18 Jul '07

Hi I have a question about graph filtering. My problem is that I would like to filter all edges from a graph g with weight less than 0.01 and all vertices which only has out edges with a weight less than 0.01 The filtering of the edges is show in the documentation. However I have problems with filtering the vertices. Can anyone help? Thanks Line

2 1

Is CountDown avaliable in Boost thread library.
by soi＠swordfish.com.au 18 Jul '07

18 Jul '07

Hi, This is my first time to use thread's boost library. I am looking for a CountDown or similar class which allows a caller to wait until all calling threads are completed. Are there similar feature in Boost's thread library. Many Thanks, Soi

2 1

Why intrusive_ptr destructor can throw exceptions?
by Pavel Syomin 18 Jul '07

18 Jul '07

Hello! I found another difference between shared_ptr and intrusive_ptr behavior: * shared_ptr destructor never throw exceptions; * intrusive_ptr destructor can throw exceptions. In my opinion, ~intrusive_ptr() should not throw exceptions too, because current behavior is much complicated and fraught with memory leak bugs.

2 1

[program_options]: Unicode option name and description
by Niko Vuokko 18 Jul '07

18 Jul '07

I understand how to make option values unicode, but don't know how to make something like generic->add_options() (L"ärrä,ä", L"ä option") ; work correctly. Looking at the headers it looks like this is impossible, because operator() is not a template<charT> class as many others. Another thing: How can I make the default argument not to show in the options_description printing and change the "arg" argument placeholder? Right now ("dir,d", po::value<string>()->default_value("."), "dirDesc") prints out cout << *opts; -> ... -d [--dir] arg(=.) dirDesc ... I would like to just write -d [--dir] path dirDesc The module tutorial tells (Multiple sources example) of the possibility to get --optimization n : optimization level -I [ --include-path ] path : include path where path is written instead of arg, n instead of arg, and the default value 10 is not printed, but compiling the code and testing it gives out --optimization arg (=10) optimization level -I [ --include-path ] arg include path What's wrong? I have boost-1.34.0. niko

1 0

problem porting code using spirit parser to v1.34.0
by Pearson, Andrew 18 Jul '07

18 Jul '07

Hi, I'm having trouble porting some code to use v1.34.0 of boost. We are using the spirit parser and have found that strings containing trailing white space are not parsed as before. The following code is a simple example of the problem. This code works with boost 1.33.1 but not 1.34.0. Can anyone help explain why the code no longer works and what we should do to fix the problem? Regards, Andy #include <string> #include <iostream> #include <boost/spirit/core.hpp> using namespace std; using namespace boost::spirit; bool parseStr(const string& str) { return parse(str.c_str(), real_p >> *(',' >> real_p), space_p).full; } int main(int argc, _TCHAR* argv[]) { string s1 = "1,2,3,4,5"; string s2 = "1,2,3,4,5 "; cout << "parsing: '" << s1 << "' : " << (parseStr(s1) ? "OK" : "ERROR") << endl; cout << "parsing: '" << s2 << "' : " << (parseStr(s2) ? "OK" : "ERROR") << endl; return 0; }

2 1

Problems with Cygwin/g++ and boost::spirit
by Patrick Gräbel 18 Jul '07

18 Jul '07

I am using Cygwin's g++ 3.4.4 and the official Cygwin Boost package version 1.33.1. This minimal programm using namespace boost::spirit; rule< > r; r = real_p; bool b = parse(inp.c_str(),r,space_p).full; produces the following error: g++ -c -o objs/src/Main.o -D__cygwin__ -O -Isrc -Ilibutil/include -Ilibrsrc/include src/Main.cpp /usr/include/boost/spirit/core/scanner/impl/skipper.ipp:173: instantiated from `boost::spirit::parse_info<const CharT*> boost::spirit::parse(const CharT*, const boost::spirit::parser<DerivedT>&, const boost::spirit::parser<SkipT>&) [with CharT = char, ParserT = boost::spirit::rule<boost::spirit::nil_t, boost::spirit::nil_t, boost::spirit::nil_t>, SkipT = boost::spirit::space_parser]' src/Main.cpp:16: instantiated from here /usr/include/boost/spirit/core/non_terminal/impl/rule.ipp:189: error: no matching function for call to `boost::spirit::impl::abstract_parser<boost::spirit::scanner<const char*, boost::spirit::scanner_policies<boost::spirit::iteration_policy, boost::spirit::match_policy, boost::spirit::action_policy> >, boost::spirit::nil_t>::do_parse_virtual(const boost::spirit::scanner<const char*, boost::spirit::scanner_policies_t>&)' Using the parser expression directly works without problems: bool b = parse(inp.c_str(),real_p,space_p).full; What am I doing wrong? Thanks, Patrick.

4 3

How to link Boost libraries statically, but with dynamic runtime?
by Niko Vuokko 18 Jul '07

18 Jul '07

I know there are some messages on this subject, but none of them gave me the answer or then I just didn't understand it. I'm trying to link some boost libraries statically to my program, but at the same time link the standard libraries dynamically. I have little experience ( == a total noob) in the linking process. I'm using ld version 2.16.1 and g++ version 4.1.2 on Linux. My /usr/lib has files like libboost_regex.so libboost_regex-s.a (the same for multi-threaded progs) Actually I'm unable even to link everything statically: ld <obj-files> -Bstatic -lboost_filesystem-s -lboost_program_options-s -lboost_regex-s -o prog fails. Also trying to link runtime dynamically with ld <obj-files> -Bstatic -lboost_filesystem-s -lboost_program_options-s -lboost_regex-s -Bdynamic -o prog fails. I also tried to ar/ranlib the so object files into .a archives (not sure if it can help in any case) and then link them as above, but it didn't work either (similar linking errors). Linking everything dynamically works, but I want to learn how to link libraries statically. Thanks, niko

4 7

Problem installing Boost MPI on Windows with MPICH 1.2.5
by Charles Karney 18 Jul '07

18 Jul '07

I'm testing out Boost MPI on Windows following the description in http://www.generic-programming.org/~dgregor/boost.mpi/doc/mpi/getting_start… I've installed MPICH 1.2.5 (the only one of the tested MPI implementations that works with Windows) in C:\Program Files\MPICH; have checked out boost from the CVS repository; and have bjam 3.1.13. bjam --with-mpi then complains about not finding MPI. For example, I tried adding to user-config.jam the following: using mpi : : "C:/Program Files/MPICH/SDK/Lib/mpich.lib" ; Running bjam --with-mpi --debug-configuration then gives: warning: toolset mpi initialization: can't find tool mpirun ... error: 'C:/Program Files/MPICH/SDK/Lib/mpich.lib' is not a valid for property specification Unfortunately I can't figure out how to interpret the following (from the documentation): If your MPI implementation does not have a wrapper compiler, or the MPI auto-detection code does not work with your MPI's wrapper compiler, you can pass MPI-related options explicitly via the second parameter to the mpi module: using mpi : : <find-shared-library>lammpio <find-shared-library>lammpi++ <find-shared-library>mpi <find-shared-library>lam <find-shared-library>dl ; What are the "MPI-related options"? If anyone has succeeded in getting Boost MPI working on Windows (with Visual Studio .NET) and with any MPI implementation, I'd appreciate hearing how they configured it. Thanks! -- Charles Karney <ckarney(a)sarnoff.com> Sarnoff Corporation, Princeton, NJ 08543-5300 URL: http://charles.karney.info Tel: +1 609 734 2312 Fax: +1 609 734 2662

3 4

[boost: program options] undefined reference.
by chun ping wang 17 Jul '07

17 Jul '07

Hi I've been trying to use boost program options and heres the linker error i get. Compling with gcc mingW 4.1 . C:/Boost/lib/libboost_program_options-mgw41-1_34.a(convert.o):convert.cpp:(.text+0x8f): undefined reference to `std::codecvt<wchar_t, char, int>::codecvt(unsigned int)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(convert.o):convert.cpp:(.text+0xb7): undefined reference to `std::codecvt<wchar_t, char, int>::~codecvt()' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(convert.o):convert.cpp:(.text+0x1b1): undefined reference to `std::codecvt<wchar_t, char, int>::id' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(convert.o):convert.cpp:(.text+0x2e5): undefined reference to `std::codecvt<wchar_t, char, int>::id' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(convert.o):convert.cpp:(.text$_ZN5boost6detail7convertIwcNS_3_bi6bind_tINSt12codecvt_base6resultENS_4_mfi4cmf7IS5_St23__codecvt_abstract_baseIwciERiPKcSC_RSC_PwSE_RSE_EENS2_5list8INS2_5valueIPKSt7codecvtIwciEEEPFNS_3argILi1EEEvEPFNSO_ILi2EEEvEPFNSO_ILi3EEEvEPFNSO_ILi4EEEvEPFNSO_ILi5EEEvEPFNSO_ILi6EEEvEPFNSO_ILi7EEEvEEEEEEESbIT_St11char_traitsIS1C_ESaIS1C_EERKSbIT0_S1D_IS1H_ESaIS1H_EET1_[std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > boost::detail::convert<wchar_t, char, boost::_bi::bind_t<std::codecvt_base::result, boost::_mfi::cmf7<std::codecvt_base::result, std::__codecvt_abstract_base<wchar_t, char, int>, int&, char const*, char const*, char const*&, wchar_t*, wchar_t*, wchar_t*&>, boost::_bi::list8<boost::_bi::value<std::codecvt<wchar_t, char, int> const*>, boost::arg<1> (*)(), boost::arg<2> (*)(), boost::arg<3> (*)(), boost::arg<4> (*)(), boost::arg<5> (*)(), boost::arg<6> (*)(), boost::arg<7> (*)()> > >(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, boost::_bi::bind_t<std::codecvt_base::result, boost::_mfi::cmf7<std::codecvt_base::result, std::__codecvt_abstract_base<wchar_t, char, int>, int&, char const*, char const*, char const*&, wchar_t*, wchar_t*, wchar_t*&>, boost::_bi::list8<boost::_bi::value<std::codecvt<wchar_t, char, int> const*>, boost::arg<1> (*)(), boost::arg<2> (*)(), boost::arg<3> (*)(), boost::arg<4> (*)(), boost::arg<5> (*)(), boost::arg<6> (*)(), boost::arg<7> (*)()> >)]+0x82): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_S_construct(unsigned int, wchar_t, std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(convert.o):convert.cpp:(.text$_ZN5boost6detail7convertIwcNS_3_bi6bind_tINSt12codecvt_base6resultENS_4_mfi4cmf7IS5_St23__codecvt_abstract_baseIwciERiPKcSC_RSC_PwSE_RSE_EENS2_5list8INS2_5valueIPKSt7codecvtIwciEEEPFNS_3argILi1EEEvEPFNSO_ILi2EEEvEPFNSO_ILi3EEEvEPFNSO_ILi4EEEvEPFNSO_ILi5EEEvEPFNSO_ILi6EEEvEPFNSO_ILi7EEEvEEEEEEESbIT_St11char_traitsIS1C_ESaIS1C_EERKSbIT0_S1D_IS1H_ESaIS1H_EET1_[std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > boost::detail::convert<wchar_t, char, boost::_bi::bind_t<std::codecvt_base::result, boost::_mfi::cmf7<std::codecvt_base::result, std::__codecvt_abstract_base<wchar_t, char, int>, int&, char const*, char const*, char const*&, wchar_t*, wchar_t*, wchar_t*&>, boost::_bi::list8<boost::_bi::value<std::codecvt<wchar_t, char, int> const*>, boost::arg<1> (*)(), boost::arg<2> (*)(), boost::arg<3> (*)(), boost::arg<4> (*)(), boost::arg<5> (*)(), boost::arg<6> (*)(), boost::arg<7> (*)()> > >(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, boost::_bi::bind_t<std::codecvt_base::result, boost::_mfi::cmf7<std::codecvt_base::result, std::__codecvt_abstract_base<wchar_t, char, int>, int&, char const*, char const*, char const*&, wchar_t*, wchar_t*, wchar_t*&>, boost::_bi::list8<boost::_bi::value<std::codecvt<wchar_t, char, int> const*>, boost::arg<1> (*)(), boost::arg<2> (*)(), boost::arg<3> (*)(), boost::arg<4> (*)(), boost::arg<5> (*)(), boost::arg<6> (*)(), boost::arg<7> (*)()> >)]+0x152): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::replace(unsigned int, unsigned int, wchar_t const*, unsigned int)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(convert.o):convert.cpp:(.text$_ZN5boost6detail7convertIwcNS_3_bi6bind_tINSt12codecvt_base6resultENS_4_mfi4cmf7IS5_St23__codecvt_abstract_baseIwciERiPKcSC_RSC_PwSE_RSE_EENS2_5list8INS2_5valueIPKSt7codecvtIwciEEEPFNS_3argILi1EEEvEPFNSO_ILi2EEEvEPFNSO_ILi3EEEvEPFNSO_ILi4EEEvEPFNSO_ILi5EEEvEPFNSO_ILi6EEEvEPFNSO_ILi7EEEvEEEEEEESbIT_St11char_traitsIS1C_ESaIS1C_EERKSbIT0_S1D_IS1H_ESaIS1H_EET1_[std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > boost::detail::convert<wchar_t, char, boost::_bi::bind_t<std::codecvt_base::result, boost::_mfi::cmf7<std::codecvt_base::result, std::__codecvt_abstract_base<wchar_t, char, int>, int&, char const*, char const*, char const*&, wchar_t*, wchar_t*, wchar_t*&>, boost::_bi::list8<boost::_bi::value<std::codecvt<wchar_t, char, int> const*>, boost::arg<1> (*)(), boost::arg<2> (*)(), boost::arg<3> (*)(), boost::arg<4> (*)(), boost::arg<5> (*)(), boost::arg<6> (*)(), boost::arg<7> (*)()> > >(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, boost::_bi::bind_t<std::codecvt_base::result, boost::_mfi::cmf7<std::codecvt_base::result, std::__codecvt_abstract_base<wchar_t, char, int>, int&, char const*, char const*, char const*&, wchar_t*, wchar_t*, wchar_t*&>, boost::_bi::list8<boost::_bi::value<std::codecvt<wchar_t, char, int> const*>, boost::arg<1> (*)(), boost::arg<2> (*)(), boost::arg<3> (*)(), boost::arg<4> (*)(), boost::arg<5> (*)(), boost::arg<6> (*)(), boost::arg<7> (*)()> >)]+0x424): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x19f): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x28b): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::basic_string(std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2d2): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x367): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x40b): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::basic_string(std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x44c): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x526): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x57e): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x5ed): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x10bb): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x128f): more undefined references to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' follow C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x215f): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::basic_string(std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x21c5): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::basic_string(std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2299): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::basic_string(std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&, unsigned int, unsigned int)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x22cb): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::basic_string(std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x234a): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2367): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_M_leak_hard()' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x23b3): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_M_leak_hard()' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x23cf): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x23eb): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_M_leak_hard()' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2406): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_M_leak_hard()' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x24da): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2519): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2a4a): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::basic_string(std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2a8f): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_M_leak_hard()' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2b07): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_M_leak_hard()' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2b2b): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::compare(wchar_t const*) const' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2be6): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::compare(wchar_t const*) const' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2c02): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::compare(wchar_t const*) const' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2c1e): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::compare(wchar_t const*) const' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2c41): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::compare(wchar_t const*) const' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2c60): more undefined references to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::compare(wchar_t const*) const' follow C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2ccf): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2db2): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::compare(wchar_t const*) const' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2dce): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::compare(wchar_t const*) const' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text+0x2f50): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNK5boost3any6holderISbIwSt11char_traitsIwESaIwEEE5cloneEv[boost::any::holder<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > >::clone() const]+0x67): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::basic_string(std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZN5boost3any6holderISbIwSt11char_traitsIwESaIwEEED0Ev[boost::any::holder<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > >::~holder()]+0x93): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZN5boost3any6holderISbIwSt11char_traitsIwESaIwEEED1Ev[boost::any::holder<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > >::~holder()]+0x8b): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > >::_M_insert_aux(__gnu_cxx::__normal_iterator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >*, std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > > >, std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)]+0x65): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::basic_string(std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > >::_M_insert_aux(__gnu_cxx::__normal_iterator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >*, std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > > >, std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)]+0x85): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::basic_string(std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > >::_M_insert_aux(__gnu_cxx::__normal_iterator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >*, std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > > >, std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)]+0xc2): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::assign(std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > >::_M_insert_aux(__gnu_cxx::__normal_iterator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >*, std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > > >, std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)]+0xec): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::assign(std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > >::_M_insert_aux(__gnu_cxx::__normal_iterator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >*, std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > > >, std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)]+0x1d4): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::basic_string(std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > >::_M_insert_aux(__gnu_cxx::__normal_iterator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >*, std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > > >, std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)]+0x21a): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::basic_string(std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > >::_M_insert_aux(__gnu_cxx::__normal_iterator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >*, std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > > >, std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)]+0x27d): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::basic_string(std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > >::_M_insert_aux(__gnu_cxx::__normal_iterator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >*, std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > > >, std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)]+0x302): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > >::_M_insert_aux(__gnu_cxx::__normal_iterator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >*, std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > > >, std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)]+0x35a): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > >::_M_insert_aux(__gnu_cxx::__normal_iterator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >*, std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > > >, std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)]+0x48a): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > >::_M_insert_aux(__gnu_cxx::__normal_iterator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >*, std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > > >, std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)]+0x4fc): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > >::_M_insert_aux(__gnu_cxx::__normal_iterator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >*, std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > > >, std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)]+0x589): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZNSt6vectorISbIwSt11char_traitsIwESaIwEESaIS3_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS3_S5_EERKS3_[std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > >::_M_insert_aux(__gnu_cxx::__normal_iterator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >*, std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > > >, std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)]+0x627): more undefined references to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_Rep::_M_destroy(std::allocator<wchar_t> const&)' follow C:/Boost/lib/libboost_program_options-mgw41-1_34.a(value_semantic.o):value_semantic.cpp:(.text$_ZN5boost15program_options10validators17get_single_stringIwEERKSbIT_St11char_traitsIS3_ESaIS3_EERKSt6vectorIS7_SaIS7_EEb[std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const& boost::program_options::validators::get_single_string<wchar_t>(std::vector<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >, std::allocator<std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > > > const&, bool)]+0x19d): undefined reference to `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_S_construct(unsigned int, wchar_t, std::allocator<wchar_t> const&)' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(utf8_codecvt_facet.o):utf8_codecvt_facet.cpp:(.text$_ZN5boost15program_options6detail18utf8_codecvt_facetD0Ev[boost::program_options::detail::utf8_codecvt_facet::~utf8_codecvt_facet()]+0x12): undefined reference to `std::codecvt<wchar_t, char, int>::~codecvt()' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(utf8_codecvt_facet.o):utf8_codecvt_facet.cpp:(.text$_ZN5boost15program_options6detail18utf8_codecvt_facetD1Ev[boost::program_options::detail::utf8_codecvt_facet::~utf8_codecvt_facet()]+0xe): undefined reference to `std::codecvt<wchar_t, char, int>::~codecvt()' C:/Boost/lib/libboost_program_options-mgw41-1_34.a(utf8_codecvt_facet.o):utf8_codecvt_facet.cpp:(.rdata$_ZTVN5boost15program_options6detail18utf8_codecvt_facetE[vtable for boost::program_options::detail::utf8_codecvt_facet]+0x24): undefined reference to `std::codecvt<wchar_t, char, int>::do_length(int&, char const*, char const*, unsigned int) const' collect2: ld returned 1 exit status make: *** [NeuralNetProject.exe] Error 1

2 2

[wave] Revisited: build errors (partially applies to RC3)
by Ovanes Markarian 17 Jul '07

17 Jul '07

Hello Hartmut! I looked through the wave Jamfile.v2 and was able (???) to fix compilation and linking errors of a newer wave release. First error was that I could not build wave only lib. This was caused by the line nr. 34 (RC3) there is written: /boost/filesystem//boost_filesystem The correct filesystem reference at least on my Windows XP VC80 Express Edition machine is: /boost//filesystem The next issue relates to the changes you did where linking errors happen. To fix this issue I added a dependency (don't know if this was a correct way to do...) to the thread library: /boost//thread At the line 35. This dependency is only needed if wave head is compiled. I still have a problem that during the initialization phase of wave/spirit's static variables my app crashes. May be you can currently switch off the multi-threaded support in the head revision (or make it available via a macro???), so that I can take files with the conditional processing feature only. Otherwise I am currently blocked because I can either select MT with conditional processing (=>app crashes) or ST without conditional processing. Would be great to get ST with conditional processing. The app crashes during the parsing of file: boost\wave\util\cpp_macromap_predef.hpp line 166. // __SPIRIT_PP_VERSION__/__WAVE_VERSION__ boost::wave::util::time_conversion_helper const compilation_time(__DATE__ " " __TIME__); May be there is an assertion, but Visual Studio unfortunately does not show this. With Kind Regards, Ovanes Markarian

2 2

[Interprocess/Process] Libraries status?
by Peter Novak 17 Jul '07

17 Jul '07

Dear Boost users/developers, first let me introduce myself to the list as I am newcomer here. My name is Peter Novak and I am using Boost since few months in some of my research projects. I need to implement some extensive interprocess communication and as I am already using Boost quite extensively, I looked a bit around and found that there are Boost.Interprocess and Boost.Process libraries hanging somewhere in the air. As I found, Interprocess by Ion Gaztanaga was already accepted for Boost release last in February 2006. Since then, we already saw 1.34 release, which did not include this library(why?), although it is already included in the CVS tree. Finally, there does not seem to be any special review notice, or any other remark about the fate of the Process library by Julio Vidal, although it was written in the frame of the SoC project last year and did not seem to receive negative comments on the developer's list. Is there somebody who could update me on the fate of these libraries? I mean whether they will be included (Interprocess) in the next Boost release, and if so, when is the next version of Boost scheduled to be released? Are there any considerations to submit Process library for review, or was it dismissed without a proper review process? As of now, I am considering to incorporate the Interprocess library into my source tree anyway and one day when the next Boost version will be released, I will migrate my package to the version included with the Boost 1.35(?). Thanks for your comments and help. Best, Peter. -- Peter Novak, pno-boost(a)aronde.net, http://peter.aronde.net/

2 1

[test] cannot wipe out linker errors
by Christian Henning 17 Jul '07

17 Jul '07

Hi there, I'm using boost 1.34 on MSVC 7.1. For whatever reason I cannot eliminate various linker errors. I have defined my BOOST_AUTO_TEST_CASEs in several .cpp files and this seems to create multiple definition of various symbols. The errors look as the following: string_table_test.obj : error LNK2005: "bool boost::test_tools::`anonymous namespace'::dummy_cond" (?dummy_cond@?A0x7aa5c0d5@test_tools@boost@@3_NA) already defined in ORM_test.obj string_table_test.obj : error LNK2005: "class unit_test_log_t::boost::unit_test_log_t & boost::unit_test::`anonymous namespace'::unit_test_log" (?unit_test_log@?A0x7aa5c0d5@unit_test@boost@@3AAVunit_test_log_t@23@A) already defined in ORM_test.obj Did anyone had to deal which such messages before? Thanks ahead, Christian

2 6

Pointer containers and raw arrays of pointers
by Chris Newbold 17 Jul '07

17 Jul '07

Greetings. I've been wrestling with some legacy C code which makes heavy use of raw arrays of pointers-- typically pointers to quasi-OO C structures which have specific "constructor" and "destructor" functions. Here's a contrived example: struct OldStuff { ... }; OldStuff* CreateOldStuff(); void DestroyOldStuff(OldStuff*); Then there are functions which return zero or more of these structures as output via an array of pointers: bool FiddleWithStuff(OldStuff** output, size_t count, ...); It's the callers responsibility to properly dispose of the results returned in 'output' by calling DestroyOldStuff() on each element. What I'd like to be able to do is provide a wrapper for functions like this which provide automatic management for the output values. Here's an example using ptr_vector: struct OldStuff_Destroyer { // What's up with the const pointer to deallocate?!? static void deallocate_clone(const OldStuff* p) { DestroyOldStuff(const_cast<OldStuff*>(p)); } }; typedef boost::ptr_vector< boost::nullable<OldStuff>, OldStuff_Destroyer> StuffVec_t; bool Wrapper(StuffVec_t& output, size_t count, ...); The pointer containers like ptr_vector seem to be a good fit, particularly given the customizable cloning behavior and is a very natural transition from an array of pointers. The problem I'm having is how to couple ptr_vector to the legacy code which expects to use arrays of pointers. Here's what I'd like to do: bool Wrapper(StuffVec_t& output, size_t count, ...) { // Won't work: resize() isn't supported output.resize(count); // Won't work: no way to get to raw storage return FiddleWithStuff(&output[0], count, ...); } As noted, this won't work for a couple of reasons. The pointer containers have an aversion to containing NULL pointers, which is why I imagine resize() isn't supported. And there's no way to get a pointer to the raw storage for the pointers to provide a buffer for the legacy code to write into. I do understand why the pointer containers don't support what I'm trying to do here, and the restrictions are entirely reasonable to provide additional safety. But... Using a container of smart pointers isn't an option, either, for the same reason: the need to have legacy code write into the storage as if it were an array. Does anyone have any suggestions on how to encapsulate a collection of pointers and some associated deletion logic? Obviously I could write my own pointer collection that satisfies my requirements, but I was hoping to use off-the-shelf bits. Thanks for any ideas. -Chris

3 3

Re: [Boost-users] Reply formatting plea
by Ovanes Markarian 17 Jul '07

17 Jul '07

On Mon, July 16, 2007 13:46, David Abrahams wrote: [...] > It gets really hard (for me, at least) to distinguish what you wrote from what the other person wrote. I know this seems nitpicky, but I ask that anyone who can tolerate it leave a blank line around replies, as follows: > > > quote somebody saying something > > about something they said > > Your reply to the original poster's > thesis, or even: Would you tolerate this style? I like when things which belong together are together... > > quote somebody saying > > something about something they > > said I hope this kind of formatting is clear as well. If not I will do my best and write as proposed by Dave. > Thanks, > > -- > Dave Abrahams > Boost Consulting > http://www.boost-consulting.com > > The Astoria Seminar ==> http://www.astoriaseminar.com > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users > It is not my intention to start a long discussion, "yes" or "no" whould be great ;) With Kind Regards, Ovanes Markarian With Kind Regards, Ovanes Markarian

4 4

boost libraries and gcc-2.95 on linux
by Dmitry Teslenko 17 Jul '07

17 Jul '07

Hello! Are compiler requirements equal across all boost libraries? I've tried to statically link against boost_regex, boost_signals and boost_filesystem and last one fails to compile saying: /opt/boost_1_34_0/boost/filesystem/path.hpp:615: syntax error before `&' /opt/boost_1_34_0/boost/filesystem/path.hpp:617: `::basic_ostream' undeclared (first use here) /opt/boost_1_34_0/boost/filesystem/path.hpp:617: `Path' is not a class or namespace /opt/boost_1_34_0/boost/filesystem/path.hpp:617: `string_type' is not a class or namespace /opt/boost_1_34_0/boost/filesystem/path.hpp:617: `value_type' is not a class or namespace /opt/boost_1_34_0/boost/filesystem/path.hpp:617: using `typename' outside of template /opt/boost_1_34_0/boost/filesystem/path.hpp:617: parse error before `,' /opt/boost_1_34_0/boost/filesystem/path.hpp:619: ANSI C++ forbids declaration `operator <<' with no type etc ... While signals and regex compile cleanly. My Jamroot looks like: BOOST_PATH = <path-to-boost> ; project : requirements <include>$(BOOST_PATH) <threading>multi lib boost-signals : [ glob $(BOOST_PATH)/libs/signals/src/*.cpp ] : <link>static ; ... exe boost-test : main.cpp boost-signals ... ; Does 2.95 gcc compiler supported? Thanks.

2 3

[BGL] filtered_graph and bundled_properties
by Robin Ziehe 17 Jul '07

17 Jul '07

Trying to create a property map (passing 'get' a member pointer as property) from a bundled property of a filtered graph i get the following error: 'vertex_bundled' : is not a member of 'boost::filtered_graph<Graph,EdgePredicate>' Is this a known problem? I am using boost cvs with Visual Studio 2005.

1 0

Date-time - How to handle mixed instances of floating, UTC and local times
by Mike Higginbottom 17 Jul '07

17 Jul '07

I have an application that needs to deal with floating time, UTC and local time. I can use ptime to represent floating and UTC but there's then no way to tell, for a given ptime instance, whether it represents a floating time or UTC. I could use local_time with a null tz to represent UTC or floating (seems like a hack and still only allows me one or the other representation) and a non-null tz for local times. Given only two 'time' classes (ptime and local_time) what's the best way to represent three different time concepts? Should I inherit from local_time to give me my three representations? -- Mike Higginbottom Paul Smith Computer Services Silk Mill House 196 Huddersfield Road Meltham Holmfirth HD9 4AW United Kingdom http://www.pscs.co.uk +44 (0)1484 855800

1 0

[interprocess] construct<> and find_or_construct<>
by "JOAQUIN LOPEZ MU?Z" 17 Jul '07

17 Jul '07

Are construct<> and find_or_construct<> self-synchronized? For instance, can several process do the following seg.find_construct<type>("name"); (same seg, type and name) without guarding the operation with a mutex? Thank you, Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

3 2

Re: [Boost-users] [regex] How to compile with desired versionwhenmultiple versions of boost library are installed
by Chandan Nilange 17 Jul '07

17 Jul '07

Also as suggested by David, I had to change LD_LIBRARY_PATH=/home/ChandanNilange/work/boost/lib:$LD_LIBRARY_PATH Thanks David! Rgds, Chandan --- Chandan Nilange <chandan_nilange(a)yahoo.com> wrote: > Hello John & Steven, > > Thanks for ur help. > I was able to resolve the issue. > > As per the link > http://gcc.gnu.org/onlinedocs/cpp/Search-Path.html > > "All the directories named by -I are searched, in > left-to-right order, before the default directories. > The only exception is when dir is already searched > by > default. In this case, the option is ignored and the > search order for system directories remains > unchanged." > > Since we have "boost" directory at default > path:/usr/include/boost, it used to look > /usr/include/boost before > -I<install_path>/boost_1_34_0/boost > > Workaround Done: used -I<install_path>/boost_1_34_0 > Now "boost_1_34_0" is not in default path hence > looked > first > > Though this workaround works, let me know if this is > the right way to go. > > Thanks & Regards, > Chandan > > > > > > ____________________________________________________________________________________ > Boardwalk for $500? In 2007? Ha! Play Monopoly Here > and Now (it's updated for today's economy) at Yahoo! > Games. > http://get.games.yahoo.com/proddesc?gamekey=monopolyherenow > > ____________________________________________________________________________________ Boardwalk for $500? In 2007? Ha! Play Monopoly Here and Now (it's updated for today's economy) at Yahoo! Games. http://get.games.yahoo.com/proddesc?gamekey=monopolyherenow

1 0

Re: [Boost-users] [regex] How to compile with desired version when multiple versions of boost library are installed
by Chandan Nilange 17 Jul '07

17 Jul '07

Hello, I have boost_1_32 version installed at /usr/include/boost Also, I have installed boost_1_34 at another path:/home/myname/work/boost/boost_1_34_0/ Now when I try to run with 1_34 version, it still points to 1_32 version at /usr/include (this is observed when I debug using gdb it refers to /usr/include/boost/regex/v4/match_results.hpp:118) I tried following things: 1] export LD_LIBRARY_PATH=/home/myname/work/boost/boost_1_34_0/boost:$LD_LIBRARY_PATH export PATH=/home/myname/work/boost/boost_1_34_0/boost:$PATH 2] I am using following command for compilation g++ -c -g -I/home/myname/work/boost/boost_1_34_0/boost ${TEST_FILES_PATH}/${TEST}.c g++ ${TEST}.o -L/home/myname/work/boost/lib -lboost_regex 3] I am including boost header in ${TEST}.c as below #include "boost/regex.hpp" Any help is most welcome. Thanks and Regards, Chandan ____________________________________________________________________________________ Pinpoint customers who are looking for what you sell. http://searchmarketing.yahoo.com/

5 7

tools/regression *.cpp files and test procedure
by Robert Ramey 17 Jul '07

17 Jul '07

http://www.boost.org/tools/regression/index.htm as well as the 1.34 release candidate refer to process_jam_log.cpp and compiler_status.cpp. Also there is a shell script run_tests.sh for invoking these programs. Is this information correct? Does this procedure, programs and scripts function with bjam V2 and whatever else has changed with 1.34 ? Robert Ramey

1 1

[BGL] filtered_graph and push_relabel_max_flow
by Leandro T. C. Melo 17 Jul '07

17 Jul '07

Hi all. I noticed the following comment on file push_relabel_max_flow.hpp: // This is a breadth-first search over the residual graph // (well, actually the reverse of the residual graph). // Would be cool to have a graph view adaptor for hiding certain // edges, like the saturated (non-residual) edges in this case. This comment is on top of function global_distance_update(), which actually implements the bfs mentioned above. Is there a particular reason for not filtering the graph (with filtered_graph) and avoiding the saturated edges? (Instead of reimplementing bfs.) Also, addition to the active and inactive lists could be done with a visitor. Thanks, Leandro.

1 0

compiler -Wshadow warnings
by Bryan Green 17 Jul '07

17 Jul '07

Hello, I'm reporting some warnings I'm getting from gcc when I compile with my code with -Wshadow (Boost 1.34). Not critical, just annoying (makes it harder to catch warnings in my own code). /usr/include/boost/signal.hpp:345: warning: declaration of 'combiner' shadows a member of 'this' /usr/include/boost/signals/signal_template.hpp:348: warning: declaration of 'result_type' shadows a member of 'this' /usr/include/boost/signals/detail/slot_call_iterator.hpp:51: warning: declaration of 'f' shadows a member of 'this' /usr/include/boost/program_options/parsers.hpp:34: warning: declaration of 'description' shadows a member of 'this' /usr/include/boost/variant/variant.hpp:1115: warning: declaration of 'which' shadows a member of 'this' /usr/include/boost/variant/variant.hpp:1120: warning: declaration of 'which' shadows a member of 'this' The variant ones are especially problematic, as the printout of the instantiation heirarchy is several pages long.

1 0

program_options: Are my options too complicated?
by Steven Mackenzie 16 Jul '07

16 Jul '07

Hello, I am writing an application that moves some data through a sequence of possibly optional processing steps, for instance (simplified) 1/ Read and Export Data, optionally exporting it to a text or binary file. 2/ Optionally Normalise the data, optionally exporting to file. 3/ Optionally reduce the size of the data set, optionally exporting the result. 4/ Create a score for the data set, and write the score to a file or socket. Each processing step 1-4 has a set of options, for example step 1 might export the data as a text file or as a binary, and might transpose the data (rows and columns) to make it easier to plot in a spreadsheet. Data output at each processing step 1-3 is optional, and processing steps 1-2 are optional. As described, this sounds like a pipeline of processes, but the customers expectations (and my ability) suggest that this should be a single application*, but with a consequently complicated set of options. I'd like to be able to use program_options to help me parse the command line or config file, and so my plan for the command line is that it would support 4 options (one for each step), for instance with <required options> and [optional options]: app <--export [optional file name [binary|text [transpose]]> [--normalize [optional file name]] [--reduce [optional file name]] <--score <file name or server address> [optional treshold number]> <input file name> I want to allow each option to be given more than once, so that for instance data could be exported as text and binary with app --export file1.bin binary --export file2.txt text transposed ... In another case the command line might be simply app --export --normalize --score file://score.txt input.bin where --export and --normalize are given as boolean switches, and --score has used a default value for the threshold number. In another case, I would like all of the options in a configuration file, and only the input file name would be given on the command line. So my questions: 1/ Could I make my command line simpler? 2/ Will boost::program_options be helpful in this case - I've only used it once before in a much simpler scenario? 3/ What program_options methods should I be looking at? Although the documentation has an excellent set of examples, I'm finding the reference section something of a maze. All sugestions will be gratefully received! Steven * The data set is large, and some processing steps might transform the data in-place. Other steps might depend on the output of more than one steps (for instance step 4 might depend on the results of steps 2 and 3). I hope to make much of the process multi-threaded.

1 0

[1.34.1] Release Candidate 3
by witt＠mailsnare.net 16 Jul '07

16 Jul '07

Hi, The 1.34.1 release candidate 3 is now available from http://www.boost.org/release/ please give it a try and report any problems to the developer list or directly to me. Thomas

1 0

Did not succeed to use algorithm/string on WinCE with MSVC 2005 and PocketPC2003 SDK
by Françoise CONIL 16 Jul '07

16 Jul '07

Hi, I successfully use replace_all function in a win32 "helloboost" application. My code has to work on Windows CE and when I tried a "helloboostpda" application, I had an error on boost/algorithm/string/compare.hpp because of the following include : #include <locale> This seems to be due to PocketPC2003 SDK that does not have a "locale" include (only a locale.h). Is there something I can do to use Boost algorithm/string library on Windows CE ? Thanks Francoise

1 0

Re: [Boost-users] [Boost.Filesystem] Program can't run under Win 98
by Trigve Siver 16 Jul '07

16 Jul '07

Hi, I have tried to rebuild boost.filesystem with D_WIN32_WINNT set to 0x0400 (with cxxflags) but it seems that it (cxxflags) was ignored and filesystem libs was build as without any cxxflags option. Command I run: bjam cxxflags=-D_WIN32_WINNT=0x0400 --with-filesystem toolset=msvc Are these flags (cflags, cxxflags) working? thanks Trigve ----- Original Message ---- From: Todd Greer <TGreer(a)affinegy.com> To: boost-users(a)lists.boost.org Sent: Saturday, July 14, 2007 12:04:21 AM Subject: Re: [Boost-users] [Boost.Filesystem] Program can't run under Win 98 On Thursday, July 12, 2007 7:27 AM Trigve Siver said: > I've got a problem running application that uses boost.filesystem on win > 98. I'm compiling it on Win XP SP2. The problem is the CreateHardLinkA > function. It seems that this functions was added lately to kernel32.dll > (Windows 2000 I think). Is there any solution to resolve this problem? > Anyway I don't use any links operations from boost.filesystem so I don't > care about this function. I'm using boost 1.34. With boost 1.33.1 > everything was working fine ( I think there wasn't code for link > operations). It would appear that #defining _WIN32_WINNT to 0x400 or less when compiling the filesystem library should exclude that code (and some related code with the same problem). I believe this can be done by setting cxxflags to -D_WIN32_WINNT when building, but I haven't tried it myself, and don't know much about the boost build system. Unless this problem is fixed for 1.34.1, I'll be learning the details myself in a few weeks, as it will otherwise block our upgrading. Have you filed a bug report at svn.boost.org? -- Todd _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users ____________________________________________________________________________________ Get the Yahoo! toolbar and be alerted to new email wherever you're surfing. http://new.toolbar.yahoo.com/toolbar/features/mail/index.php

2 1

[Boost.Graph] Unreachable nodes and dijkstra_shortest_paths
by Ewgenij Sokolovski 16 Jul '07

16 Jul '07

Hello. How does the distance_map container looks like if you apply the dijkstra_shortest_paths algorithm on a graph, and the graph is not connected? So how does the entry d[i] looks like if it is not possible to reach node i from the start node of the dijkstra_algorithm? I couldn't find this information in the online manual, the case of the predecessor_map is described there but not the one of the distance map. Regards Ewgenij -- GMX FreeMail: 1 GB Postfach, 5 E-Mail-Adressen, 10 Free SMS. Alle Infos und kostenlose Anmeldung: http://www.gmx.net/de/go/freemail

2 1

Building Boost with CMake/MSVC2005
by Olaf 16 Jul '07

16 Jul '07

Hi, I successfully build boost with cmake using MSVC2005/VS80 from sandbox - even boost::iostream with zlib support. The zlib.cpp is added to the project. Anyway, I get LINK : fatal error LNK1104: Datei "libboost_zlib-vc80-mt-gd-1_34.lib" kann nicht geöffnet werden. => means: could not found I have to set libboost_zlib-vc80-mt-gd-1_34.lib to ignore in the Studio Linker Settings. Does exist such a target in the cmake svn/build tree, or using jam? How to build it? I've never seen such on my linux box. Thanks Olaf

1 0

Reply formatting plea
by David Abrahams 16 Jul '07

16 Jul '07

When people reply without a blank line separating new from quoted text: > quote somebody saying something > about something they said Your reply to the original poster's thesis, or even: > > quote somebody saying > something about something they > said > Your reply to the quoted text It gets really hard (for me, at least) to distinguish what you wrote from what the other person wrote. I know this seems nitpicky, but I ask that anyone who can tolerate it leave a blank line around replies, as follows: > quote somebody saying something > about something they said Your reply to the original poster's thesis, or even: > quote somebody saying > something about something they > said Thanks, -- Dave Abrahams Boost Consulting http://www.boost-consulting.com The Astoria Seminar ==> http://www.astoriaseminar.com

1 0

Boost default library names
by Steven Mackenzie 16 Jul '07

16 Jul '07

I've just built and installed the boost 1.34 libraries from source on a Centos 4.4 Linux intsall, along side the default 1.32 Boost version that comes with RedHat/CentOS 4. The boost libraries have been installed in /usr/local/lib, but have very long and specific names, like libboost_program_options-gcc34-mt-1_34.so, and so to link against them I have to specify, for example, boost_program_options-gcc34-mt-1_34 instead of boost_program_options. Is there any quick change that I can make to create the extra symlinks, or are the long names deliberate and sensible? Thanks in advance for any suggestions, Steven

5 7

Bjam stage problem on Cygwin with RC2
by Václav Haisman 16 Jul '07

16 Jul '07

Hi, I just tried RC2 on Cygwin and got the error that is attached to this email. -- VH $ ./tools/jam/src/bin.cygwinx86/bjam.exe -d 2 --toolset=gcc --variant=release --threading=multi --optimization=speed stage Building Boost.Regex with the optional Unicode/ICU support disabled. Please refer to the Boost.Regex documentation for more information (don't panic: this is a strictly optional feature). /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/tools/build/v2/tools/stage.jam:424: in object(installed-shared-lib-generator)(a)4.run *** argument error * rule virtual-target.register ( target ) * called with: ( object(file-target)@1391 object(file-target)@1392 ) * extra argument object(file-target)@1392 /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/tools/build/v2/build/virtual-target.jam:880:see definition of rule 'register' being called /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/tools/build/v2/build/generators.jam:840: in try-one-generator-really /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/tools/build/v2/build/generators.jam:902: in try-one-generator /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/tools/build/v2/build/generators.jam:1110: in construct-really /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/tools/build/v2/build/generators.jam:1186: in generators.construct /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/tools/build/v2/tools/stage.jam:160: in construct /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/tools/build/v2/build/targets.jam:1242: in object(install-target-class)(a)65.generate /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/tools/build/v2/build/targets.jam:765: in generate-really /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/tools/build/v2/build/targets.jam:738: in object(main-target)(a)249.generate /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/tools/build/v2/build/targets.jam:895: in targets.generate-from-reference /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/tools/build/v2/build/targets.jam:1169: in generate-dependencies /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/tools/build/v2/build/targets.jam:1214: in object(alias-target-class)(a)71.generate /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/tools/build/v2/build/targets.jam:765: in generate-really /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/tools/build/v2/build/targets.jam:738: in object(main-target)(a)253.generate /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/tools/build/v2/build-system.jam:402: in load /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/tools/build/v2/kernel/modules.jam:261: in import /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/tools/build/v2/kernel/bootstrap.jam:132: in boost-build /cygdrive/c/wilx/cygwin-boost-1_34_0/boost_1_34_1/boost-build.jam:9: in module scope

4 7

program_options and unicode
by zh 16 Jul '07

16 Jul '07

Greetings. Say I have a situation like this one: po::options_description visible("Visible options"); visible.add_options() ("opt1", "opt1") ("opt2", "opt2") ("opt3", "opt3") ; po::options_description hidden("Hidden options"); hidden.add_options() ("opt4", po::value<string>(), "opt4") ; po::options_description all_options; all_options.add(visible).add(hidden); po::positional_options_description pos; pos.add("opt4", -1); po::variables_map vm; po::store(po::command_line_parser(argc, argv).options(all_options).positional(pos).run(), vm); po::notify(vm); Now I want to replace char* argv[] with wchar_t* in order to pass a Unicode file name to a Win32 SDK function CreateFile(). What would be, in your opinion, an appropriate course of action? I thank you in advance. ZA

3 3

[timer] incorrect time ?
by Ruediger Berlich 15 Jul '07

15 Jul '07

Hi there, the following program /****************************************************/ #include <iostream> #include <boost/timer.hpp> using namespace std; boost::timer t; main() { t.restart(); for(int i=0; i<5; i++){ usleep(500000); cout << t.elapsed() << endl << t.elapsed_min() << endl << t.elapsed_max() << endl; } } /****************************************************/ gives five times the following output, in 0.5 s intervals: 0 1e-06 9.22337e+12 I have tried the timer_test.cpp application (from http://www.boost.org/libs/timer/index.html) Most of it seems to be working, but the first messages also say: timer::elapased_min() reports 1e-06 seconds timer::elapased_max() reports 9.22337e+12 seconds, which is 2.56205e+09 hours After this the output seems to be fine. So something clearly is wrong. Any ideas ? This is on an OpenSuSE 10.2 system with a Boost 1.34.0 (with added ASIO support, 0.38rc3). g++ is 4.1.2 . Thanks and Best Regards, Ruediger

2 2

[IBD] Helping Boost Authors
by Matias Capeletto 14 Jul '07

14 Jul '07

Hello Boosters, We have a new resource at IBD: a section in the project Wiki called "Helping Boost Authors". http://svn.boost.org/trac/boost/wiki/HelpingBoostAuthors This section is a bazaar of friendly hands. We are teachers, experience users, native English speakers and artists. We want to offer our help to Boost authors to improve their documentation. * How to get helped Just send an email to the boost-docs list with your request. We will do our best to help you. * How to help Add yourself as a proofreader, a translator or in the general section if you have others ideas that Boost authors may find useful. The main objective of this new resource is to act as the main connection between Boost authors and some of IBD folks that are eager to help them. We hope this will make healthier the relation between Boost authors and our project. Authors will get helped, and have more time to improve and add new features to their libraries. We will get in touch with you and hopefully learn enough to become a boost author someday. It is a win-win situation. We hope we can make Boost authors life more enjoyable with regards to documentation. Eagerly waiting to help somebody, King regards Matias

1 0

Re: [Boost-users] [Boost.Filesystem] Program can't run under Win 98
by Trigve Siver 14 Jul '07

14 Jul '07

Hi, I was thinkig about setting _WIN32_WINNT to 0x400 and rebuilding boost.filesystem. I will try it for sure. Yes I've filled the bug report 5 minutes ago:) thanks Trigve ----- Original Message ---- From: Todd Greer <TGreer(a)affinegy.com> To: boost-users(a)lists.boost.org Sent: Saturday, July 14, 2007 12:04:21 AM Subject: Re: [Boost-users] [Boost.Filesystem] Program can't run under Win 98 On Thursday, July 12, 2007 7:27 AM Trigve Siver said: > I've got a problem running application that uses boost.filesystem on win > 98. I'm compiling it on Win XP SP2. The problem is the CreateHardLinkA > function. It seems that this functions was added lately to kernel32.dll > (Windows 2000 I think). Is there any solution to resolve this problem? > Anyway I don't use any links operations from boost.filesystem so I don't > care about this function. I'm using boost 1.34. With boost 1.33.1 > everything was working fine ( I think there wasn't code for link > operations). It would appear that #defining _WIN32_WINNT to 0x400 or less when compiling the filesystem library should exclude that code (and some related code with the same problem). I believe this can be done by setting cxxflags to -D_WIN32_WINNT when building, but I haven't tried it myself, and don't know much about the boost build system. Unless this problem is fixed for 1.34.1, I'll be learning the details myself in a few weeks, as it will otherwise block our upgrading. Have you filed a bug report at svn.boost.org? -- Todd _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users ____________________________________________________________________________________ Pinpoint customers who are looking for what you sell. http://searchmarketing.yahoo.com/

1 0

[Boost.Filesystem] Program can't run under Win 98
by Trigve Siver 13 Jul '07

13 Jul '07

Hi I've got a problem running application that uses boost.filesystem on win 98. I'm compiling it on Win XP SP2. The problem is the CreateHardLinkA function. It seems that this functions was added lately to kernel32.dll (Windows 2000 I think). Is there any solution to resolve this problem? Anyway I don't use any links operations from boost.filesystem so I don't care about this function. I'm using boost 1.34. With boost 1.33.1 everything was working fine ( I think there wasn't code for link operations). thanks Trigve ____________________________________________________________________________________ Pinpoint customers who are looking for what you sell. http://searchmarketing.yahoo.com/

2 1

[boost:filesystem] - linker errors.
by chun ping wang 13 Jul '07

13 Jul '07

k i have program a.h that uses boost filesystem. b.h includes a.h and also uses boost::filesystem.. when i build i get this error. C:/Boost/include/boost_1_34/boost/filesystem/convenience.hpp:70: multiple defini tion of `boost::filesystem::basename(boost::filesystem::basic_path<std::string, boost::filesystem::path_traits> const&)' ./teng/lib/libmy.a(my.o):C:/Boost/include/boost_1_34/boost/filesys tem/convenience.hpp:70: first defined here ./teng/lib/libmy.a(my2.o): In function `ZN5boost10filesystem9exten sionERKNS0_10basic_pathISsNS0_11path_traitsEEE': C:/Boost/include/boost_1_34/boost/filesystem/convenience.hpp:58: multiple defini tion of `boost::filesystem::extension(boost::filesystem::basic_path<std::string, boost::filesystem::path_traits> const&)' ./teng/lib/libmy.a(my.o):C:/Boost/include/boost_1_34/boost/filesys tem/convenience.hpp:58: first defined here

2 2

Re: [Boost-users] Question
by question boost 13 Jul '07

13 Jul '07

Hi, I don't understant what you are saying excactly. What do you mean by "to put the path to mingw from CodeBlock in your PATH environnement variable (Control Panel/System/Advanced/Environment variables)"? Give an example (fictious data) and then it will be clear to me. Thank you.> To: boost-users(a)lists.boost.org> Wrom: NQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULH _________________________________________________________________ David Guetta a réuni les sons les plus connus de Messenger dans le Mix Messenger, le son de l’été ! Téléchargez-le gratuitement ! http://specials.divertissements.fr.msn.com/mixmessenger

2 1

deep copying reference_wrapper<>s in a bind()
by Edd Dawson 13 Jul '07

13 Jul '07

Hi folks, I'm currently attempting to create a little facility that will allow me to eaily kick off a function call in another thread and get the result through a "future". Something like: unsigned count_primes_upto(std::size_t max); async::layered_cage < std::exception, std::domain_error, async::catch_all > cage; // to catch exceptions // call count_primes_upto(9876543210) in another thread async::future<unsigned> n = async::call(cage, &count_primes_upto, 9876543210); // do other stuff in the mean time // ... // Block until done. Get result or propagate exception std::cout << "there are " << n.value() << " primes less than " << 9876543210 <<'\n'; To achieve this I'm using boost::bind and boost::function quite heavily. I've discovered that by the time the final boost::function<void ()> is composed for the boost::thread constructor, I've copied each of the arguments (such as 9876543210 in the above) about 30 times!. Now, I can use boost::ref() internally in such a way that no copying of arguments happens at all. However, this is also undesirable; I would like the thread that is created to have its own copy of each argument unless the client explicitly wraps an argument in boost::ref/cref in order to avoid dangling cross-thread references. So what I'd like is a way to copy the result of my final boost::bind() call in to a new functor where all the ref() arguments are deep-copied once and only once at the end. Is there some way of doing this? Perhaps the "as yet undocumented" visit_each is relevant, here? Kind regards, Edd

2 5

[wave] linking errors for the head revision
by Ovanes Markarian 13 Jul '07

13 Jul '07

Hartmut, applying your patch from the CVS head (which you produced in request to multi-thread safety and conditional preprocessing) results in linking problems. I tried compiling with boost_1_34_0 and boost_1_34_1_RC2. Here are some of the errors which are produced by the linker. The interesting thing is that threading library is compiled fine. instantiate_cpp_exprgrammar.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall boost::lock_error::~lock_error(void)" (??1lock_error@boost@@UAE@XZ) instantiate_cpp_grammar.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall boost::lock_error::~lock_error(void)" (??1lock_error@boost@@UAE@XZ) instantiate_cpp_literalgrs.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall boost::lock_error::~lock_error(void)" (??1lock_error@boost@@UAE@XZ) instantiate_defined_grammar.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall boost::lock_error::~lock_error(void)" (??1lock_error@boost@@UAE@XZ) With Kind Regards, Ovanes Markarian

2 4

Re: [Boost-users] [Graph] Maximum Cardinality Matching: weighted?
by Jean-Francois Bastien 13 Jul '07

13 Jul '07

> Hi Jean-Francois, > > Sorry, but the BGL currently doesn't have an implementation > of weighted matching, even for bipartite graphs. Edmonds' > algorithm works only on unweighted graphs. I'd been looking for an algorithm before I found Boost's implementation (which turns out to be a no-match for my problem); the Hungarian algorithm seems to do the thing but it seems to be the first algorithm developped to solve such problem and I've read it's not as good as the latest algorithms (correct me if that's wrong). Unfortunately the litterature gets a bit hard to read for me who know nothing of graph theory. I'd nonetheless like to (try to) implement for a maximum weighted maximum cardinality matching solver potentially unbalanced complete weighted bipartite graph, and if it works out add it to the BGL. Which algorithm (paper or source references would be appreciated) should I implement to do this efficiently, if not the Hungarian algorithm? > > Regards, > Aaron JF

1 0

Re: [Boost-users] Question
by frederic.bron＠alcan.com 13 Jul '07

13 Jul '07

What are you trying to do? Building the library or building a program. If you want to build the library, 1st get bjam from here: http://sourceforge.net/project/showfiles.php?group_id=7586&package_id=72941 Download boost-jam-3.1.14-1.ntx38.zip You will get from the zip file bjam.exe which you then do not need to build yourself! The next step is to build the boost library itself using bjam. I think the best is 1st to put the path to mingw from CodeBlock in your PATH environnement variable (Control Panel/System/Advanced/Environment variables) Then I think bjam can find alone the path to your gcc. F. Bron question boost <question.boost@h Pour : <frederic.bron(a)alcan.com> otmail.fr> cc : Objet : Bjam 12/07/2007 13:37 Hi Frederic Bron, using Code Blocks i got the following message:ld.exe "Cannot find -lboost_filesystem-mgw-mt-s-l_33_l"Then I do: cd C:\Documents and Settings\Administrateur\Bureau\boost_1_34_0\boost_1_34_0\tools\jam\src thenC:\Documents and Settings\Administrateur\Bureau\boost_1_34_0\boost_1_34_0\tools\jam\src\build.batThen I set the following variables:BOOST_ROOT= C:\Documents and Settings\src\boostand BOOST_BUILD_PATH=C:\Documents and Settings\src\boost\tools\build\v2. I don't know what to do now. You have told me the version of boost was the solution but it isn't. I ask you because I suppose that as a Boost user , you have already configured Bjam. I've run build.bat (see bjam.qbk) then i've set the variables BOOST_ROOT and BOOST_BUILD_PATH but I get the message again. What is the solution? Thank You Frederic Bron Besoin d'un e-mail ? Créez gratuitement un compte Windows Live Hotmail et bénéficiez d'un filtre antivirus gratuit ! Windows Live Hotmail Avis : Ce message et toute pièce jointe sont la propriété d'Alcan et sont destinés seulement aux personnes ou à l'entité à qui le message est adressé. Si vous avez reçu ce message par erreur, veuillez le détruire et en aviser l'expéditeur par courriel. Si vous n'êtes pas le destinataire du message, vous n'êtes pas autorisé à utiliser, à copier ou à divulguer le contenu du message ou ses pièces jointes en tout ou en partie. Notice: This message and any attachments are the property of Alcan and are intended solely for the named recipients or entity to whom this message is addressed. If you have received this message in error please inform the sender via e-mail and destroy the message. If you are not the intended recipient you are not allowed to use, copy or disclose the contents or attachments in whole or in part.

1 0

[smart_ptr]why scoped_ptr c ann't used in this case, yet shared_ptr ca n
by hongleij＠126.com 13 Jul '07

13 Jul '07

//cpeer.h #ifndef CPEER_H_ #define CPEER_H_ #include <string> struct CPeer { std::string name; }; #endif /*CPEER_H_*/ //cpeermanager.h #ifndef CPEERMANAGER_H_ #define CPEERMANAGER_H_ class CPeer; #include <boost/shared_ptr.hpp> #include <boost/scoped_ptr.hpp> class CPeerManager { public: CPeerManager(); boost::scoped_ptr<CPeer> cp_; //error // boost::shared_ptr<CPeer> cp_; // ok }; #endif /*CPEERMANAGER_H_*/ //cpeermanager.cpp #include "cpeer.h" #include "cpeermanager.h" CPeerManager::CPeerManager(): cp_ (new CPeer() ) { } //main.cpp #include "cpeermanager.h" int main() { CPeerManager cp; } i get **** Build of configuration Debug for project scoped_ptr_test **** make -k all 'Building file: ../cpeermanager.cpp' 'Invoking: GCC C++ Compiler' g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"cpeermanager.d" -MT"cpeermanager.d" -o"cpeermanager.o" "../cpeermanager.cpp" 'Finished building: ../cpeermanager.cpp' ' ' 'Building file: ../main.cpp' 'Invoking: GCC C++ Compiler' g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"main.d" -MT"main.d" -o"main.o" "../main.cpp" c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp: In function 'void boost::checked_delete(T*) [with T = CPeer]': c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/scoped_ptr.hpp:77: instantiated from 'boost::scoped_ptr<T>::~scoped_ptr() [with T = CPeer]' ../cpeermanager.h:11: instantiated from here c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:32: error: invalid application of 'sizeof' to incomplete type 'CPeer' c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:32: error: creating array with negative size ('-0x000000001') c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:33: error: invalid application of 'sizeof' to incomplete type 'CPeer' c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:33: error: creating array with negative size ('-0x000000001') c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:34: warning: possible problem detected in invocation of delete operator: c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:29: warning: 'x' has incomplete type ../cpeermanager.h:4: warning: forward declaration of 'struct CPeer' c:/mingw/bin/../lib/gcc/i686-pc-mingw32/4.1.2/../../../../include/boost/checked_delete.hpp:34: note: neither the destructor nor the class-specific operator delete will be called, even if they are declared when the class is defined. make: *** [main.o] Error 1 make: Target `all' not remade because of errors. Build complete for project scoped_ptr_test /// why boost::shared_ptr can used to Minimize compilation dependencies between files, yet boost::scoped_ptr cannot. I needn't to use reference cout.may someboby help me out of the trouble.thanks! iPod、万点巨额点卡、奖学金……海量奖品，想拿就拿！

4 4

Re: [Boost-users] Boost with threadpool
by Gopalan, Srinivasan (MLITS) 13 Jul '07

13 Jul '07

Hi, Since I am new to boost I don't know about this defer package. Is this a separate package to be compiled and linked with boost before using threadpool. Srini. -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Oliver.Kowalke(a)qimonda.com Sent: Wednesday, July 11, 2007 7:08 PM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] Boost with threadpool Hi, take look at defer package in the boost vault. Oliver _____ From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Gopalan, Srinivasan (MLITS) Sent: Wednesday, July 11, 2007 8:03 AM To: boost-users(a)lists.boost.org Subject: [Boost-users] Boost with threadpool Hi all, I would like to know whether any version of boost uses threadpool. Also there is a separate threadpool package. I would like to know how to link this package with boost. Thanks, Srini. _____ This message w/attachments (message) may be privileged, confidential or proprietary, and if you are not an intended recipient, please notify the sender, do not use or share it and delete it. Unless specifically indicated, this message is not an offer to sell or a solicitation of any investment products or other financial product or service, an official confirmation of any transaction, or an official statement of Merrill Lynch. Subject to applicable law, Merrill Lynch may monitor, review and retain e-communications (EC) traveling through its networks/systems. The laws of the country of each sender/recipient may impact the handling of EC, and EC may be archived, supervised and produced in countries other than the country in which you are located. This message cannot be guaranteed to be secure or error-free. This message is subject to terms available at the following link: http://www.ml.com/e-communications_terms/. By messaging with Merrill Lynch you consent to the foregoing. _____

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Re: [Boost-users] Building Boost on Solaris 10.
by Sabyasachi Nath 13 Jul '07

13 Jul '07

Thanks Markus, I am going to give a try. Hope for the best!!! Thanks & Regards, Sabyasachi Nath Product Development Unit UshaComm India Pvt Ltd Emp Id 1295 WS 441 Tel: 9133-22812803/05/06 Mo: 919830622831 Extn 230 -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org]On Behalf Of Markus Bernhardt Sent: Friday, July 13, 2007 10:41 AM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] Building Boost on Solaris 10. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Sabyasachi, I'm using boost 1.34.0 on Solaris 10 with Sun Studio 11. In 1.34.0 building on Solaris is a little bit broken. You are using commands for 1.32.0. They are not working any more. See my attached stripped down Makefile. Haven't tested this stripped down version. Hope it works. 0. You need to have the following tools in $PATH - gpatch - gmake - gtar - CC 1. Unpack the tar-file. 2. copy boost_1_34_0.tar.gz to thirdparty/packages 3. cd thirdparty 4. gmake The generated binaries are 64-bit. If you want 32-bit binaries, remove the line: $(PATCH) -p1 < $(local_srcdir)/patches/$(BOOST).patch.$(ARCHCC) || exit 1; \ (2 occurrences !!!) I only build the libs: - - thread - - serialization - - filesystem If you need other libs add "--with-<libraryname>" everywhere, where you see "--with-thread" Kind regards, Markus - -- Software Consulting Markus Bernhardt GmbH Spieljochstr. 34 81825 München Fon: +49-89-420903-14 Fax: +49-89-420903-20 www: http://www.scmb.de Geschäftsführung Markus Bernhardt Handelsregister AG München HRB 125966 USt-Id DE201885231 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGlwlkdnooMonJSYkRAvBbAJwMzr6wTk1/qlrfMy4JAZ4vrEhJkACcCWKS cPjrOgAQwivsGSqPaBdD25Q= =YhTA -----END PGP SIGNATURE-----

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Re: [Boost-users] Building Boost on Solaris 10.
by Markus Bernhardt 13 Jul '07

13 Jul '07

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Sabyasachi, I'm using boost 1.34.0 on Solaris 10 with Sun Studio 11. In 1.34.0 building on Solaris is a little bit broken. You are using commands for 1.32.0. They are not working any more. See my attached stripped down Makefile. Haven't tested this stripped down version. Hope it works. 0. You need to have the following tools in $PATH - gpatch - gmake - gtar - CC 1. Unpack the tar-file. 2. copy boost_1_34_0.tar.gz to thirdparty/packages 3. cd thirdparty 4. gmake The generated binaries are 64-bit. If you want 32-bit binaries, remove the line: $(PATCH) -p1 < $(local_srcdir)/patches/$(BOOST).patch.$(ARCHCC) || exit 1; \ (2 occurrences !!!) I only build the libs: - - thread - - serialization - - filesystem If you need other libs add "--with-<libraryname>" everywhere, where you see "--with-thread" Kind regards, Markus - -- Software Consulting Markus Bernhardt GmbH Spieljochstr. 34 81825 München Fon: +49-89-420903-14 Fax: +49-89-420903-20 www: http://www.scmb.de Geschäftsführung Markus Bernhardt Handelsregister AG München HRB 125966 USt-Id DE201885231 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGlwlkdnooMonJSYkRAvBbAJwMzr6wTk1/qlrfMy4JAZ4vrEhJkACcCWKS cPjrOgAQwivsGSqPaBdD25Q= =YhTA -----END PGP SIGNATURE-----

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Apparent defect with boost::bind macro used for member function with boost::function
by Ben McCart 13 Jul '07

13 Jul '07

There appears to be a defect in bound_memfunc_ptr. This occurs when using boost::bind macro to bind an object with its class member function for use with the boost::function pointer. For example, when using boost::bind to bind an object and associated class member function to a pointer like this: class A { public: void some_function(int i){}; }; A a1; boost::function<void, int> pfa1; pfa1 = boost::bind(&A::some_function, &a1, _1); ...the bound_memfunc_ptr.memfunc_ptr is populated with the address of A::some_function. However, the bound_memfunc_ptr.obj_ptr apears to be uninitialized. (pfa1.functor.bound_memfunc_ptr.obj_ptr has an address of 0xcccccccc in MSVC 2005) The function pointer works just fine to make calls. Internally the functor is storing the address of a1. However the address of a1 is not exposed through the bound_memfunc_ptr interface. I have assumed that the obj_ptr member which is of type void* is supposed to be the address of a1. Since a1's address is not exposed, it is not possible to distinguish between boost::function pointers that point to a1's member some_function() and any other object of class A. With this condition boost::function is unsuitable for use in an observer design pattern since there is no way to distinguish which boost::function pointer points to an observer when an observer wants to remove itself (unsubscribe) from an event. So, does anybody have any recommendations? Is the obj_ptr member supposed to be what I think it is, or is it for another purpose? Is there any other way to get at the address of a bound object, so that the boost::function pointer can be uniquely identified? Thanks in advance, ~Ben

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[smart_ptr] Getting segfaults with weak_ptr<T>::lock()
by Buddha Buck 13 Jul '07

13 Jul '07

I've run into a problem where a weak_ptr<> is segfaulting when I try to do a lock() call on it. It doesn't happen all the time, and I'm at a loss to see what's causing the problem. I have an implementation of the Observer pattern in my code using shared_ptr/weak_ptr: class Observer { public: virtual void update(shared_ptr<Observed> d) = 0; ... } class Observed : public enable_shared_from_this<Observed> { vector<weak_ptr<Observer> > _observers; public: void register(shared_ptr<Observer> o) { _observers.push_back(weak_ptr<Observer>(o)); } void notifyObservers() { vector<weak_ptr<Observer> >::iterator i; for (i = _observers.begin(); i != _observers.end(); observer++) { shared_ptr<Observer> o = i->lock(); if (o) o->update(shared_from_this()); } } ... } I'm trying to write a wxWidget that participates in the above Observer scheme, but quickly ran into a problem: wxWidgets passes around raw pointers and handles its own garbage-collection. If I created a shared_ptr<MyWidget>, wx would feel perfectly free to delete the object out from under the shared_ptr<>, which would be bad. My solution was: template <typename T> class wxObserver : public Observer { private: T* p; wxObserver(); public: wxObserver(T* p) : p(p); void update(shared_ptr<Observed> o) { if (p) p->update(o); } } class MyWidget : public wxWidget { private: shared_ptr<wxObserver<MyWidget> > observer; public: MyWidget(...) : wxWidget(...), observer(this) { ... observed->register(observer); ... } ... } The idea is that when a MyWidget is created, it creates a shared pointer to a wxObserver and can register that wxObserver with observed objects without a problem. When wxWidgets chooses to delete the MyWidget, the shared pointer the MyWidget goes away, the wxObserver is deleted, and the weak pointers held by the observed objects expire. The implementation of Observed::notifyObservers() checks to make sure that the observers still exist before update()ing them, and only the live observers are updated. The problem is that sometimes, after wxWidgets destroys a MyWidget, calls to Observed::notifyObservers() crashes with a segfault within the call to i->lock(). I can't see what's causing this. Worse, while it crashes consistantly and repeatedly at the same line, it doesn't appear to always crash after the same amount of work. Putting various {cerr << "got here";}-type lines within the code above doesn't always yield exactly the same results from run to run, even without recompiling. My thoughts are now that it might be a threading issue. Is there any good solutions to this problem? thanks, Buddha

2 4

Re: [Boost-users] Why does G++ have no auto-linking like VC?
by Olaf van der Spek 13 Jul '07

13 Jul '07

Hi, Why does G++ have no auto-linking like VC? And what is the recommended way to link to a Boost lib with g++ or make? Please CC me, I'm not on the list. Olaf

3 4

[Graph] Maximum Cardinality Matching: weighted?
by Jean-Francois Bastien 12 Jul '07

12 Jul '07

Hello, I am just starting on using boost::graph and I would like to solve the following problem: I have a potentially unbalanced complete weighted bipartite graph and I would like to find the maximum weighted maximum cardinality matching for it. The immediate candidate for this seems to be the checked_edmonds_maximum_cardinality_matching. I realize that my graph is bipartite and that Edmond's algorithm is for general graph, but the graph library doesn't seem to have an algorithm optimized for bipartite graphs (please correct me if I'm wrong on this). My problem is this: in reading the documentation and the code I seem to understand that the implementation doesn't take into account the weight of the graphs. I'd like to know if it does take weights into account or not before I dive into learning the boost::graph library just to realize that it doesn't solve my problem. If the implementation doesn't take weights into account then is there another algorithm (or combination thereof) that I've overlooked from the library which could solve my problem? Sincerely, JF

2 1

Suggestion for iterator_facade documentation
by Max Motovilov 12 Jul '07

12 Jul '07

It is not immediately obvious how to correctly specify the template arguments for boost::iterator_facade<> with an output iterator. This particular case is not mentioned in the tutorial and the first impression is that using such category as std::output_iterator_tag should be all that's required. This is not the case; in order for the postincrement temporary NOT to create a copy of a [fake] pointed-to value OR a copy of the proxy, the user has to be very careful about Value and Reference arguments. Took me 3 tries and a thorough look into the sources to get it right: Value=<argument of Proxy::operator=> and Reference=Proxy&. Would be nice to add this use case to the tutorial since it is definitely tricky and error-prone as it is. Of course there might be ANOTHER piece of documentation describing it that I missed :( Regards, ...Max...

2 3

Re: [Boost-users] Question
by question boost 12 Jul '07

12 Jul '07

Hi Chun ping Wang, you seem to understand my problem. You say to run build.bat (see bjam.qbk), it's ok. Then you say to configure my environment. I've set the variables BOOST_ROOT and BOOST_BUILD_PATH but I get the message again. So I ask you what do you mean exactly by "configuring my environment"? Be very clear.(Step by step) Thank You Chun Ping Wang Date: Mon, 25 Jun 2007 07:49:14 -0700From: cablepuff(a)gmail.comTo: boost-users(a)lists.boost.orgSubject: Re: [Boost-users] QuestionYou need to build boost most likely with bjam. If your under windows go to tools/jam/src and type build.bat or if under unix ./build.sh and it should automatically build bjam.exe . You might need to configure your enviornment though. On 6/25/07, question boost <question.boost(a)hotmail.fr> wrote: Hi, using Code Blocks i get the folowing message.ld.exe "Cannot find -lboost_filesystem-mgw-mt-s-l_33_l"How and where can I get this file?Thank You Besoin d'un e-mail ? Créez gratuitement un compte Windows Live Hotmail et bénéficiez d'un filtre antiphishing gratuit ! Windows Live Hotmail_______________________________________________Boost-users mailing listBoost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users _________________________________________________________________ Besoin d'un e-mail ? Créez gratuitement un compte Windows Live Hotmail, plus sûr, plus simple et plus complet ! http://www.windowslive.fr/hotmail/default.asp

3 2

[Boost.Graph] Property map of a bundled property
by Ewgenij Sokolovski 12 Jul '07

12 Jul '07

Nobody knows the answer?:) Am I the only one confronted with this question? I mean I could define a structure to include my distance and pass it as a bundled property but isn't that a rather unclean way to manage the problem? Cheers Ewgenij

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Re: [Boost-users] Building Boost on Solaris 10.
by Sabyasachi Nath 12 Jul '07

12 Jul '07

When using "--with-toolset=sun" it gives a message of unknown toolset. Whereas by using "--with-toolset=sunpro" it runs but giving the same problem. Thanks & Regards, Sabyasachi Nath Product Development Unit UshaComm India Pvt Ltd Emp Id 1295 WS 441 Tel: 9133-22812803/05/06 Mo: 919830622831 Extn 230 -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org]On Behalf Of Rene Rivera Sent: Wednesday, July 11, 2007 9:50 PM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] Building Boost on Solaris 10. Sabyasachi Nath wrote: > I am new with Boost. I am facing the following problem while building Boost > 1.34.0. ... > ============ > -bash-3.00$ ./configure -- > prefix=/disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0 --with-libraries=all ... > Can anybody please sort out what the problem is? Add a "--with-toolset=sun" to the configure. -- -- Grafik - Don't Assume Anything -- Redshift Software, Inc. - http://redshift-software.com -- rrivera/acm.org - grafik/redshift-software.com -- 102708583/icq - grafikrobot/aim - grafikrobot/yahoo _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

2 1

Compressed socket iostream
by gyrotech＠freakinabox.com 12 Jul '07

12 Jul '07

I've been looking over the boost documentation, but I can find anything to help me create an iostream for a socket. Can anyone point me in the direction of a tutorial or such that could help?? I found some references to asio, which was merged with boost in 2005, but the iostreams documentation was last updated in 2004. Also, is it possible\easy to add one of the compressing streams (basic_zlib_compressor for example) to an output socket stream so all the data sent over that TCP connection is compressed?? And on top of all of this, how would I go about making a stream that, if it had a socket connection, would stream data over that, otherwise to a file, both with the aforementioned compression? Thanks in advance, GyroTech

2 1

[lexical_cast] C4701 local variable 'result' may be used without having been initialized
by Berny Cantos 12 Jul '07

12 Jul '07

Hi, I'm using boost::lexical_cast often in my application, but then I use it to convert strings to integral types and the compiler (MSVC 7.1) threw me a warning: C4701: local variable 'result' may be used without having been initialized Looking at lexical_cast implementation I found this template<typename Target, typename Source> Target lexical_cast(Source arg) { detail::lexical_stream<Target, Source> interpreter; // THIS is guilty of not been initialized Target result; if(!(interpreter << arg && interpreter >> result)) throw_exception(bad_lexical_cast(typeid(Source), typeid(Target))); return result; } I was asking myself... why not use Fernando Cacciola's boost::value_initialized to avoid these warnings? template<typename Target, typename Source> Target lexical_cast(Source arg) { detail::lexical_stream<Target, Source> interpreter; // This can't raise any uninitialized related warning boost::value_initialized<Target> result; if(!(interpreter << arg && interpreter >> get(result))) // Must use get idiom throw_exception(bad_lexical_cast(typeid(Source), typeid(Target))); return get(result); // Must use get idiom } Somebody can explain me this? Is this warning a compiler issue? Thanks in advance Berny Cantos AZ Interactive SL

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[1.34.1] Release Candidate 2
by Thomas Witt 12 Jul '07

12 Jul '07

Hi, The 1.34.1 release candidate 2 is now available from http://www.boost.org/release/ please give it a try and report any problems to the developer list or directly to me. Unless a major issue surfaces this will ship as 1.34.1 on July 13th. Thanks Thomas -- Thomas Witt witt(a)acm.org

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[Boost.Lambda] Can't bind (do a partial application on) basic operands
by Kirit Sælensminde 11 Jul '07

11 Jul '07

I'm trying to really understand the limits of what can be done in C++ with Boost.Function and Boost.Lambda by implementing a number of functional programming idioms in C++. I've done a few fairly complicated things, but seem to have run into a problem with a really basic one. I just want to do a partial application on some basic operands. This is what I'm trying to do: boost::function< int( int ) > increment( boost::lambda::_1 + 1 ); This gives an error that operator + isn't defined for the Boost placeholder type. If I add the following it works: template< typename V > V add( V l, V r ) { return l + r; } template< typename S > boost::function< S ( S ) > operator +( const boost::lambda::placeholder1_type, S s ) { return boost::lambda::bind( add< S >, boost::lambda::_1, s ); } I guess there's a huge number of these that could (should?) be added. Is this an oversight, or am I doing things with the library that I'm not meant to do? I'm using MSVC 7.1 and Boost 1.34.0 release candidate. K

1 0

Building Boost on Solaris 10.
by Sabyasachi Nath 11 Jul '07

11 Jul '07

Hi Everybody, I am new with Boost. I am facing the following problem while building Boost 1.34.0. My system is Solaris 10. Compiler :- -bash-3.00$ CC -V CC: Sun C++ 5.8 Patch 121017-10 2007/02/21 ************** >From my $BOOST_ROOT location I started my building and installation as follows. ======== ============ -bash-3.00$ ./configure -- prefix=/disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0 --with-libraries=all -n Building Boost.Jam with toolset sunpro... tools/jam/src/bin.solaris/bjam ./configure: python: not found -n Unicode/ICU support for Boost.Regex?... /usr Generating Boost.Build configuration in user-config.jam... Generating Makefile... ============== -bash-3.00$ make install ./tools/jam/src/bin.solaris/bjam -sICU_PATH=/usr --user-config=user-config.jam - -prefix=/disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0 --exec- prefix=/disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0 -- libdir=/disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0/lib -- includedir=/disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0/include install sunpro.jam: No such file or directory /disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0/tools/build/v2/build/toolset.j am:27: in toolset.using rule sunpro.init unknown in module toolset. /disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0/tools/build/v2/build/project.j am:825: in using user-config.jam:5: in modules.load /disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0/tools/build/v2/build- system.jam:138: in load /disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0/tools/build/v2/kernel/modules. jam:261: in import /disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0/tools/build/v2/kernel/bootstra p.jam:132: in boost-build /disk2/sabyasachi/Boost_1.34.0/Build/boost_1_34_0/boost-build.jam:9: in module scope Not all Boost libraries built properly. -bash-3.00$ ================ Can anybody please sort out what the problem is? Thanks in advance. Sabyasachi..

2 1

composing with boost::bind
by Pieter Op de Beeck 11 Jul '07

11 Jul '07

Hi, I would like to accomplish the following: "bind a functor to a reference and compose this with another functor". Ultimately I would like to use this composition with the reference embedded in it. If I write it like this: functor_type h = bind(f, bind(g, ref(b))); it works alright. However, in my situation the binding of g is done somewhere else in the program, so have: functor_type temp = bind(g, ref(b)); ... functor_type h = bind(f, temp); Sadly enough this does not appear to work. I don't have a reference to b in h(). I'm sure bind works the way it was intended. I'm more interested in whether you guys now how to achieve the effect I'm trying to achieve? Much appreciated, Pieter. Some additional context: using namespace boost; typedef function<bool ()> functor_type; struct f { bool operator()(bool b) { return !b; } }; struct g { bool operator()(bool b) { return b; } }; bool b; The effect I'm trying to achieve: b = true; b = h(); // produces !b, so b is now false b = h(); // produces !b, so b is now true (in the second case above this would produce false again because there appears to be no reference to b in h()) Pieter Op de Beeck www.visysglobal.com

2 2

Boost with threadpool
by Gopalan, Srinivasan (MLITS) 11 Jul '07

11 Jul '07

Hi all, I would like to know whether any version of boost uses threadpool. Also there is a separate threadpool package. I would like to know how to link this package with boost. Thanks, Srini. -------------------------------------------------------- This message w/attachments (message) may be privileged, confidential or proprietary, and if you are not an intended recipient, please notify the sender, do not use or share it and delete it. Unless specifically indicated, this message is not an offer to sell or a solicitation of any investment products or other financial product or service, an official confirmation of any transaction, or an official statement of Merrill Lynch. Subject to applicable law, Merrill Lynch may monitor, review and retain e-communications (EC) traveling through its networks/systems. The laws of the country of each sender/recipient may impact the handling of EC, and EC may be archived, supervised and produced in countries other than the country in which you are located. This message cannot be guaranteed to be secure or error-free. This message is subject to terms available at the following link: http://www.ml.com/e-communications_terms/. By messaging with Merrill Lynch you consent to the foregoing. --------------------------------------------------------

2 1

[IBD] Weekly news: 2007-07-04 to 2007-07-10
by Matias Capeletto 11 Jul '07

11 Jul '07

================================================== Hi Boost, Once a week, we will send you a brief of our work for the Improving Boost Docs project. We need more hands, join us! We are waiting you on the boost-docs list. Project Wiki: http://svn.boost.org/trac/boost/wiki/ImprovingBoostDocs RSS news feed: http://beta.boost.org/development/ibd_news.rss Community Blog: http://improving-boost-docs.blogspot.com ================================================== 2007-07-10 ------------------------------------------------------------------------------------- * Jake joins the community Blog He writes: I feel that it would be helpful if there was a little bit of standardization in the layout/content of the documentation. A lot of the documentation implements similar ideas (one minute tutorials, introductions, reference sections), but each individual libraries documentation has the earmarks of the authors. more... http://tinyurl.com/3btnae 2007-07-09 ------------------------------------------------------------------------------------- * Resources Section added to the Community Blog "The Blog is a one-stop shop" -- Stjepan more... http://improving-boost-docs.blogspot.com 2007-07-08 ------------------------------------------------------------------------------------- * Two proof-readers join the project Thanks Paul Giaccone and Jake Voytko for jumping in. more... http://tinyurl.com/2optqg * Boost community feedback on our objectives Since we want to build a long term subcommunity which main purpose is to continuously improve the quality of Boost documentation, we would like that our main directives be aligned with the Boost community as a whole. more... http://tinyurl.com/3czjfn 2007-07-07 ------------------------------------------------------------------------------------- * Resources Section added to the Wiki At IBD we use several open source tools to organize our efforts. In this section the purpose of each resource is explained. When possible, IBD resources will be interlinked and share a common look and feel allowing a consistent experience for both users and developers. more... http://tinyurl.com/2uxfut#Resources 2007-07-06 ------------------------------------------------------------------------------------- * Help request, A woman's point of view Is there any female Booster willing to help us? more... http://tinyurl.com/2om8ek * Stjepan joins the community Blog He add a post about his experience transalting smart_ptr docs. more... http://tinyurl.com/3d3r93 * Help request, Python programmers There are two specific projects that need Python programmers: 1) http://svn.boost.org/trac/boost/wiki/BoostSpecificWikiMacros 2) http://svn.boost.org/trac/boost/wiki/QuickbookWikiProcessor more... http://tinyurl.com/2lqe2p * Two testers join the project Stuart help request was answered by Chun Ping Wang and Marco. Welcome to IBD! more... http://tinyurl.com/323uf5 2007-07-05 ------------------------------------------------------------------------------------- * IBD RSS news feed The IBD news feed consists of formal announces about the things going on in the project, they are very short and direct headlines. Some of the common subjects are new members, new subprojects, help requests and completed translation. more... http://beta.boost.org/development/ibd_news.rss * New Community Blog A record of the things that happens behind the scenes, our next objectives and the social and philosophical aspects of IBD. more... http://improving-boost-docs.blogspot.com 2007-07-04 ------------------------------------------------------------------------------------- * Translation of Boost.Boostbook completed We have translated boostbook docs to quickbook and add a sections about boosbook specific HTML params. more... http://tinyurl.com/32zgtm * Our team mascot Give a warm welcome to Mafalda, our team mascot. She is a English Springer Spaniel from Argentina, currently living with Matias. Mafalda is helping him with the project Wiki page. She just barks once in a while, but that is a lot. more... http://tinyurl.com/2uxfut#team_mascot * Stuart Dootsoon's help request for the Browser testing project We need more testers to cover all the possible browsers and platforms combinations. more... http://tinyurl.com/2q6csw

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Re: [Boost-users] problem message bis new
by question boost 11 Jul '07

11 Jul '07

They say: step 1 run buil.bat step 2 set BOOST_ROOT and BOOST_BUILD_PATH. I've runed build.bat and I have set BOOST_ROOT and BOOST_BUILD_PATH. It's not the right thing to do. My question is (only for a programmer who has the response): What is the right thing to do (step 1,step 2, step3, step4, step5, step 6 and so on)? Thank You > From: ghost(a)cs.msu.su> To: boost-users(a)lists.boost.org> Date: Wed, 11 Jul 2007 11:34:16 +0400> Subject: Re: [Boost-users] problem message bis new> > question boost wrote:> > > > > Hi,> > I repeat: the version of Boost is not the solution of the problem message.> > What must I do now after the run of build.bat and the set of the two main> > variables?> > Let me start with some trivial aspects.> > 1. Reposting a question every day is not polite. There's no guaranteed> 24-hour response time here.> > 2. It would be more polite if you messages had your real name in> the "From" field. I presume "question boost" is not your real name.> > As for your question, you don't seem to have followed the getting started document.> Setting BOOST_ROOT and BOOST_BUILD_PATH without building boost is not> going to have any effect whatsoever.> > - Volodya> > _______________________________________________> Boost-users mailing list> Boost-users(a)lists.boost.org> http://lists.boost.org/mailman/listinfo.cgi/boost-users _________________________________________________________________ Besoin d'un e-mail ? Créez gratuitement un compte Windows Live Hotmail et gagnez du temps avec l'interface à la Outlook ! http://www.windowslive.fr/hotmail/default.asp

2 1

Weird compile error on VS .NET 2003 with boost::property
by gast128 11 Jul '07

11 Jul '07

Dear all, we upgraded yesterday to boost 1.34 but now ran in a weird compile error on vstudio 2003 (sp1) when using boost properties (or indirect through use of graph) and an enumerate enlosed by a namespace. E.g.: namespace Bla { struct Dummy {}; enum Foo { eFoo }; } void Example3() { boost::property<int, Bla::Dummy> prop1; //ok boost::property<int, Bla::Foo> prop2; //error } It gives something like: error C2065: 'Foo' : undeclared identifier. It chokes on the line: template <class Tag, class T, class Base = no_property> struct property : public Base { ... #if BOOST_WORKAROUND (__GNUC__, < 3) property() { } #else property() : m_value() { } <---- #endif Anyone an idea? Wkr, me

1 0

problem message bis new
by question boost 11 Jul '07

11 Jul '07

Hi, I repeat: the version of Boost is not the solution of the problem message. What must I do now after the run of build.bat and the set of the two main variables? Thank You _________________________________________________________________ Windows Live Messenger vous offre 30 nouvelles émoticônes gratuites, installées directement dans votre Messenger ! http://www.emoticones-messenger.fr/

2 1

the thread safe boost serialization library is thread safe?
by Fei Liu 11 Jul '07

11 Jul '07

I am testing a multi-thread app which uses boost serialization library..I got the dreaded error: *** glibc detected *** double free or corruption (fasttop): 0x0aed93d0 *** Aborted Using a core dump and gdb, here is a backtrace. It appears it crashed inside the multi-thread library. Any advice is appreciated.. #0 0xb7f9a6be in boost::serialization::extended_type_info::type_info_key_cmp () from /usr/lib/libboost_serialization-gcc34-mt-1_34.so.1.34.0 (gdb) bt #0 0xb7f9a6be in boost::serialization::extended_type_info::type_info_key_cmp () from /usr/lib/libboost_serialization-gcc34-mt-1_34.so.1.34.0 #1 0xb7f9a6f2 in boost::serialization::extended_type_info::operator< () from /usr/lib/libboost_serialization-gcc34-mt-1_34.so.1.34.0 #2 0xb7f9b43e in std::_Rb_tree<boost::serialization::extended_type_info const*, boost::serialization::extended_type_info const*, std::_Identity<boost::serialization::extended_type_info const*>, boost::serialization::detail::tkmap::type_info_compare, std::allocator<boost::serialization::extended_type_info const*> >::insert_unique () from /usr/lib/libboost_serialization-gcc34-mt-1_34.so.1.34.0 #3 0xb7f9adfb in boost::serialization::extended_type_info::self_register () from /usr/lib/libboost_serialization-gcc34-mt-1_34.so.1.34.0 #4 0x08053c23 in boost::archive::detail::iserializer<boost::archive::xml_iarchive, std::map<std::string, std::string, std::less<std::string>, std::allocator<std::pair<std::string const, std::string> > > >::load_object_data (this=0x805ba7c, ar=@0x933f71e0, x=0x933f73a8, file_version=2470408016) at extended_type_info_typeid.hpp:77 #5 0xb7f91900 in boost::archive::detail::basic_iarchive::load_object () from /usr/lib/libboost_serialization-gcc34-mt-1_34.so.1.34.0 #6 0x080537a7 in boost::archive::detail::iserializer<boost::archive::xml_iarchive, ns::ge::rule>::load_object_data (this=0x805ba60, ar=@0x933f71e0, x=0x933f73a8, file_version=4) at iserializer.hpp:143 #7 0xb7f91900 in boost::archive::detail::basic_iarchive::load_object () from /usr/lib/libboost_serialization-gcc34-mt-1_34.so.1.34.0 #8 0x08052c82 in utils::xml::deserialize<ns::ge::rule> (s=@0x4, is=@0xb7fb7f1e) at iserializer.hpp:143 #9 0x08052f41 in ns::ge::rules<ns::ge::rule>::process_xml (this=0x805b9a0, xml=@0x933f7410) at ns_ge_rules.h:54 #10 0x08053353 in ns::ge::rule_server<ns::ge::rules<ns::ge::rule>, pthread::thread_pool> (arg=0xb7fb7f1e) at ns_ge_rule_listener.h:47 #11 0xb7bb73b0 in start_thread () from /lib/tls/libpthread.so.0 #12 0xb79f426e in clone () from /lib/tls/libc.so.6

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Re: [Boost-users] [wave] compling error - error C2001: newline inconstant
by Hartmut Kaiser 10 Jul '07

10 Jul '07

Hi, > I　have been using boost wave library without much problems so > far. But recently when I was trying to compile our program > with UNICODE mode using > VC++ 2005 Express, I got this compile error: > > c:\users\tools\boost\boost_1_34_0\boost\wave\util\cpp_macromap .hpp(683) : > error C2001: newline in constant > > It complains about the following lines: > > argument->push_back(token_type(T_PLACEMARKER, "?, [snip] > It was strange to me that without setting to UNICODE mode, I > did not have this problem. This has been fixed in Boost::CVS head already. Please replace the "$" by a "\xA7". > Another interesting thing is that if I added the closing > double quate " and changed the line as to below, the compile > error went away: > > argument->push_back(token_type(T_PLACEMARKER, "?", Don't do that. Wave is relying on a specific character there. > But I am not sure if I am doing right thing and not sure if > the wave developer really missed closing double quate. The double quote has been eaten by your unicode editor. HTH Regards Hartmut

1 0

intrusive_ptr and NULL value
by Pavel Syomin 10 Jul '07

10 Jul '07

Hi, guys! I found embarrassing difference between shared_ptr::operator*() and intrusive_ptr::operator*() behavior (even the same I can say about operator ->). At first, look on shared_ptr: reference operator* () const // never throws { BOOST_ASSERT(px != 0); return *px; } If shared_ptr object has NULL value and someone call operator*(), it will throws exception. But if we look on intrusive_ptr(): T & operator*() const { return *p_; } we can see, that pointer don't checks.... Is it an imperfection or a feature?

2 3

feature for multidimensional binary tree
by valentin julien 10 Jul '07

10 Jul '07

I have heard about your library from a friend and badly i haven't found some kind of template binary tree implementation... What i'm working on is a multi dimensional binary tree to make Quadtrees Octrees or more.... And I want to make genericity to put several types of object in the same Leaf of my tree... I think this idea sounds like a cool stuff ...Is there laready any structure in Boost that can be use like it ? Or What do you think of this feature? ************************************************************************************ This footnote confirms that this email message has been scanned by PineApp Mail-SeCure for the presence of malicious code, vandals & computer viruses. ************************************************************************************

3 5

Re: [Boost-users] boost library for SQL
by Ovanes Markarian 10 Jul '07

10 Jul '07

On Tue, July 10, 2007 08:04, Meryl Silverburgh wrote: > Hi, > > Does boost library has library in c++ for SQL? If not, does anyone know if there is a c++ library for sql? > > Thank you. > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users > Please take a look at SOCI at http://soci.sourceforge.net/ This is a really great lib! With Kind Regards, Ovanes Markarian

3 3

boost library for SQL
by Meryl Silverburgh 10 Jul '07

10 Jul '07

Hi, Does boost library has library in c++ for SQL? If not, does anyone know if there is a c++ library for sql? Thank you.

3 2

[serialization] hacking serialization : handles to pointers
by Sean Cavanaugh 10 Jul '07

10 Jul '07

Ok I've spent a good chunk of my day making a set of custom archive class, based on the portable_binary_iarchive and portable_binary_oarchive. I have a non-virtual class hierarchy named Asset, in memory this is a cyclic graph, but my requirements are that this structure cannot be serialized all at once, it has to be broken up at boundaries. So the archiver serializes the first Asset* (which is always the root object passed into operator&). This object serializes as normally as per the boost serialization code, except except that when subsequent Asset*'s are encountered I send the pointer into an AssetManager class and translate the Asset* into a ResourceID, and serialize the ResourceID instead of the object. This is done by directly calling operator& inside save_override. So far all of this works: The reverse case of loading, by hooking load_override almost works. Almost, because I have to apply a hack of skipping 4 bytes inside load_override, before trying to read the ResourceID structure with operator&. I can't figure out how to make it 'proper', without simply hard coding the 4 byte read. As far as I can tell before save_override some bookkeeping information is written, but the reverse operation in load_override has not yet stripped this bookkeeping information from the stream, so these functions aren't quite mirror operations. As best as I can tell the function guilty of reading the bookkeeping information is load_pointer. What I need is another function in the boost archive API that pulls the bookkeeping information out of the stream safely, that I can call from within load_override, since I have no intention of calling load_pointer through any means. Aside from the hack, it technically works, but even then I still have a few aching problems: I also have to hard-code the full list of derived Asset types and manually provide specializations for all of them in save_override and load_override. If I use the base class, I end up slicing my class down to its base, and cannot serialize it. I can't make serialize virtual, since the intrusive serialize methods are templates, but it certainly would solve the problem if it were possible. In addition the bodies of all of my overrides are completely identical except for the classname (AssetModel, AssetTexture, etc). Which means I'll be wrapping the bodies of a generic save_override and load_override in a macro, and have to manually add all Asset derived classes to a list of classes inside my archive class. Which means that my archiver cannot be generic, even though I have managed to make it a template in the sense that the passed in asset manager and base asset types are template parameters. the type ResourceID is a std::string saving... class asset_oarchive : ... void save_override(const AssetModel& t, int i) { if (!RootAssetSaved) { RootAssetSaved = true; binary_oarchive_impl::save_override(t, i); } else { AssetManagerType::ResourceID ResourceId = TheAssetManager->ResourceIdForAsset(&t); operator&(ResourceId); } } loading ... class asset_iarchive : ... void load_override(AssetModel*& t, int i) { if (!RootAssetLoaded) { RootAssetLoaded = true; binary_iarchive_impl::load_override(t, i); } else { unsigned char c[10]; for (INT x=0; x<10; ++x) { c[x] = 0xFF; } for (INT x=0; x<4; ++x) { operator&(c[x]); //hackhack } AssetManagerType::ResourceID ResourceId; operator&(ResourceId); AssetType* a = TheAssetManager->FindAsset(ResourceId); if (!a) { a = TheAssetManager->LoadAsset(ResourceId); } // TODO: throw on missing resources, potentially query asset manager for substitutes t = static_cast<AssetModel*>(a); } } So I have a working implementation, how do I make it better?

2 2

Re: [Boost-users] wrapping stdlib fstream with boost filtering streams
by Daniel Oberhoff 10 Jul '07

10 Jul '07

Hi, egoots <egoots(a)gmail.com> writes: >> 1) does the compressor flush the zlib compression buffer when I flush/ >> pop it? > > As I understand it, pop() and reset() both flush and close the current > device and then destroy it. Well, but I explicitly switched the auto_close feature off... >> 2) is fstream a bidirectional stream (my guess due to separate seekg/ >> seekp methods) or a seekable stream (one read/write head)? Because I >> currently require the former. >> >> btw: the above code runs without exceptions, but when I read back >> variables I have just written they are garbled. > > You should read the thread of messages at... there may be some relevant > info here: > http://thread.gmane.org/gmane.comp.lib.boost.user/13824 > > Especially the replies by Jonathan Turkanis Well, there he says that strict_sync is there to switch filters, but it wouldn't make sense to use it before all the data is compressed. but that is exactly the point: all the data IS compressed. Matlab files effectively consist of carefully concatenated compressed and uncompressed files. Effectively I could take out a compressed block from a matlab file and send it to gunzip. Also, in my code strict_sync returns true, unlike what the original poster in the mentioned thread has experienced, indicating that all has been flushed and written and switching filters is ok. I also check after every pop() if the fstream has been closed, and it has not. Using a different z stream wrapper (zipstream) works (mostly) and gives me the original data, while the boost approach gives me zeros. Well, I will try to make a simpler test case, since the program is quite complex. thanks 4 the reply Daniel

1 0

Re: [Boost-users] Réf. : Problem message bis
by question boost 10 Jul '07

10 Jul '07

> Now I do:> cd C:\Documents and Settings\Administrateur\Bureau\boost_1_33_1\boost_1_33_1\tools\build\jam_src> C:\Documents and Settings\Administrateur\Bureau\boost_1_33_1\boost_1_33_1\tools\build\jam_src\build.bat> Then I set the following variables:> BOOST_ROOT= C:\Documents and Settings\src\boost> and BOOST_BUILD_PATH=C:\Documents and Settings\Administrateur\Bureau\boost_1_33_1\boost_1_33_1\tools\build\v2. The problem is the same. I don't know what to do now in order not to get the message any more. Thank you for your response. > To: boost-users(a)lists.boost.org> Wrom: HAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZUNNYCGPKYLEJGDGVCJVTLBXFGGMEPYOQKEDOTWFAOBUZXUWLSZLKBRNVWWCUFPEGAUTFJMVRESKPNKMBIPBARHDMNNSKVFVWRKJVZCMHVIBGDADRZFSQHYUCDDJBLVLMHAALPTCXLYRWTQTIPWIGYOKSTTZRCLBDXRQBGJSNBOHMKHJYFMYXOEAIJJPHSCRTNHGSWZIDREXCAXZOWCONEUQZAAFXISHJEXXIMQZUIVOTQNQEMSFDULHPQQWOYIYZU _________________________________________________________________ David Guetta a réuni les sons les plus connus de Messenger dans le Mix Messenger, le son de l’été ! Téléchargez-le gratuitement ! http://specials.divertissements.fr.msn.com/mixmessenger

1 0

boost::lambda::bind - a better name?
by Maciek Godek 10 Jul '07

10 Jul '07

Wouldn't it be better if boost::lambda::bind was named boost::lambda::call (or boost::lambda::eval, to make it more lispish), in order to: -avoid the confusion and potential overlap with boost::bind -make the name more sensible within lambda expressions, especially when "binding" nullary functions, ie. int six() { return 6; } if_(call(six) == 6) [ ... ] IMHO looks better than if_(bind(six) == 6) [ ... ] Yours, Chuj

2 1

boost::lambda library, error with << operator (on g++ with SGI STL)
by Maciek Godek 10 Jul '07

10 Jul '07

Hi, I've tried to compile the following code on linux/g++ (version 3.3.4 and 4.1.2), boost version 1.34: -- CODE BEGINS -- #include <iostream> using namespace std; #include "boost/function.hpp" #include "boost/ref.hpp" using namespace boost; #include "boost/lambda/lambda.hpp" #include "boost/lambda/bind.hpp" #include "boost/lambda/if.hpp" using namespace boost::lambda; int main(int argc, char *argv[]) { function<void (int, int)> f = if_(_1 == _2) [ cout << cref("arguments are equal\n") ].else_[ cout << cref("arguments differ\n") ]; f(1, 1); f(1, 2); } -- CODE ENDS -- On g++ 3.3.4 I got a (scarcely readable) error that std::ios_base copy constructor is private (the more recent compiler gave much more trashy output, but I've infered that the reason is probably the same). The error wouldn't appear if I had supplied at least one placeholder to the operator<< in both if's cases in the lambda expression above. Is there any way to overcome this limitation?

2 1

Does boost offer a random permutation function?
by Jeffrey Holle 09 Jul '07

09 Jul '07

I am looking for a function that randomly selects a permutation of a sequence. For instance given "1,2,3", it would produce something like "2,1,3" randomly selected from all possible permutations. I could code this myself by creating a container with all possible permutations and randomly selecting one, but this isn't reasonably if the size of the sequence gets larger. I've looked on the web and found an old 4 line FORTRAN subroutine that appears to do this. If boost don't already have this, I will attempt to convert this to C++.

2 2

Test Library documentation URL errors
by Number Cruncher 09 Jul '07

09 Jul '07

I was trying to browse the Unit Test Framework (part of Boost Test Library) and received the following: An error has been encountered in accessing this page. 1. Server: boost.org 2. URL path: /libs/test/doc/components/utf/getting_started/index.html 3. Error notes: File does not exist: /home/groups/b/bo/boost/htdocs/libs/test/doc/components/utf/getting_started/index.html 4. Error type: 404 5. Request method: GET 6. Request query string: 7. Time: 2007-07-09 03:07:29 PDT (1183975649) Also, none of the example source code seems to be linked, e.g: http://boost.org/libs/test/example/unit_test_example1.cpp

2 1

[Boost.Python] Issues When Object Created in C++ and Then Used From Python
by Lawrence Spector 09 Jul '07

09 Jul '07

I created an example of code that demonstrates the error. Here's what the code looks like, as of right now: PythonPassReference.cpp: #include <boost/python.hpp> #include "TestClass.hpp" #include "TestClassWrap.hpp" #include <iostream> using namespace boost::python; int main() { try { Py_Initialize(); object main_module(( handle<>(borrowed(PyImport_AddModule("__main__"))))); object main_namespace = main_module.attr("__dict__"); TestClass testClass(std::cout, 3, 9.6f, 'Q'); { handle<> ignored((PyRun_String( "import PythonInterface" , Py_file_input , main_namespace.ptr() , main_namespace.ptr()) )); } TestClassWrap testClassWrapper(testClass); boost::python::object pyTestClass(testClassWrapper); // Works: pyTestClass.attr("output")(); { handle<> ignored((PyRun_String( // Works: "pyTestClass = PythonInterface.TestClass(6, 8.3, 'W')\n" "pyTestClass.output()\n" // Error unless the previous line is uncommented , Py_file_input , main_namespace.ptr() , main_namespace.ptr()) )); } } catch(boost::python::error_already_set& e) { std::cerr << "Caught error_already_set" << std::endl; if (PyErr_Occurred() != 0) { PyErr_Print(); } // end if } catch(...) { std::cerr << "Caught unknown error" << std::endl; } // end try-catch std::cin.get(); return 0; } // end main TestClass.hpp: #pragma once #include <iostream> class TestClass { private: std::ostream& m_outStream; int m_x; float m_y; char m_z; public: TestClass(std::ostream& p_outStream, int p_x, float p_y, char p_z) : m_outStream(p_outStream), m_x(p_x), m_y(p_y), m_z(p_z) { } // end TestClass ~TestClass() { } // end TestClass void output() { m_outStream << "x = " << m_x << ", y = " << m_y << ", z = " << m_z << "\n"; } // end callMethod }; // end TestClass TestClassWrap.hpp: #pragma once #include "TestClass.hpp" class TestClassWrap { private: TestClass m_testClass; public: TestClassWrap(const TestClass& p_testClass) : m_testClass(p_testClass) { } // end TestClassWrap TestClassWrap(int p_x, float p_y, char p_z) : m_testClass(std::cout, p_x, p_y, p_z) { } // end TestClass ~TestClassWrap() { } // end TestClass void output() { m_testClass.output(); } // end callMethod }; // end TestClassWrap PythonInterface.cpp (Built with BJam, makes PythonInterface.pyd, PythonInterface.lib): #include <string> #include <boost/python.hpp> #include <iostream> #include "TestClass.hpp" #include "TestClassWrap.hpp" using namespace boost::python; BOOST_PYTHON_MODULE(PythonInterface) { class_<TestClassWrap>("TestClass", init<int, float, char>()) .def("output", &TestClassWrap::output) ; } // end module As you can see in the example above, I have an object which I wrap and then pass to python as follows: TestClassWrap testClassWrapper(testClass); boost::python::object pyTestClass(testClassWrapper); This works just fine, and I can call methods on the object. However, when I try to run it as a string (as it would be if read from a .py script file), I get an error. Here's the code for that: { handle<> ignored((PyRun_String( "pyTestClass.output()\n" // Error unless the previous line is uncommented , Py_file_input , main_namespace.ptr() , main_namespace.ptr()) )); } Which produces the following error (based on my catching and outputting the error): Caught error_already_set Traceback (most recent call last): File "<string>", line 1, in <module> NameError: name 'pyTestClass' is not defined So, I guess the question is, how do I expose an instance called pyTestClass, in such a way, that I can call methods on it from a script? Or is there some mistake I'm making, that's preventing this from fully working? Thanks in advance, Lawrence

2 1

[program options] making options lower case???
by Ovanes Markarian 09 Jul '07

09 Jul '07

Hello! is there any chance to make some specific option values being lower case? With Kind Regards, Ovanes

1 0

Problem message bis
by question boost 09 Jul '07

09 Jul '07

Hi, using Code Blocks i got the following message: ld.exe "Cannot find -lboost_filesystem-mgw-mt-s-l_33_l" Then I do: cd C:\Documents and Settings\Administrateur\Bureau\boost_1_34_0\boost_1_34_0\tools\jam\src then C:\Documents and Settings\Administrateur\Bureau\boost_1_34_0\boost_1_34_0\tools\jam\src\build.bat Then I set the following variables: BOOST_ROOT= C:\Documents and Settings\src\boost and BOOST_BUILD_PATH=C:\Documents and Settings\src\boost\tools\build\v2. I don't know what to do now. It's a question like the other questions, so thank you for your response. _________________________________________________________________ David Guetta a réuni les sons les plus connus de Messenger dans le Mix Messenger, le son de l’été ! Téléchargez-le gratuitement ! http://specials.divertissements.fr.msn.com/mixmessenger

2 1

Réf. : [boost] Réf. : Re: [filesystem] building for cygwin
by frederic.bron＠alcan.com 09 Jul '07

09 Jul '07

Finally, I had a close look inside filesystem files and I discovered that to compile for cygwin 2 flags must be set: BOOST_POSIX_API and BOOST_POSIX_PATH! If only BOOST_POSIX_API, BOOST_WINDOWS_PATH is set automatically. Why??? This is a strange behaviour. Then: - either change the doc and add that for cygwin compilation, BOOST_POSIX_PATH must be set as BOOST_POSIX_API, - or change filesystem/config.hpp so that BOOST_POSIX_PATH is automatically set when BOOST_POSIX_API is set (I would prefer this solution). Regards, F. Bron frederic.bron@alca n.com Pour : boost(a)lists.boost.org Envoyé par : cc : (ccc : Frederic Bron/Alcan) boost-bounces@list Objet : [boost] Réf. : Re: [filesystem] building for cygwin s.boost.org 08/07/2007 19:32 Veuillez répondre à boost My problem is that I compiled 1.34.0 with -DBOOST_POSIX_API and it did not produce what it was suppose to produce, i.e. posix paths. F. Bron Lewis Hyatt <lhyatt@princeton. Pour : boost(a)lists.boost.org edu> cc : (ccc : Frederic Bron/Alcan) Envoyé par : Objet : Re: [boost] [filesystem] building for cygwin boost-bounces@list s.boost.org 08/07/2007 18:34 Veuillez répondre à boost I know it's possible because the cygwin package maintainer for boost re-compiled the boost 1.33.1 package for me a while ago to include -DBOOST_POSIX_API, to get the expected behavior on cygwin. If you post this to the cygwin mailing list (you can get at http://news.gmane.org/gmane.os.cygwin/ if you don't want to subscribe to the mailing list), I'm sure he can help you out. -Lewis frederic.bron(a)alcan.com wrote: > Maybe the developpers list can help? I try to have the POSIX behaviour under cygwin but get only the windows behaviour even if I compile the library and program with -DBOOST_POSIX_API. > What should I do? > > Regards > > F. Bron > > > frederic.bron(a)alcan.com > Envoyé par : Pour : boost-users(a)lists.boost.org > boost-users-bounces@list cc : (ccc : Frederic Bron/Alcan) > s.boost.org Objet : [Boost-users] Réf. : [filesystem] building for cygwin > > > 07/07/2007 15:13 > Veuillez répondre à > boost-users > > > > > > > > Unbelievable! It does not work anymore!!! I have rebuild again the library to be sure that g++ received well -DBOOST_POSIX_API and it does. > However, here is the output of the small program printed below: > > $ g++ -DBOOST_POSIX_API -I/cygdrive/d/Softs/boost_cyg/include -o toto toto.cc /cygdrive/d/Softs/boost_cyg/lib/libboost_filesystem.a > $ ./toto > ..\toto\x.xml > \cygdrive\d\toto\x.xml > > should be > ../toto/x.xml > /cygdrive/d/toto/x.xml > > What should I do? > > F. Bron > > #include <iostream> > #include <boost/filesystem.hpp> > > namespace fs=boost::filesystem ; > > int main() { > fs::path x("../toto/x.xml") ; > std::cout << x.file_string() << std::endl ; > fs::path y("/cygdrive/d/toto/x.xml") ; > std::cout << y.file_string() << std::endl ; > return 0 ; > } > > Avis : > Ce message et toute pièce jointe sont la propriété d'Alcan et sont destinés seulement aux personnes ou à l'entité à qui le message est adressé. Si vous avez reçu ce message par erreur, veuillez le > détruire et en aviser l'expéditeur par courriel. Si vous n'êtes pas le destinataire du message, vous n'êtes pas autorisé à utiliser, à copier ou à divulguer le contenu du message ou ses pièces jointes > en tout ou en partie. > > Notice: > This message and any attachments are the property of Alcan and are intended solely for the named recipients or entity to whom this message is addressed. If you have received this message in error > please inform the sender via e-mail and destroy the message. If you are not the intended recipient you are not allowed to use, copy or disclose the contents or attachments in whole or in part. > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users > > _______________________________________________ > Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost > _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost

1 0

Problem message
by question boost 09 Jul '07

09 Jul '07

Hi, using Code Blocks i got the following message: ld.exe "Cannot find -lboost_filesystem-mgw-mt-s-l_33_l" Then: cd C:\Documents and Settings\Administrateur\Bureau\boost_1_34_0\boost_1_34_0\tools\jam\src then.\\build.bat. Then I set the following variables: BOOST_ROOT= C:\Documents and Settings\src\boost and BOOST_BUILD_PATH=C:\Documents and Settings\src\boost\tools\build\v2. I don't know what to do now. So what must I do now in order not to get the message any more? Be clear. Thank You _________________________________________________________________ Le blog Messenger de Michel, candidat de la Nouvelle Star : analyse, news, coulisses… A découvrir ! http://michel-nouvelle-star2007.spaces.live.com/

1 0

[mpi] shared_ptr + packed_iarchive
by Andras Joo 09 Jul '07

09 Jul '07

Dear All, I'm facing the following problem. I have the following class hierarchy: AbstractBase <--- AbstractDerived <---- ConcreteDerived I managed to make the serialization of shared_ptr<AbstractBase> using text and binary archives (text_[i/o]archive, binary_[i/o]archive), tested, and works fine. However, when I try to send an shared_ptr<AbstractBase> with some MPI function, the compiler complains about packed_iarchive not having append() and reset() functions. /home/jooam/usr/include/boost-1_35/boost/serialization/shared_ptr.hpp:129: error: 'class boost::mpi::packed_iarchive' has no member named 'append' /home/jooam/usr/include/boost-1_35/boost/serialization/shared_ptr.hpp:137: error: 'class boost::mpi::packed_iarchive' has no member named 'reset' Any help is appreciated. Thank you, Andras ____________________________________________________________________________________ Park yourself in front of a world of choices in alternative vehicles. Visit the Yahoo! Auto Green Center. http://autos.yahoo.com/green_center/

3 3

Can't compile my project with Boost 1.3.3.1 & stlport
by Hongquan 09 Jul '07

09 Jul '07

Hi Everyone: I use boost 1.3.3.1 and stlport in my project,actually Boost::regex is my need. If I compile my project without include boost files in project settings,it's ok and of course cl told me that it can't find some header files such as regex.hpp . But if I add boost path into my project settings,the compiler will threw some erro just like below: BoostRegHandler.cpp D:\SyncSdk\include/stlport\cstddef(35) : fatal error C1001: INTERNAL COMPILER ERROR (compiler file 'msc1.cpp', line 1794) Please choose the Technical Support command on the Visual C++ Help menu, or open the Technical Support help file for more information Error executing cl.exe. I have no idea on this,does anyone compile your project with boost & stlport successfully? Or is there any seetings error of my project. BTW:I use vc6.0 , XP proffessional ,Intel P4 2.0 512 RAM Hongquan

1 0

[serialization] minor comment error
by Sean Cavanaugh 09 Jul '07

09 Jul '07

In basic_binary_oarchive.hpp there exists a comment which is obviously the result of an uncorrected cut-and-paste (it looks like the comment just needs to be deleted) ///////////////////////////////////////////////////////////////////////// // class basic_text_iarchive - read serialized objects from a input text stream template<class Archive> class basic_binary_oarchive : public detail::common_oarchive<Archive>

1 0

Re: [Boost-users] [serialization] hacking serialization : handles to pointers
by Sean Cavanaugh 08 Jul '07

08 Jul '07

On 7/8/07, Robert Ramey <ramey(a)rrsd.com> wrote: > > Sean Cavanaugh wrote: > > Ok I've spent a good chunk of my day making a set of custom archive > > class, based on the portable_binary_iarchive and > > portable_binary_oarchive. > > > > > > I have a non-virtual class hierarchy named Asset, in memory this is a > > cyclic graph, but my requirements are that this structure cannot be > > serialized all at once, it has to be broken up at boundaries. So > > the archiver serializes the first Asset* (which is always the root > > object passed into operator&). This object serializes as normally as > > per the boost serialization code, except except that when subsequent > > Asset*'s are encountered > > > > ?which point to a previously serialized object? or any subsequent > > Asset *? > > > > I send the pointer into an AssetManager class and translate the > > Asset* into a ResourceID, and serialize the ResourceID instead of the > > object. This is done by directly calling operator& inside > > save_override. > > > ******* > Hmmm this sounds to me exactly equivalent to what the serialization > system does by default for tracked objects. Objects serialized > through pointers are tracked by default. Your "ResourceID" seems a > re-implemenation of the "object id" used by the serialization libary > to track This is true, but the serialization libraries view of the id's only have archive scope, which means the same id's are used for totally different things when you use multiple archives. My ResourceID's have to be globally unique, in the sense they are GUIDs or relative pathnames, which can then be mapped to a fully qualified pathname and can be loaded on demand. As far as the archive class is concerned its a user defined translation (proxy-to-real and real-to-proxy) that exists for certain types. So in this case its conceptually an archive of archives. With the outermost archive being the filesystem, and the innermost being a single object (a file). The file only contains one object, and all links to other objects are handles (a filename). So the innermost code when it is loading from the filesystem, it knows that it wants a pointer to another object, but it only has its name. So it has to ask the filesystem class to translate the name into an object, which it can do because it can lookup if its already loaded and return that, or literally open another file based archive and read it in on demand, and return that. The archive class doesn't care about the specifics really, it just needs the means to achieve the result. So the archive's base class code should be doing this in a conceptual way: for_each type X, if has_user_defined_translation<X*> implement : on_save -> translate type X* to type ProxyX via a function : ProxyX RealToProxy(X* x), serialize the ProxyX on_load -> read ProxyX translate to X*, via a function : X* ProxyToReal(ProxyX& px), return the X* Except that this on_save and on_load example needs to have yet another template argument, on whether the first occurence of X should be literally saved or not, since we might be saving a hierarchy of Bar's that always save handles to Foo's at all times. > > > ... > > > > I also have to hard-code the full list of derived Asset types and > > manually provide specializations for all of them in save_override and > > load_override. > > > **** > Well, since they're different - I would expect each of them to have a > different serialize function. If all the serialize functions are the > same, it would seem that something should be moved from the derived > class to the base class. > > > > If I use the base class, I end up slicing my class down to its base, > > and cannot serialize it. > > > **** > serializing through a base class pointer solves this problem as well. In my currently kind-of-working hacked up version of the archive classes the methods load_override are nearly identical when specializing for AssetModel, AssetTexture, etc. The behavior is constant (proxy-to-real translation or vice-versa) but the type is not. I can slice them here safely on saving, but not on loading (since the C++ code in the serialize method 'ar & foo', is expecting a more-derived type to be filled in). > I can't make serialize virtual, since the intrusive serialize methods > > are templates, but it certainly would solve the problem if it were > > possible. > > *** > I suspect that if the other changes suggested were implemented this > would disappear as a problem. I don't think I've tried it, but > rather than including boiler plate code in each derived class, one > might try adding a "mix-in" base class which contains the serialize > function. I'll play around with alternatives, I basically spent the day learning the archive templates by watching the code flow. > > > In addition the bodies of all of my overrides are completely > > identical except for the classname (AssetModel, AssetTexture, etc). > > > > Which means I'll be wrapping the bodies of a generic save_override > > and load_override in a macro, and have to manually add all Asset > > derived classes to a list of classes inside my archive class. Which > > means that my archiver cannot be generic, even though I have managed > > to make it a template in the sense that the passed in asset manager > > and base asset types are template parameters. > > > *** > looks to me that you've gotten off on the wrong foot and stuck with it. That isn't possible with learning new code :) This is what the path of least resistance yielded, with the docs and examples provided by boost. Basically this is as far as I got without having to directly hack on the existing boost code, and having to deal with a crash course on the code flow and internal data structure of everything. > > > *** me this is exactly the wrong approach. Now you've coupled your > classes > to be serialized to a specific archive. This means you won't be able to > use > any other archive type and you've defeated one of the main benefits to the > serialization library. Perhaps it wasn't a suitable library for your > task. The library can do what I want, because I have the source code :) Anyway the classes aren't coupled to the archive with what I've come up with so far, its the other way around. I definitely do not want my classes to understand archiving beyond a very basic sense of having to call operator& on most of their fields, since I plan on having several wildly different archive classes calling the serialize methods on my classes. So I have a working implementation, how do I make it better? > > **** > Maybe you might try doing it in the simplest way. > > I can't see how what you want to do is different than what everyone else > uses the library for. And I can't see how what you want to do is > different > than what the examples do. > > I could get the behavior I want by altering the serialize methods, but then it would be ill formed for other archives. I could also template specialize the serialize methods for the archive in question, but then I would have to write more than one. Its the archives job to interpret what to do when you call ar & foo. I anticipate having more data than I can load, so I need to load and save at an object level. But I still need to write the serialize methods as if they all could fit in memory, since I plan on having other archive classes that do operate on the graph of what is loaded at runtime (i.e. to compute garbage collection). In essence the archive classes need to be made to be programmable for these behaviors to work: Graph of Foo: Saving: save the first Foo*, translate all further Foo*'s into a user defined handle with a user defined function and save that instead. Loading: load the first Foo*, assume all further Foo*'s are saved with a user defined handle, translate them back into live objects on demand, and also use the existing caching scheme to prevent having to translate the same user-defined handle over and over. Graph of Bar: Saving: save all Bar's, but save all occurences of Foo*'s as handles Loading: save all Bar's, but load all occurences of Foo*'s from handles Garbage Collecting Foo: 'Saving' : archive an array of live root level Foo objects, build a list of all Foo* that are reachable through serialization. Compare this list to the full list of Foo objects, and unload the ones that are missing.

1 0

How to use boost iostream with zlib
by Meryl Silverburgh 08 Jul '07

08 Jul '07

Hi, Can you please tell me how can I use boost iostream with zlib to inflate an byte stream? Where can I find an example? Thank you.

4 12

non-boost: project idea help. Java expert apperciated.
by chun ping wang 08 Jul '07

08 Jul '07

Dear boost community. Right now I am planning on doing somewhat of a mock boost for java. http://cs.calstatela.edu/wiki/index.php/Current_MS_Students/Chun_ping_Wang. I am not going to use the name boost but i want to know a.) a good name for it. b.) five common non-ui files you think Java needs that it is missing. All implementation can be done using low level arrays and iterators (if needed). Thanks

1 0

[boost.python] How to get derived class from base class in Python?
by Marcin Kalicinski 08 Jul '07

08 Jul '07

This may potentially be unrelated to Boost.Python, but how to do an equivalent of C++ dynamic_cast in Python, having all the classes wrapped using boost.python? See below: // All the components inherit from Component class Component { }; class ComponentA: public Component { }; class ComponentB: public Component { }; // Find a component by name Component *FindComponent(const char *name); // In C++ result of FindComponent may be dynamic_casted to appropriate type: void f() { Component *c = FindComponent("a"); ComponentA *a = dynamic_cast<ComponentA *>(c); } How to do this in Python (all Component classes are wrapped)? def f(): c = FindComponent("a") # Unforunately Python sees c as an instance of Component, not as ComponentA which it really is a = ??? Thanks, Marcin

1 1

Re: [Boost-users] [Serialization] link errors serializing user types via pointer
by Sean Cavanaugh 08 Jul '07

08 Jul '07

Ok well in trying to get the serialization library working on my environment, I am having trouble loading user types via pointer. I've simplifed the class in question down to a struct containing PODs. Changing the trivial example to save and load via a local stack variable (i.e. ar & pass-by-reference) does work, however the real program I am trying to save a graph of structures foo with pointers to bar, I'm back to the original link error when trying to load the graph back, even when the root type passed into serialize is a reference type. My environment is WinXP w/ msvc8sp1 (aka visual studio 2005 sp1), and boost 1.34 pseudoprogram: #include <iostream> #include <fstream> #include "boost/serialization/access.hpp" #include "boost/archive/text_iarchive.hpp" #include "boost/archive/text_oarchive.hpp" struct MyVector3 { float X; float Y; float Z; MyVector3() {} MyVector3(float x, float y, float z) : X(x), Y(y), Z(z) {} }; template<class Archive> void serialize(Archive & ar, MyVector3& v, const unsigned int version) { ar & v.X; ar & v.Y; ar & v.Z; } int main(int argc, const char** argv) { // Saving via pointer works --- std::string filename("TestVector.raw"); MyVector3* WriteVector = new MyVector3(1.1f, 2.2f, 3.3f); std::ofstream ofs(filename.c_str()); boost::archive::text_oarchive oa(ofs); oa & WriteVector; ofs.close(); // Loading via pointer does not --- MyVector3* ReadVector = NULL; std::ifstream ifs(filename.c_str()); boost::archive::text_iarchive ia(ifs); ia & ReadVector; // <--- commenting this line out makes the link error go away, but then you can't load anything ifs.close(); } Link error is error LNK2019: unresolved external symbol "public: class boost::archive::detail::basic_pointer_iserializer const * __thiscall boost::archive::detail::basic_iarchive::load_pointer(void * &,class boost::archive::detail::basic_pointer_iserializer const *,class boost::archive::detail::basic_pointer_iserializer const * (__fastcall*)(class boost::serialization::extended_type_info const &))" (?load_pointer@ basic_iarchive@detail@archive@boost@@ QAEPBVbasic_pointer_iserializer@234@AAPAXPBV5234@P6IPBV5234@ ABVextended_type_info@serialization@4@@Z@Z) referenced in function "public: static void __fastcall boost::archive::detail::load_pointer_type<class boost::archive::text_iarchive,struct MyVector3 *>::invoke(class boost::archive::text_iarchive &,struct MyVector3 * &)" (?invoke@?$load_pointer_type@ Vtext_iarchive@archive@boost@@PAUMyVector3@@@ detail@archive@boost@@SIXAAVtext_iarchive@34@AAPAUMyVector3@@@Z) error LNK2019: unresolved external symbol "public: static class boost::archive::detail::basic_pointer_iserializer const * __fastcall boost::archive::detail::archive_pointer_iserializer<class boost::archive::text_iarchive>::find(class boost::serialization::extended_type_info const &)" (?find@?$archive_pointer_iserializer@ Vtext_iarchive@archive@boost@@@ detail@archive@boost@@SIPBVbasic_pointer_iserializer@234@ ABVextended_type_info@serialization@4@@Z) referenced in function "public: static void __fastcall boost::archive::detail::load_pointer_type<class boost::archive::text_iarchive,struct MyVector3 *>::invoke(class boost::archive::text_iarchive &,struct MyVector3 * &)" (?invoke@?$load_pointer_type@ Vtext_iarchive@archive@boost@@PAUMyVector3@@@ detail@archive@boost@@SIXAAVtext_iarchive@34@AAPAUMyVector3@@@Z) error LNK2019: unresolved external symbol "void const * __fastcall boost::serialization::void_upcast(class boost::serialization::extended_type_info const &,class boost::serialization::extended_type_info const &,void const * const,bool)" (?void_upcast@ serialization@boost@@YIPBXABVextended_type_info@12@0QBX_N@Z) referenced in function "void * __fastcall boost::serialization::void_upcast(class boost::serialization::extended_type_info const &,class boost::serialization::extended_type_info const &,void * const)" (?void_upcast@ serialization@boost@@YIPAXABVextended_type_info@12@0QAX@Z)

1 1

Grabbing web page content
by Scott Meyers 07 Jul '07

07 Jul '07

I'm looking for an easy way to grab the contents of a web page, i.e., something like this (ignoring error handling): std::string pageContent = getPageContent("http://www.interestingsite.com/funkypage.html"); Is there a Boost library that will give me this kind of interface? I know I can build this on top of asio, but I'd prefer something where I don't have to do much more work than the above. If there's no Boost library, I'd welcome suggestions for other cross-platform ways to achieve this. Thanks, Scott

5 4

Re: [Boost-users] Grabbing web page content
by Chad Walters 07 Jul '07

07 Jul '07

>> If there's no Boost library, I'd welcome >> suggestions for other cross-platform ways to achieve this. > > Most Un*x systems have libcurl, which will do this. > I don't know about Windows, but this looks promising > <http://sourceforge.net/projects/curl/> See http://curl.haxx.se/libcurl/ Lots of *nix flavors and Windows are supported. There is also a pointer to curlpp, which provides OO C++ bindings: rrette.com/textpattern/index.php?s=cURLpp Chad Walters

1 0

[filesystem] building for cygwin
by frederic.bron＠alcan.com 07 Jul '07

07 Jul '07

In the documentation, it is written what follows for compiling with cygwin. Basically set BOOST_POSIX_API when building for cygwin and BOOST_WINDOWS_API when building for windows (i.e. -mno-cygwin). My question is: how to set BOOST_POSIX_API in user-config.jam? I have tried <define>BOOST_POSIX_API but it did not work. I have tried <cflags>-DBOOST_POSIX_API <cxxflags>-DBOOST_POSIX_API... and the -DBOOST_POSIX_API is given to g++ but I still have the windows behaviour. For example cout << boost::filesystem::path("/cygdrive/c/toto").file_string() ; gives \cygdrive\c\toto. Can you help to get the POSIX behaviour when compiling without "-mno-cygwin"? Regards, F. Bron The library's implementation code automatically detects the current platform, and compiles the POSIX or Windows implementation code accordingly. Automatic platform detection during object library compilation can be overridden by defining either BOOST_POSIX_API or BOOST_WINDOWS_API macros. With the exception of the Cygwin environment, there is usually no reason to define these macros, as the software development kits supplied with most compilers only support a single platform. The Cygwin package of tools supports traditional Windows usage, but also provides an emulation layer and other tools which can be used to make Windows act as Linux (and thus POSIX), and provide the Linux look-and-feel. GCC is usually the compiler of choice in this environment, as it can be installed via the Cygwin install process. Other compilers can also use the Cygwin emulation of POSIX, at least in theory. Those wishing to use the Cygwin POSIX emulation layer should define the BOOST_POSIX_API macro when compiling bother user programs and the Boost.Filesystem's object-library. Avis : Ce message et toute pièce jointe sont la propriété d'Alcan et sont destinés seulement aux personnes ou à l'entité à qui le message est adressé. Si vous avez reçu ce message par erreur, veuillez le détruire et en aviser l'expéditeur par courriel. Si vous n'êtes pas le destinataire du message, vous n'êtes pas autorisé à utiliser, à copier ou à divulguer le contenu du message ou ses pièces jointes en tout ou en partie. Notice: This message and any attachments are the property of Alcan and are intended solely for the named recipients or entity to whom this message is addressed. If you have received this message in error please inform the sender via e-mail and destroy the message. If you are not the intended recipient you are not allowed to use, copy or disclose the contents or attachments in whole or in part.

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[Boost.Graph] Property map of a bundled property
by Ewgenij Sokolovski 07 Jul '07

07 Jul '07

Hello, I want to apply dijkstra_shortest_paths to my Graph. I have added the lengths of the edges with while adding the edges with the function add_edge(vi, vj, distance, *nodesGraph) where vi, vj are the vertex descriptors, distance is the length of the edge and nodesGraph is a pointer to my graph. Now I need to provide an appropriate property map for the bundled property "distance". In the manual I read that I have to provide a member pointer to the property value: file:///usr/share/doc/packages/boost-doc/libs/graph/doc/bundles.html But in my case I do not have a class with members like 'Highway' in the manual. In my case the bundled property is represented by a single float value. And so I need access to it, not to some members of it. I tried to write weight_map(get(&float, myGraph)) instead of weight_map(get(&Highway::miles, map)) in the example, but then I get a compiler message "expected primary expression before "," token". So how can I access the distance? Or comes the compiler message due to some other bug in my code? Ewgenij -- Psssst! Schon vom neuen GMX MultiMessenger gehört? Der kanns mit allen: http://www.gmx.net/de/go/multimessenger

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[serialization] DLL woes
by Anders Wang Kristensen 07 Jul '07

07 Jul '07

Hi, I'm trying to serialize a class using two functions located in different DLLs. I can serialize fine by calling one function, but when I call the second it triggers an assertion in extended_type_info.cpp: // make sure that attempt at registration is done only once assert(lookup(eti) == m_self->m_map.end()); Apparently the class is registered twice, but how do I avoid that? -- Anders

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