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

SIGSEGV in pthread_mutex_lock with Boost::threads
by Shridhar Daithankar 08 Dec '05

08 Dec '05

Hello, I am writing a thread pool implementation and experiencing SIGSEGV in pthread_mutex_lock under very heavy load. The crashes are repeatable and always produce the same backtrace. Brief description: The threadpool creates the thread with default function objects on request. The default function object launch a user defined function object along with other house keeping. When done the the thread returns itself to pool of free threads(a std::vector) for further assignment. The pool also keeps a map of thread_id(pthread_t) to thread object so that it can signal termination to all of the threads, busy or not. The test has a short function object defined as struct f2 : public pyr::threadFunction { virtual void operator()(void) { int i=0; i++; } }; It assigns the thread from pool to an object of above type in very tight loop. It works will it attempts 600000 objects. Around 700000 objects it starts producing segfaults. There is no importance of either of the figure from testing point of view but the crash is certainly not what I expect. I stumbled upon http://lists.boost.org/boost-users/2005/04/11196.php but this does not seem to be the case in here. But I don't know for sure if I can trust the error checking method I have used. Any help would be greatly appreciated. Regards, Shridhar Following are the details. Platform: Slackware Linux 10.2, Kernel 2.6.13, GCC 3.3.6, NPTL thread library, part of glibc-2.3.5. The backtrace #0 0xb7c9f1f4 in pthread_mutex_lock () from /lib/tls/libpthread.so.0 #1 0xb7d76b2f in pthread_mutex_lock () from /lib/tls/libc.so.6 #2 0xb7ed647e in boost::mutex::do_lock () from /usr/local/lib/libboost_thread-gcc-mt-1_33.so.1.33.0 #3 0xb7efbaa1 in pyr::threadPool::returnThreadToPool () from /home/shridhar/source/shlib/libutils.1.so #4 0xb7ef9732 in pyr::threadState::threadRunDone () from /home/shridhar/source/shlib/libutils.1.so #5 0xb7ef9a6f in pyr::threadWorker::operator() () from /home/shridhar/source/shlib/libutils.1.so #6 0xb7efc96c in boost::detail::function::void_function_obj_invoker0<pyr::threadWorker, void>::invoke () from /home/shridhar/source/shlib/libutils.1.so #7 0xb7edebfa in boost::function0<void, std::allocator<boost::function_base> >::operator() () from /usr/local/lib/libboost_thread-gcc-mt-1_33.so.1.33.0 #8 0xb7ede81f in boost::thread_group::size () from /usr/local/lib/libboost_thread-gcc-mt-1_33.so.1.33.0 #9 0xb7c9d0fb in start_thread () from /lib/tls/libpthread.so.0 #10 0xb7d6a99e in clone () from /lib/tls/libc.so.6 The source function void pyr::threadPool::returnThreadToPool(const tid id) { //Lock the pool so that nobody else can modify it. std::cout << pyr::tid() << " " << "The earth" << std::endl; boost::mutex::scoped_lock lock(poolmutex); std::cout << pyr::tid() << " " << "The stone" << std::endl; pyr::threadptr p = allthreads[id]; std::cout << pyr::tid() << " " << "The carving" << std::endl; pool.push_back(p); std::cout << pyr::tid() << " " << "The step" << std::endl; } The error checking script: #!/bin/bash a=`grep "The earth" log.err |wc -l` b=`grep "The stone" log.err |wc -l` c=`grep "The carving" log.err |wc -l` d=`grep "The step" log.err |wc -l` echo "$a $b $c $d" The results: shridhar@ps0499: $ testprograms/threadpool >log.err 2>&1;error.sh Segmentation fault 67420 67419 67419 67419 shridhar@ps0499: $ testprograms/threadpool >log.err 2>&1;error.sh Segmentation fault 55222 55221 55221 55221 shridhar@ps0499: $ testprograms/threadpool >log.err 2>&1;error.sh Segmentation fault 55702 55701 55701 55701 shridhar@ps0499: $ testprograms/threadpool >log.err 2>&1;error.sh Segmentation fault 123284 123250 123250 123250 shridhar@ps0499: $ testprograms/threadpool >log.err 2>&1;error.sh Segmentation fault 54965 54963 54963 54963 shridhar@ps0499: $ testprograms/threadpool >log.err 2>&1;error.sh Segmentation fault 122436 122419 122419 122419 shridhar@ps0499: $ testprograms/threadpool >log.err 2>&1;error.sh Segmentation fault 57508 57507 57507 57507

1 0

newbie problems with installing boost for vc 7.1
by Piotr Obrzut 08 Dec '05

08 Dec '05

hi, I know related questions was asked before, but I think my situatuation is special: My visual studio instalation is devided on 2 partitions. That's why I think runing vsvars32.bat might not be enough before installing boost (after runing it, boost instalator didn't found my vc7 files). First it was problems with cl.exe (fixed by changing PATH), but later I recieved this message: D:\programowanie\boost_1_33_1>bjam "-sTOOLS=vc-7_1" install ****************************************************** Building Boost.Iostreams with bzip2 support disabled. To enable bzip2, consult the Boost.Iostreams documentation ****************************************************** ****************************************************** Building Boost.Iostreams with zlib and gzip support disabled. To enable zlib and gzip, consult the Boost.Iostreams documentation ****************************************************** Building Boost.Regex with the optional Unicode/ICU support disabled. Please refer to the Boost.Regex documentation for more information (and if you don't know what ICU is then you probably don't need it). ...found 13709 targets... ...updating 1480 targets... vc-C++ bin\boost\libs\date_time\build\boost_date_time.dll\vc-7_1\debug\threading -multi\greg_month.obj spawn: No such file or directory and now I don't know what to do, any ideas? -- greetings, Piotr Obrzut mailto:piotr_obrzut@o2.pl

2 2

Re: [Boost-users] [program_options] how to use case_insensitive
by Merrill Cornish 08 Dec '05

08 Dec '05

Volodya, When someone asked about case insensitive program options, you responsed: >>> it's a regression from 1.32. I'll see if I can fix this quickly. Has this been fixed in 1.33.1? Merrill

2 1

[Build] boost.jam usage examples
by Chris Morley 08 Dec '05

08 Dec '05

Hi, I'm after some more bjam project examples. Have been looking at the ones in the example directory, and wouldn't mind some more just to drill the usage into my head. I'm looking to use this for building our inhouse libaries, seems pretty sweet. Thanks in advance, Chris

2 1

iteration from pure abstract classes
by Hugh Hoover 08 Dec '05

08 Dec '05

I have a need to provide STL compliant iterators from an abstract class A, that is, without knowing the runtime type of the actual "collection" being iterated.. As near as I can tell, these things don't mix well. My best so far is to create an abstract "iterator_assister" which provides dereference, (in|de)crement and is_equal, and use a boost::iterator_adaptor derived class to provide the iterator the client code uses, and allocate the iterator_assister derived class from the implementation class (derived from A) that's being iterated over. This solution has obvious downsides. I can't imagine that this is a unique problem. Certainly, people significantly smarter than me have figured out a good solution to this? In my reading and browsing, though, I've never seen the problem presented, never mind solved. In my early C++ days, we used allocated iterators rather than the current STL style. Can anyone provide pointers to what I SHOULD be reading for a good solution? I believe I NEED to use abstract classes here rather than meta- programming with known types at runtime - the client code will need to iterate over classes loaded from dynamic libraries that are not known to the client code (except by abstract interface). Thanks Hugh Hoover Enumclaw Software

4 8

Re: [Boost-users] Intel Compiler on Windows with stlport
by Marco Azimonti 08 Dec '05

08 Dec '05

Rene Rivera wrote: >To me the "stlpd_std" mention says that it's trying to build with >STLport. Could you provide some details as to how you are configuring >and the bjam commands you are using? Possibly more of the bjam output, >like the compile commands. (removing Python, zlib, etc.)The bjam command is as follows... /////////////////////////////////////////// bjam "-sBUILD=debug release <runtime-link>static/dynamic <threading>single/multi" "-sTOOLS=intel-win32" "-d+2" "-sINTEL_PATH=C:\Program Files\intel\Compiler\C++\9.0\IA32" "-sINTEL_BASE_MSVC_TOOLSET=vc-7_1-stlport" "--prefix=D:\Dlls\boost-1_33_1\VS_2003_Intel" -"sSTLPORT_PATH=K:\coding\src" "-sSTLPORT_VERSION=5.0" install /////////////////////////////////////////// Once is starting compiling, the compiler execute... /////////////////////////////////////////// bin\boost\libs\date_time\build\boost_date_time.dll\intel-win32\debug\threading-multi\greg_month.obj CALL "C:\Program Files\intel\Compiler\C++\9.0\IA32\bin\ICLVARS.BAT" > nul "C:\Program Files\intel\Compiler\C++\9.0\IA32\bin\icl" /Zm800 -nologo /EHsc -c -DBOOST_ALL_DYN_LINK=1 -DUSE_DATE_TIME_PRE_1_33_FACET_IO -D_STLP_DEBUG=1 -D_STLP_DEBUG_UNINITIALIZED=1 -D_STLP_USE_DYNAMIC_LIB=1 /Z7 /Od /Ob0 /EHsc /GR /MDd /Op /wd4675 /Zc:forScope /Qwn5 /Qwd985 /Qwe556 -Qoption,c,--arg_dep_lookup /Qansi_alias /Qvc7.1 /Zc:wchar_t -D_NATIVE_WCHAR_T_DEFINED -I"bin\boost\libs\date_time\build" -I"K:\coding\src\STLport-5.0\stlport" -I"K:\coding\src\boost_1_33_1" -Fo"bin\boost\libs\date_time\build\boost_date_time.dll\intel-win32\debug\threading-multi\greg_month.obj" -Tp"K:\coding\src\boost_1_33_1\libs\date_time\build\../src/gregorian/greg_month.cpp" greg_month.cpp K:\coding\src\boost_1_33_1/boost/detail/sp_counted_base_w32.hpp(68): error: namespace "stlpd_std" has no member "type_info" virtual void * get_deleter( std::type_info const & ti ) = 0; ^ K:\coding\src\boost_1_33_1/boost/detail/sp_counted_impl.hpp(79): error: namespace "stlpd_std" has no member "type_info" virtual void * get_deleter( std::type_info const & ) /////////////////////////////////////////// I added in cc also the boost-build mailing list. Perhaps it is a more appropriate place for discussion. Kind Regards, Marco

1 0

Re: [Boost-users] how to disable autolink feature?
by Marco Azimonti 07 Dec '05

07 Dec '05

Hello Andre, >so what to do? is there a flag to disable autolink? you can modify the file boost/config/user.hpp (http://www.boost.org/libs/config/config.htm) Quote.. /// BOOST_WHATEVER_NO_LIB Tells the config system not to automatically select which library to link against for library "whatever", replace WHATEVER in the macro name with the name of the library; for example BOOST_DATE_TIME_NO_LIB or BOOST_REGEX_NO_LIB. Normally if a compiler supports #pragma lib, then the correct library build variant will be automatically selected and linked against, simply by the act of including one of that library's headers. This macro turns that feature off. ///// Marco

4 3

how to disable autolink feature?
by Andre Krause 07 Dec '05

07 Dec '05

dear boost-users, could someone explain me how to disable the autolink feature of boost? why? 1. no hassle with configurations ( i become independent from the compile mode, i.e. debug/release/multithreaded etc) 2. i do NOT like to be forced to any naming conventions for the libs 3. i do not want to build the full boost lib, just want to include the .cpp files from the few libs of boost i'm using. just including the cpp files works, but the project does not link because visual c++ stops linking because it does not find the libs automagically and unwanted inserted into my project by autolink somewhere.. sadly there even is no simple way to disable the #pragma comment(lib, "autolinkwantstogivealongnametoiostreams.lib"). so what to do? is there a flag to disable autolink?

2 1

Re: [Boost-users] Intel Compiler on Windows with stlport
by Marco Azimonti 07 Dec '05

07 Dec '05

Hello Rene, thank you for your prompt answer and the suggestion. >I think you also have to follow all the docs for vc-7_1-stlport. I.e. >set the various STLPORT* options. Although maybe you already had that >since you where already using it? Various ways to make sure: use the >"-d+2" to see what the commands executed are and if they reference >STlport, add "-sBUILD=<stlport-version>5.0" or such to force it to use >the STLport you have. Effectively, I just copy and modify a little bit my configuration for vc_71-stlport. Unfortunately, it does not work The compilation of all the file is failing as in this case... zlib.cpp K:\coding\src\boost_1_33_1/boost/detail/sp_counted_base_w32.hpp(68): error: namespace "stlpd_std" has no member "type_info" virtual void * get_deleter( std::type_info const & ti ) = 0; compilation aborted for K:\coding\src\boost_1_33_1\libs\iostreams\build\..\src\zlib.cpp (code 4) It seems to me that it is not accepting the -stlport (and the stlport options). Marco

2 1

Thread Library and Borland Builder 6
by Hibbeler, Jens 07 Dec '05

07 Dec '05

Hello I have sucessfully compiled the Boost Library, but I can`t use it. I get a error an the programm chrashes. I have testes it with the files in the example folder. Perhaps anyone can give me a hint, how I get ahead or where my error lies? Which I did: 0) Executed Borland builder Patch No. 4 1) Downloaded Spirit 1.6.3, set environment variable SPIRIT_ROOT on the Spirit listing 2) Set environment variable BCCROOT on c:\programme\borland\cbuilder6 3) Dowloaded the Boost LIBRARY (tried one after the other from 1_32-1_33 beta, all versions), and set the BOOST_ROOT environment variable to the listing in which I boost unpacked. 4) At the Boost tools\build\listing\build.bat executed (compiles correctly for Boland) 5) Executed tools\build\jam_src\bin.ntx86\bjam.exe "- sTOOLS=borland" install (compiled also, but with few warnings) 6) At the listing, in which I unpacked Boost, I started the libs\thread\example file once.cpp 7) I made a Porjekt to compile the file 8) I set atthe project settings the include path on C:\Boost\include\boost-1_32 9) I set atthe project attitudes the LIBRARY path on C:\Boost\lib \ 10) The program compiled and linked 11) When starting the project it crhases immediately and started the monitor, which indicates the storage addresses to me. Where does my error lie? Do I have to adjust something special in the Porjekt still? Many greetings from Hamburg, Jens

1 0

[Boost.Filesystem] Missing inline keywords in I18N branch
by Marc Viala 07 Dec '05

07 Dec '05

Hi, I'm not really sure but I think there are some missing inline declarations in "convenience.hpp" and "fstream.hpp" of Boost.fileystem for the I18N branch. I've joined the patched files Could you confirm these observations? Marc Viala www.acticm.com <http://www.acticm.com> mailto:mviala@acticm.com <mailto:mviala@acticm.com>

1 0

serialize - std::stack
by sui tam 07 Dec '05

07 Dec '05

I have a structure as: stateStack a; typedef std::stack < state*, std_deque<state*>> stateStack How can I serialize this structure? I cannot find any std::stack in the serialization header file. --------------------------------- Yahoo! DSL Something to write home about. Just $16.99/mo. or less

7 14

Re: [Boost-users] boost::sub_range vs boost::iterator_range
by Victor A. Wagner Jr. 07 Dec '05

07 Dec '05

At 14:16 2005-12-05, François Duranleau wrote: >Content-Type: TEXT/PLAIN; charset=ISO-8859-1; format=flowed >X-MIME-Autoconverted: from 8bit to >quoted-printable by milliways.osl.iu.edu id jB5LNecL002899 > >On Sat, 3 Dec 2005, Victor A. Wagner Jr. wrote: > >>After reading (and re-reading a few times) the documentation on >>range, it appears to me that there is little (if any) difference between: >>boost::sub_range<T> >>and >>boost::iterator_range<T::iterator> > >Seems to me that sub_range is a convenience >class to describe iterator ranges from ranges or >containers that model ForwardRange, from which you can propagate constness. yup, that's what I thought also >>I've been working on a N way merge algorithm for work, and thought it >>might be a nice chance to learn bost::range and maybe even get it >>general enough to submit for boost utility some day. >>At any rate. Here's the problem: I've written a test case and two >>implementations (work still in progress) but I get compile errors >>when I try to use sub_range. >> >>the code can be found at http://www.noidea128.org/sourcefiles/15646~ >> >>to change the program from compiling/running the iterator_range to >>sub_range simply change the lne from: >> >>Nway_merge(contain, ourmerged); >>-to- >>SNway_merge(contain, ourmerged); >> >>my compiler (VC-8_0) gives two errors which I cannot decipher. >>Any assistance would be appreciated.... especially if I've >>misunderstood why sub_range instead of iterator_range. > >Mm, I don't know. The only thing g++-4.0 (sorry, >I can't help you with VC) was complaining about >are the missing 'typename's for the declaration >of member_container_iterator and >iterator_range_iterator in Nway_merge, and >sub_range_iterator in SNway_merge. What are the >errors reported by the compiler? I put in the typenames you (your compiler) suggested, that didn't fix the compile here... I still get: 1>------ Build started: Project: MergeTesting, Configuration: Release Win32 ------ 1>Compiling... 1>MergeTesting.cpp 1>c:\boost\include\boost-1_33\boost/range/iterator_range.hpp(61) : error C2440: '<function-style-cast>' : cannot convert from 'std::_Vector_const_iterator<_Ty,_Alloc>' to 'std::_Vector_iterator<_Ty,_Alloc>' 1> with 1> [ 1> _Ty=int, 1> _Alloc=std::allocator<int> 1> ] 1> No constructor could take the source type, or constructor overload resolution was ambiguous 1> c:\boost\include\boost-1_33\boost/range/iterator_range.hpp(238) : see reference to function template instantiation 'IteratorT boost::iterator_range_detail::iterator_range_impl<IteratorT>::adl_begin<const ForwardRange>(ForwardRange &)' being compiled 1> with 1> [ 1> IteratorT=std::_Vector_iterator<int,std::allocator<int>>, 1> ForwardRange=boost::sub_range<member_container> 1> ] 1> c:\boost\include\boost-1_33\boost/range/iterator_range.hpp(245) : see reference to function template instantiation 'boost::iterator_range<IteratorT> &boost::iterator_range<IteratorT>::operator =<boost::sub_range<ForwardRange>>(const boost::sub_range<ForwardRange> &)' being compiled 1> with 1> [ 1> IteratorT=std::_Vector_iterator<int,std::allocator<int>>, 1> ForwardRange=member_container 1> ] 1> C:\Program Files\Microsoft Visual Studio 8\VC\include\xmemory(160) : while compiling class template member function 'void std::allocator<_Ty>::destroy(std::vector<int> *)' 1> with 1> [ 1> _Ty=ci 1> ] 1> C:\Program Files\Microsoft Visual Studio 8\VC\include\vector(416) : see reference to class template instantiation 'std::allocator<_Ty>' being compiled 1> with 1> [ 1> _Ty=ci 1> ] 1> C:\Program Files\Microsoft Visual Studio 8\VC\include\vector(426) : see reference to class template instantiation 'std::_Vector_val<_Ty,_Alloc>' being compiled 1> with 1> [ 1> _Ty=ci, 1> _Alloc=std::allocator<ci> 1> ] 1> .\MergeTesting.cpp(21) : see reference to class template instantiation 'std::vector<_Ty>' being compiled 1> with 1> [ 1> _Ty=ci 1> ] 1>c:\boost\include\boost-1_33\boost/range/iterator_range.hpp(68) : error C2440: '<function-style-cast>' : cannot convert from 'std::_Vector_const_iterator<_Ty,_Alloc>' to 'std::_Vector_iterator<_Ty,_Alloc>' 1> with 1> [ 1> _Ty=int, 1> _Alloc=std::allocator<int> 1> ] 1> No constructor could take the source type, or constructor overload resolution was ambiguous 1> c:\boost\include\boost-1_33\boost/range/iterator_range.hpp(239) : see reference to function template instantiation 'IteratorT boost::iterator_range_detail::iterator_range_impl<IteratorT>::adl_end<const ForwardRange>(ForwardRange &)' being compiled 1> with 1> [ 1> IteratorT=std::_Vector_iterator<int,std::allocator<int>>, 1> ForwardRange=boost::sub_range<member_container> 1> ] 1>Build log was saved at "file://c:\Projects\Viper2005\MergeTesting\Release\BuildLog.htm" 1>MergeTesting - 2 error(s), 0 warning(s) ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== I changed my compiler to use the latest 1_33_1 and I get: 1>------ Build started: Project: MergeTesting, Configuration: Release Win32 ------ 1>Compiling... 1>MergeTesting.cpp 1>c:\boost\include\boost-1_33_1\boost/range/iterator_range.hpp(61) : error C2440: '<function-style-cast>' : cannot convert from 'std::_Vector_const_iterator<_Ty,_Alloc>' to 'std::_Vector_iterator<_Ty,_Alloc>' 1> with 1> [ 1> _Ty=int, 1> _Alloc=std::allocator<int> 1> ] 1> No constructor could take the source type, or constructor overload resolution was ambiguous 1> c:\boost\include\boost-1_33_1\boost/range/iterator_range.hpp(238) : see reference to function template instantiation 'IteratorT boost::iterator_range_detail::iterator_range_impl<IteratorT>::adl_begin<const ForwardRange>(ForwardRange &)' being compiled 1> with 1> [ 1> IteratorT=std::_Vector_iterator<int,std::allocator<int>>, 1> ForwardRange=boost::sub_range<member_container> 1> ] 1> c:\boost\include\boost-1_33_1\boost/range/iterator_range.hpp(245) : see reference to function template instantiation 'boost::iterator_range<IteratorT> &boost::iterator_range<IteratorT>::operator =<boost::sub_range<ForwardRange>>(const boost::sub_range<ForwardRange> &)' being compiled 1> with 1> [ 1> IteratorT=std::_Vector_iterator<int,std::allocator<int>>, 1> ForwardRange=member_container 1> ] 1> C:\Program Files\Microsoft Visual Studio 8\VC\include\xmemory(160) : while compiling class template member function 'void std::allocator<_Ty>::destroy(std::vector<int> *)' 1> with 1> [ 1> _Ty=ci 1> ] 1> C:\Program Files\Microsoft Visual Studio 8\VC\include\vector(416) : see reference to class template instantiation 'std::allocator<_Ty>' being compiled 1> with 1> [ 1> _Ty=ci 1> ] 1> C:\Program Files\Microsoft Visual Studio 8\VC\include\vector(426) : see reference to class template instantiation 'std::_Vector_val<_Ty,_Alloc>' being compiled 1> with 1> [ 1> _Ty=ci, 1> _Alloc=std::allocator<ci> 1> ] 1> .\MergeTesting.cpp(21) : see reference to class template instantiation 'std::vector<_Ty>' being compiled 1> with 1> [ 1> _Ty=ci 1> ] 1>c:\boost\include\boost-1_33_1\boost/range/iterator_range.hpp(68) : error C2440: '<function-style-cast>' : cannot convert from 'std::_Vector_const_iterator<_Ty,_Alloc>' to 'std::_Vector_iterator<_Ty,_Alloc>' 1> with 1> [ 1> _Ty=int, 1> _Alloc=std::allocator<int> 1> ] 1> No constructor could take the source type, or constructor overload resolution was ambiguous 1> c:\boost\include\boost-1_33_1\boost/range/iterator_range.hpp(239) : see reference to function template instantiation 'IteratorT boost::iterator_range_detail::iterator_range_impl<IteratorT>::adl_end<const ForwardRange>(ForwardRange &)' being compiled 1> with 1> [ 1> IteratorT=std::_Vector_iterator<int,std::allocator<int>>, 1> ForwardRange=boost::sub_range<member_container> 1> ] 1>Build log was saved at "file://c:\Projects\Viper2005\MergeTesting\Release\BuildLog.htm" 1>MergeTesting - 2 error(s), 0 warning(s) ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== >-- >François Duranleau >LIGUM, Université de Montréal > >"There once was a boy who dreamed of being a hero, > who believed sincerely in the battle > to banish Darkness from a world of Light. > But Light and Darkness are equal, > and where one exists, so too must the other. > And when the boy finally realized this, > he had taken the first step toward being a true hero." > - from Record of Lodoss War > >_______________________________________________ >Boost-users mailing list >Boost-users(a)lists.boost.org >http://lists.boost.org/mailman/listinfo.cgi/boost-users Victor A. Wagner Jr. http://rudbek.com The five most dangerous words in the English language: "There oughta be a law"

3 4

Intel Compiler on Windows with stlport
by Marco Azimonti 07 Dec '05

07 Dec '05

Hello, I am recently moving from Microsoft to Intel C++ Compiler on windows. Currently I am as well using (|vc-7_1-stlport|) stlport. On the boost documentation page for intel Compiler (http://www.boost.org/tools/build/v1/intel-win32-tools.html) is written that the base toolset for it could |msvc|, |vc7|, or |vc-7_1|. However, |vc-7_1-stlport| is not mentioned. If I set the base toolset |INTEL_BASE_MSVC_TOOLSET| to |vc-7_1-stlport |(and setting the proper stlport options) the build does not produce any error, but I am not sure it is compiling what I want.. ;) It is that enough or do I have to modify the procedure in some way? Thank you in advance, Marco .. http://www.murex.com/webdoc/MUREXTopTechnologyVendor.pdf

2 1

serialization -compile error
by sui tam 07 Dec '05

07 Dec '05

I keep on getting the error: c:\temp\boost\boost_1_33_0\boost/type_traits/is_abstract.hpp(81): error: incomplete type is not allowed BOOST_STATIC_ASSERT(sizeof(T) != 0); ^ detected during: instantiation of class "boost::detail::is_abstract_imp2<T> [with T=TxsOqSourceMaterialization]" at line 121 I checked that I have put the appropriate archive statement in class. How can I get rid of this compile error? --------------------------------- Yahoo! Personals Single? There's someone we'd like you to meet. Lots of someones, actually. Yahoo! Personals

2 1

assignment library with functors
by gast128 06 Dec '05

06 Dec '05

Dear all, I am too tired to investigate it deeply, so does anyone know why this does not compile (on VS 2003): typedef boost::function<int (const int& , const int&)> BinOperand; typedef std::vector<BinOperand> BinOperandVector; BinOperandVector operands = boost::assign::list_of(std::plus<int>()) (std::minus<int>()) (std::multiplies<int>()) (std::divides<int>()); Wkr, me

3 3

Serialization/pickle
by Drumheller, Michael 06 Dec '05

06 Dec '05

>> From: David Abrahams <dave <at> boost-consulting.com> >> Subject: Re: Boost.python serialization >> Newsgroups: gmane.comp.lib.boost.user >> Date: 2005-11-29 23:28:17 GMT (6 days, 17 hours and 9 minutes ago) >> >> "Drumheller, Michael" <michael.drumheller <at> boeing.com> writes: >> >> > Thank you for the help. I have seen that link (the one you supplied) >> > before, but I posted my question because that link in particular does >> > not mention the words "Boost.Serialization" or "Archive" at all. >> >> That's because the Boost Serialization library is unrelated. I understand that it is technically unrelated. I am asking for information about about patterns of actual usage. >> > I suppose what I was really getting at, and was probably not very >> > clear about (sorry :| ) was whether the specific approach (by >> > N. Becker) of using a stringstream wrapped with a >> > boost::archive::binary_oarchive is a standard idiom. >> >> "Standard?" OK: "common," "popular," "preferred," "regarded-as-best-practice," "effective." >> > (Basically, I would have thought that "python pickle boost::archive" >> > would be a million-hit Google query, but it's only about a dozen. I >> > find that weird. Do people just not serialize their C++ extensions >> > very often?) >> >> Yes, they do it very often. There's usually no need to touch >> Boost.Serialization in order to do so, though. My extensions refer to one another, i.e., they form a significant object hierarchy in and of themselves. E.g., on the C++ side I might have an instance x of class X, which contains a vector of shared_ptrs p1,...,pn to instances y1,...,yn of another C++ class Y. At pickle-time there may be Python object z with a member u bound to to x and members w1,...,wm bound to a subset of the y1,...,yn. Is it even feasible to expect to be able to simple pickle.dump z and have it all work? Please keep in mind: I am just getting started wading into serializing a pretty complicated set of strongly interdependent Python and C++ objects and I am just trying to get my bearings. If this is the wrong forum to be asking these questions, please tell me. MD >> -- >> Dave Abrahams >> Boost Consulting >> www.boost-consulting.com

2 1

threads - thread_resource_error thrown by creating more than 256 threads
by Oliver.Kowalke＠infineon.com 06 Dec '05

06 Dec '05

Hi, if I try to create more than 255 threads (256 for instance) I get the exception thread_resource_error thrown. How can I increase the amount of threads? My System: Linux 2.4.21, gcc 3.3.1 (posix thread model). cat /proc/sys/kernel/threads-max --> max 12152 threads per process currently allowed With best regards, Oliver

3 2

Problem compiling boost on HP11i with aCC
by Gaurav Gehlot 06 Dec '05

06 Dec '05

I am trying to compile boost 1.30.02 library with aCC 03.55 on HP-UX 11i, but I am getting following errors. Can anybody pls tell me what is causing these errors. aCC -AA -c +W823 -I/data/projects/sable/appl/ggehlot/boost-1.30.2 -DNDEBUG -DBOOST_DATE_TIME_POSIX_TIME_STD_CONFIG -O3 +Z -I" libs/date_time/build" -I"/data/projects/sable/appl/ggehlot/boost-1.30.2" -o "libs/date_time/build/bin/libboost_date_time.so/acc/release /runtime-link-dynamic/shared-linkable-true/greg_month.o" "libs/date_time/build/../src/gregorian/greg_month.cpp" ...failed aCC-C++-action libs/date_time/build/bin/libboost_date_time.so/acc/release/runtime-link-dynamic/shared-linkable-true/greg_month. o... ...skipped <libs!date_time!build/libboost_date_time.so/acc/release/runtime-link-dynamic/shared-linkable-true>libboost_date_time.so for la ck of <libs!date_time!build/libboost_date_time.so/acc/release/runtime-link-dynamic/shared-linkable-true>greg_month.o... ...skipped <libs!regex!build/libboost_regex.so/acc/debug/runtime-link-dynamic/shared-linkable-true>libboost_regex.so for lack of <libs!re gex!build/libboost_regex.so/acc/debug/runtime-link-dynamic/shared-linkable-true>cregex.o... aCC-Link-action libs/signals/build/bin/libboost_signals.so/acc/debug/runtime-link-dynamic/shared-linkable-true/libboost_signals.so /usr/ccs/bin/ld: Unsatisfied symbols: main (Not referenced yet! Probably due to -u option) aCC -g -AA -o "libs/signals/build/bin/libboost_signals.so/acc/debug/runtime-link-dynamic/shared-linkable-true/libboost_signals.so" "libs/signals/build/bin/libboost_signals.so/acc/debug/runtime-link-dynamic/shared-linkable-true/trackable.o" "libs/signals/build/bin/ libboost_signals.so/acc/debug/runtime-link-dynamic/shared-linkable-true/connection.o" "libs/signals/build/bin/libboost_signals.so/acc/deb ug/runtime-link-dynamic/shared-linkable-true/signal_base.o" "libs/signals/build/bin/libboost_signals.so/acc/debug/runtime-link-dynamic/sh ared-linkable-true/slot.o" ...failed aCC-Link-action libs/signals/build/bin/libboost_signals.so/acc/debug/runtime-link-dynamic/shared-linkable-true/libboost_signals .so... ...removing libs/signals/build/bin/libboost_signals.so/acc/debug/runtime-link-dynamic/shared-linkable-true/libboost_signals.so aCC-Link-action libs/signals/build/bin/libboost_signals.so/acc/release/runtime-link-dynamic/shared-linkable-true/libboost_signals.so /usr/ccs/bin/ld: Unsatisfied symbols: main (Not referenced yet! Probably due to -u option) aCC -s -AA -o "libs/signals/build/bin/libboost_signals.so/acc/release/runtime-link-dynamic/shared-linkable-true/libboost_signals.s o" "libs/signals/build/bin/libboost_signals.so/acc/release/runtime-link-dynamic/shared-linkable-true/trackable.o" "libs/signals/build/ bin/libboost_signals.so/acc/release/runtime-link-dynamic/shared-linkable-true/connection.o" "libs/signals/build/bin/libboost_signals.so/a cc/release/runtime-link-dynamic/shared-linkable-true/signal_base.o" "libs/signals/build/bin/libboost_signals.so/acc/release/runtime-link- dynamic/shared-linkable-true/slot.o" ...failed aCC-Link-action libs/signals/build/bin/libboost_signals.so/acc/release/runtime-link-dynamic/shared-linkable-true/libboost_signa ls.so... ...removing libs/signals/build/bin/libboost_signals.so/acc/release/runtime-link-dynamic/shared-linkable-true/libboost_signals.so aCC-Link-action libs/test/build/bin/libboost_prg_exec_monitor.so/acc/debug/runtime-link-static/shared-linkable-true/threading-single/libb oost_prg_exec_monitor.so /usr/ccs/bin/ld: Can't find library: "libstd_v2.a" aCC -llibstd_v2.a -g -AA -o "libs/test/build/bin/libboost_prg_exec_monitor.so/acc/debug/runtime-link-static/shared-linkable-true/t hreading-single/libboost_prg_exec_monitor.so" "libs/test/build/bin/libboost_prg_exec_monitor.so/acc/debug/runtime-link-static/shared-l inkable-true/threading-single/execution_monitor.o" "libs/test/build/bin/libboost_prg_exec_monitor.so/acc/debug/runtime-link-static/shared -linkable-true/threading-single/cpp_main.o" ...failed aCC-Link-action libs/test/build/bin/libboost_prg_exec_monitor.so/acc/debug/runtime-link-static/shared-linkable-true/threading-s ingle/libboost_prg_exec_monitor.so... aCC-Link-action libs/test/build/bin/libboost_prg_exec_monitor.so/acc/debug/runtime-link-static/shared-linkable-true/threading-multi/libbo ost_prg_exec_monitor.so /usr/ccs/bin/ld: Can't find library: "libstd_v2.a" ----------------------------------------- This message and its attachments may contain privileged and confidential information. If you are not the intended recipient(s), you are prohibited from printing, forwarding, saving or copying this email. If you have received this e-mail in error, please immediately notify the sender and delete this e-mail and its attachments from your computer.

1 0

Wave: how to recover after errors?
by Max Motovilov 06 Dec '05

06 Dec '05

I have a simple problem: wave warnings (specifically, macro re-definition) are reported as exceptions thrown from [potentially, any of, at least I don't yet know better] the methods of pp_iterator. It is very simple to catch one and print a message, however I can't figure out how to recover after one. Can't seem to find any mention of error recovery in documentation, tried some variations of last_known_good_iterator (store a copy before every increment, restore back to known copy in exception handler) -- it recovers simple cases but on more complex files there appears to be internal state corruption. Also, even when this recovery works, it leaves macro in the pre-redefinition state whereas the usual cpp policy is to allow redefinition and print a warning. I thought of using a preventive strategy -- undefine the existing macro from a policy method -- but unfortunately the exception is thrown before defined_macro() is called. Looks like it's time to ask the owners of the library: how do I do this? :-) Thanks in advance, ...Max... PS. I am using 1.33.0; should I _really_ _really_ be upgrading to 1.33.1 to get this resolved?

3 8

[serialization] seriazation from base pointer / Runtime Casting
by __PPS__ 06 Dec '05

06 Dec '05

is it possible to have this exported from dll: ///export.h/// #include <boost/serialization/serialization.hpp> class session_record { virtual void print_on(std::ostream& os) const = 0; friend std::ostream & operator<<(std::ostream& os, const session_record& sr){ sr.print_on(os); return os; } public: friend class boost::serialization::access; virtual ~session_record(); template<class Archive> void serialize(Archive & ar, const unsigned int file_version){} operator session_record *(); }; void serialize(session_record* derived, const char* file_name); session_record* deserialize(const char* file_name); ///end of export.h/// and then in an application (linked to the dll that exports all from export.h) I create derived classes from session_record and serialize or deserialize them to/from files using the two exported free functions. I followed exactly steps in "Runtime Casting" of the manual, but it doesn't work. So... is it really runtime if it doesn't work this way - it only works if all the derived classes are known & registered at the time of compilation of the two functions. All that worked well if everything from export.h was linked statically, but not dynamically Am I doing something wrong with all that stuff?? thanks

2 4

STLPort & VC++ 8?
by Jerker Öhman 06 Dec '05

06 Dec '05

Does anyone know if there are plans to support STLPort 5 with Visual C++ 8? Although Microsoft know ships a good implementation of STL, STLPort is much faster and has a nice debug mode so I think it would be nice to continue to support it. /Jerker

1 0

Implementing an Event class
by Raffaele Romito 06 Dec '05

06 Dec '05

Hi, I need to implement an Event class around (I suppose) boost::condition. The class needs the follow interface class Event { public: Event(); ~Event(); public: void reset(); void signal(); void wait(unsigned int ms = 0); // 0 = infinite }; Any advice? Thanks

1 0

Re: [Boost-users] [multi_index] Problem with find() and Hashed_Index
by Martin Higham 06 Dec '05

06 Dec '05

Thats just what I needed to know. It's all working fine now. Thanks Martin > From: JOAQUIN LOPEZ MU?Z <joaquin(a)tid.es> > To: boost-users(a)lists.boost.org > Date: Sun, 04 Dec 2005 00:31:08 +0100 > Subject: Re: [Boost-users] [multi_index] Problem with find() and > Hashed_Index > Hello Martin, > > ----- Mensaje original ----- > De: Martin Higham <martinh(a)gmail.com> > Fecha: Sábado, Diciembre 3, 2005 11:42 am > Asunto: [Boost-users] [multi_index] Problem with find() and > Hashed_Index > > > I have created a multi_index_container inline with one ordered_unique > > index and one hashed_unique index as demonstrated in the > > documentation > > > (http://www.boost.org/libs/multi_index/doc/advanced_topics.html#hash_lo > okup).I can happily add and retrieve items using find() as indicated. > > > > However, if I use the =* operator as indicated and there is no > > matching record a memory error occurs. > > > > Therefore I need to assign the find result to an iterator and check > > for end(). Can anyone tell me what type this iterator should be? I've > > tried many combinations non of which compile. > > There are several syntaxes to get to the type > of the iterator: > > your_container_type::nth_index<N>::type::iterator > your_container_type::index<Tag>::type::iterator > your_container_type::nth_index_iterator<N>::type > your_container_type::index_iterator<Tag>::type > > Where N is the 0-based ordinal of the index you're > interested in. If the index is tagged, you can also > use the <Tag> variations. > Does this help? Thanks for using Boost.MultiIndex! > > Joaquín M López Muñoz > Telefónica, Investigación y Desarrollo >

1 0

Boost.Filesystem DLL builds on Mingw
by Alo Sarv 06 Dec '05

06 Dec '05

The topic itself is already few months old, namely the fact that Boost.Filesystem library breaks on Mingw in DLL builds. As I see from regression tests, this issue hasn't been fixed yet. The reason I'm bringing this up again is that while originally it was concluded that static builds should be used on Mingw instead of DLL builds, it is becoming an increasing problem for me, since default_name_check doesn't work across DLL boundaries when B.FS is linked statically to one of the DLL's, which results unexpected exceptions being thrown all over my codebase unless I explicitly construct paths using native name-checker, but tracking all those places is a constant headache. Is there any plans on addressing this issue, or are there any additional workarounds to have default_name_check functioanlity working across DLL boundaries when Boost.Filesystem is linked statically? My experience has been that mixing dynamic and static libraries is a really bad idea... Alo Sarv

3 2

[boost][lambda] additional placeholders
by Noel Belcourt 06 Dec '05

06 Dec '05

HI, I'm trying to extend the number of placeholders in boost lambda 1.33.0. There are three available by default and I need at least one more (_4) . I've followed the pattern establish for _3 to define _4, modifying the following files along the way. // lambda/core.hpp boost::lambda::placeholder3_type free3 = boost::lambda::placeholder3_type(); boost::lambda::placeholder4_type free4 = boost::lambda::placeholder4_type(); boost::lambda::placeholder3_type& _3 = free3; boost::lambda::placeholder4_type& _4 = free4; // lambda/detail/lambda_functors.hpp template<> struct placeholder<FOURTH> { template<class SigArgs> struct sig { typedef typename detail::get_element_or_null_type<3, SigArgs>::type type; }; template<class RET, CALL_TEMPLATE_ARGS> RET call(CALL_FORMAL_ARGS) const { CALL_USE_ARGS; return c; } }; typedef const lambda_functor<placeholder<THIRD> > placeholder3_type; typedef const lambda_functor<placeholder<FOURTH> > placeholder4_type; // lambda/detail/arity_code.hpp enum { NONE = 0x00, // Notice we are using bits as flags here. FIRST = 0x01, SECOND = 0x02, THIRD = 0x04, FOURTH = 0x08, EXCEPTION = 0x10, RETHROW = 0x20}; So now _4 is defined but I get compilation errors from boost/function/function_template.hpp when I attempt to use _4. Is there some change necessary to either lambda placeholders or to boost function to get it to work correctly? Thanks, -- Noel Belcourt // With the changes above, this code fails with the message below. #include <boost/function.hpp> #include <boost/lambda/bind.hpp> using namespace boost; using namespace boost::lambda; typedef function<void (int, int, double, double)> func_t; template <class T1, class T2, class T3, class T4> struct A { template <class R> A(void (R::*required)(T1, T2, T3, T4), R *r) : u(bind(required, r, _1, _2, _3, _4)) {} func_t u; }; struct B { void f(int, int, double, double); }; int main(int, char *[]) { B b; A<int, int, double, double> a(&B::f, &b); return 0; } This is the error message from CW 9.6 on Darwin Error : call of non-function (point of instantiation: 'main(int, char **)') (instantiating: 'A<int, int, double, double>::A<B>(void (B::*)(int, double, double), B *)') (instantiating: 'boost::function4<void, int, int, double, double, std::allocator<void>>::function4 `base constructor'<boost::lambda::lambda_functor<boost::lambda:: lambda_functor_base<boost::lambda::action<6, boost::lambda::function_action<6, boost::lambda::detail::unspecified>>, boost::tuples::tuple<void (B::*const )(int, double, double), B *const , const boost::lambda::lambda_functor<boost::lambda::placeholder<1>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<2>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<4>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<8>>, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type>>>>(boost::lambda::lambda_functor<boost:: lambda::lambda_functor_base<boost::lambda::action<6, boost::lambda::function_action<6, boost::lambda::detail::unspecified>>, boost::tuples::tuple<void (B::*const )(int, double, double), B *const , const boost::lambda::lambda_functor<boost::lambda::placeholder<1>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<2>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<4>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<8>>, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type>>>, int)') (instantiating: 'boost::function4<void, int, int, double, double, std::allocator<void>>::assign_to<boost::lambda::lambda_functor<boost:: lambda::lambda_functor_base<boost::lambda::action<6, boost::lambda::function_action<6, boost::lambda::detail::unspecified>>, boost::tuples::tuple<void (B::*const )(int, double, double), B *const , const boost::lambda::lambda_functor<boost::lambda::placeholder<1>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<2>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<4>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<8>>, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type>>>>(boost::lambda::lambda_functor<boost:: lambda::lambda_functor_base<boost::lambda::action<6, boost::lambda::function_action<6, boost::lambda::detail::unspecified>>, boost::tuples::tuple<void (B::*const )(int, double, double), B *const , const boost::lambda::lambda_functor<boost::lambda::placeholder<1>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<2>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<4>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<8>>, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type>>>)') (instantiating: 'boost::function4<void, int, int, double, double, std::allocator<void>>::assign_to<boost::lambda::lambda_functor<boost:: lambda::lambda_functor_base<boost::lambda::action<6, boost::lambda::function_action<6, boost::lambda::detail::unspecified>>, boost::tuples::tuple<void (B::*const )(int, double, double), B *const , const boost::lambda::lambda_functor<boost::lambda::placeholder<1>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<2>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<4>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<8>>, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type>>>>(boost::lambda::lambda_functor<boost:: lambda::lambda_functor_base<boost::lambda::action<6, boost::lambda::function_action<6, boost::lambda::detail::unspecified>>, boost::tuples::tuple<void (B::*const )(int, double, double), B *const , const boost::lambda::lambda_functor<boost::lambda::placeholder<1>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<2>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<4>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<8>>, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type>>>, boost::detail::function::function_obj_tag)') (instantiating: 'boost::detail::function::void_function_obj_invoker4<boost::lambda:: lambda_functor<boost::lambda::lambda_functor_base<boost::lambda:: action<6, boost::lambda::function_action<6, boost::lambda::detail::unspecified>>, boost::tuples::tuple<void (B::*const )(int, double, double), B *const , const boost::lambda::lambda_functor<boost::lambda::placeholder<1>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<2>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<4>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<8>>, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type>>>, void, int, int, double, double>::invoke(boost::detail::function::any_pointer, int, int, double, double)') function_template.hpp line 136 BOOST_FUNCTION_RETURN((*f)(BOOST_FUNCTION_ARGS)); Error : call of non-function (instantiating: 'boost::detail::function::void_function_obj_invoker4<boost::lambda:: lambda_functor<boost::lambda::lambda_functor_base<boost::lambda:: action<6, boost::lambda::function_action<6, boost::lambda::detail::unspecified>>, boost::tuples::tuple<void (B::*const )(int, double, double), B *const , const boost::lambda::lambda_functor<boost::lambda::placeholder<1>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<2>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<4>>, const boost::lambda::lambda_functor<boost::lambda::placeholder<8>>, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type>>>, void, int, int, double, double>::invoke(boost::detail::function::any_pointer, int, int, double, double)') function_template.hpp line 136 BOOST_FUNCTION_RETURN((*f)(BOOST_FUNCTION_ARGS));

2 2

Automatically including libaries
by Chris Morley 06 Dec '05

06 Dec '05

Hi, this is a how-is-it-done question rather than a problem. Ive learnt a lot about c++ from using boost, but this one I just cant work out. I installed boost and it dumped all the libraries in c\boost\lib.Now I am slightly confused how I'm able to simply reference a header file in c:\boost\include\blahblah yet I don't have to include the specific libraries... somehow its done for me?! This is using visual studio, and whenever I have built lib files I have to include the header file as usual, but also have to explicitly drag the lib file into the project (or under the required libraries in the linker tab). Any idea how this is done? Would love to be able to do this with my libs! Cheers, Chris

5 4

[Announce] Boost 1.33.1 released
by Douglas Gregor 06 Dec '05

06 Dec '05

Boost 1.33.1, the latest version of peer-reviewed, portable C++ libraries, has been released. This is a bug fix release addressing many small problems with the 1.33.0 release. It is a recommended upgrade for all users of Boost 1.33.0. Boost is available at http://www.boost.org Updated Libraries include: * Any Library: Cast to reference types introduced in 1.33.0 is now documented on any_cast documentation page. * Config Library: Don't undef BOOST_LIB_TOOLSET after use. * Boost.Python: o The build now assumes Python 2.4 by default, rather than 2.2 o Support Python that's built without Unicode support o Support for wrapping classes with overloaded address-of (&) operators * Smart Pointer Library: Fixed problems under Metrowerks CodeWarrior on PowerPC (Mac OS X) with inlining on, GNU GCC on PowerPC 64. * Regex Library: Fixed the supplied makefiles, and other small compiler specific changes. Refer to the regex history page for more information on these and other small changes. * Iostreams Library: Improved the interface for accessing a chain's components, added is_open members to the file and file descriptor devices, fixed memory-mapped files on Windows, and made minor changes to the documentation. * Functional/Hash Library: Fixed the points example. * Multi-index Containers Library: Fixed a problem with multithreaded code, and other minor changes. Refer to the library release notes for further details. * Graph Library: o Fixed a problem with the relaxed heap on x86 Linux (fixes bug in dijkstra_shortest_paths). o Fixed problems with cuthill_mckee_ordering and king_ordering producing no results. o Added color_map parameter to dijkstra_shortest_paths. * Signals Library: Fixed problems with the use of Signals across shared library boundaries. * Thread library: read_write_mutex has been removed due to problems with deadlocks. * Wave library (V1.2.1) Fixed a couple of problems, refer to the change log for further details. Supported Compilers Boost is tested on a wide range of compilers and platforms. Since Boost libraries rely on modern C++ features not available in all compilers, not all Boost libraries will work with every compiler. The following compilers and platforms have been extensively tested with Boost, although many other compilers and platforms will work as well. For more information, see the regression test results. New for this release: Support for building with the newest STLport-5.0 was added. The support includes building with MinGW Runtime 3.8 plus STLport-5.0 improved to support wide character operations. Apple GCC 4.0, HP Tru64 C++, and Microsoft Visual C++ 8.0 are supported platforms. We have added an experimental autoconf-like configure script for Unix-like systems: run configure --help for more information. * Apple GCC 3.3, 4.0 on Mac OS X. * Borland C++ 5.6.4 on Windows. * GNU C++ 2.95.3 (with and without STLport), 3.2.x., 3.3.x, 3.4.x, 4.0.x on Windows, Linux and Solaris. * HP C++ for Tru64 UNIX 7.1. * Intel C++ 8.1, 9.0 on Windows, Linux. * Metrowerks CodeWarrior 8.3, 9.4, 9.5 on Mac OS X and Windows. * Microsoft Visual C++ 6.0 (sp5, with and without STLport), 7.0, 7.1, 8.0. Note: Boost does not support the non-standard "Safe" C++ Library shipping with Visual C++ 8.0, which may result in many spurious warnings from Boost headers and other standards- conforming C++ code. To suppress these warnings, define the macro _SCL_SECURE_NO_DEPRECATE. Acknowledgements Douglas Gregor managed this release. A great number of people contributed their time and expertise to make this release possible. Special thanks go to Aleksey Gurtovoy and Misha Bergal, who managed to keep the regression testing system working throughout the release process; David Abrahams, Beman Dawes, Aleksey Gurtovoy, Bronek Kozicki, Rene Rivera and Jonathan Turkanis for greatly improving the quality of this release; Rene Rivera for the new Boost web page design; and Zoltan "cad" Juhasz for the new Boost logo.

1 0

[wave] bug report for wave
by Andreas Sæbjørnsen 05 Dec '05

05 Dec '05

When preprocessing the code #define $jack int test; $jack using any preprocessor using the wave library, in this case the samples/lexed_tokens/lexed_tokens preprocessor , gives the following error: PP_DEFINE (#369) at test.C ( 1/ 1): >#define< SPACE (#393) at test.C ( 1/ 8): > < lexed_tokens: /home/saebjornsen1/projects/boost/boost/wave/token_ids.hpp:497: boost::wave::util::flex_string<char, std::char_traits<char>, std::allocator<char>, boost::wave::util::CowString<boost::wave::util::AllocatorStringStorage<char, std::allocator<char> >, char*> > boost::wave::get_token_name(boost::wave::token_id): Assertion `id < T_LAST_TOKEN-T_FIRST_TOKEN' failed. Aborted using the preprocesor cpp (from the gcc team) I get (as cpp test.C): # 1 "test.C" # 1 "<built-in>" # 1 "<command line>" # 1 "test.C" int test; I believe the problem lies in that the lexer does not recognize the '$' as a valid character within the name of macro definition. Thanks Andreas Saebjoernsen

6 14

[Serialization] Pure binary archive available?
by Chris . 05 Dec '05

05 Dec '05

Hi, the serialization library is almost what im after. My only problem is that in the archive output additional data is added to the start of the archive (for example "22 serialization::archive" for text files). Is there any way of disabling this? In my case, I require a pure binary archive. Ideally i would like to write one if one doesnt exist but i'm not sure if i have time, depending on how hard it would be. How hard would it be do make my own archive type, where by i could set the endian field to convert bigendian to littleendian depending on what the user defines the 'archive endianess' to be on archive construction? I have done this with my own serialization library, however i dont want to extend that because it only handles c++ primitives and dealing with pointers things start getting horrible very very quickly! Thanks in advance. Chris _________________________________________________________________ MSN Messenger 7.5 is now out. Download it for FREE here. http://messenger.msn.co.uk

4 4

libboost_unit_test_framework-vc71-mt-s-1_33.lib?
by Mingjun Huang 05 Dec '05

05 Dec '05

I have built boost using: bjam "-sBUILD=release <runtime-link>dynamic <threading>multi" "-sTOOLS=vc-7_1" but I can not find the library file: libboost_unit_test_framework-vc71-mt-s-1_33.lib can anyone give me a hand? Thanks so much! On 12/3/05, gast128 <gast128(a)hotmail.com> wrote: > > Mingjun Huang <mingjun.huang <at> gmail.com> writes: > > > > > > > Hello, I am a newbie for Boost. Could anyone give me some directions on > how > to build boost on my PC with Visual Studio .NET 2003 installed? Thanks a > lot! > > > > Best, > > -Mingjun > > > > > > _______________________________________________ > > Boost-users mailing list > > Boost-users <at> lists.boost.org > > http://lists.boost.org/mailman/listinfo.cgi/boost-users > > > or http://www.codeproject.com/tips/Building_boost_libraries.asp > > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users

3 2

[Serialization] Compile error in heap_allocator.invoke in MSVC8 debug mode
by Tim Murray 05 Dec '05

05 Dec '05

Hi, I have successfully compiled the boost libs for the serialization library using bjam and I am now trying to make use of it in my project. I am building my project in MSVC8. It has successfully compiled and run in Release mode, but I am getting a compiler error in Debug mode on the same code and am at a loss as to what the problem is. The compiler error I am getting is: iserializer.hpp(252) : error C2065: '()' : undeclared identifier Here's a bit from the template stack trace: ...iserializer.hpp(252) : error C2544: expected ')' for operator '()' ...iserializer.hpp(251) : while compiling class template member function 'World::CWorld *boost::archive::detail::heap_allocator<T>::invoke(void)' 1> with 1> [ 1> T=World::CWorld 1> ] The following is the class this is complaining about: namespace World { class CWorld { friend class boost::serialization::access; template<class Archive> void save(Archive & ar, const unsigned int version) const; template<class Archive> void load(Archive & ar, const unsigned int version); BOOST_SERIALIZATION_SPLIT_MEMBER() public: ~CWorld(); static CWorld* getWorld(){ return m_world; } static bool loadWorld(std::string filename); static bool saveWorld(std::string filename); static bool unloadWorld(); protected: CWorld(); static CWorld *m_world; }; } And the source of the error traces back to the following member function: bool CWorld::loadWorld(std::string filename) { if(m_world) return false; m_world = new CWorld(); // create and open an archive for input std::ifstream ifs(filename.c_str(), std::ios::binary); boost::archive::text_iarchive ia(ifs); // read class state from archive ia & *m_world; //!!!this is the line that the error traces to return true; } Like I said - this code compiles fine under Release mode, but this error keeps showing up on Debug mode. Any ideas on what might be wrong? And if you need more information, just ask. Thanks, Tim Murray

2 3

[Serialization] Resolved problems with vs 7.1 -- kind of
by David Parks 04 Dec '05

04 Dec '05

First off, I apologize for not replying directly to my last message but I'm not even sure it's been posted yet -- as I don't have permission to post yet (the 'first message is moderated' deal). Anyway, I wasn't able to make the example in my last post work with any sane process but I did get it to work by doing the following: 1) splitting the stuff into 3 files -- the main driver, the class header, and the class .cpp. I put both classes in the class files. 2) Including the */archive/* files in the class cpp immediately followed by export.hpp... then the class header. 3) Including the same archive headers in the class header followed by serialization.hpp (I'm sure this could be done lighter but...) 4) Including only the class header in main. 5) BOOST_CLASS_EXPORT(derived) in the class cpp. 6) This is where it starts to diverge from any information in the tutorials and documentation. First, I had to switch from text to xml. I'm not positive but, if I couldn't get it to work after 12 straight hours, I'd guess the text interface is broken. 7) You will get a pretty incorrect error (in the header comments) if you don't call the base class in the derived class serialization (ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(base);). This is not ideal because in many instances, like mine, you might not care about the bases serialization if you have a derived class... the derived class is 'smarter'. But this I can deal with. What I needed to do was serialize a vector of objects of some base class -- you know, like the useless circles and squares of shapes example in every intro C++ book. The documentation could use this as an example -- it has to be one of the most common uses for a serializer. Oh, one goofy note that thankfully only took a couple of minutes to catch: namespaces aren't all the rage but if you make big use of them (like me), beware of BOOST_CLASS_EXPORT... it takes a flash of inspiration to realize that it's going to try to put colons in your XML tags. Even more tricky is the situation where you are calling, say, the base-class with BOOST_SERIALIZATION_BASE_OBJECT_NVP. It stringizes this without telling you -- it has to. But if you do this ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(A::B) you will get an error but this (thankfully) using namespace A; ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(B); works. I have no idea how to make this friendly. Best, - David

2 1

Serialization v1.33.0 and Serializing derived classes through base class
by David Parks 04 Dec '05

04 Dec '05

I'm having a newbie issue with serialization on a derived class with a virtual function. I'm using the 1.33.0 build on VS 7.1. I've shrunken my code to a micro-version of what I tried to do. Here I have two classes, A and B, where B is a subclass of A. They share a virtual function (ie B overrides dumpFunc in A). I've registered B with BOOST_CLASS_EXPORT(B). I've turned on RTTI in VS 7.1 (/GR or whatever). Still, I get a run time assert error in the boost library telling me that the derived/base relationship wasn't registered. Here's the code. I'll try to spell out the error below. #include <string> #include <fstream> #include <boost/archive/tmpdir.hpp> #include <boost/archive/text_iarchive.hpp> #include <boost/archive/text_oarchive.hpp> #include <boost/serialization/export.hpp> #include <boost/serialization/base_object.hpp> #include <boost/serialization/utility.hpp> #include <boost/serialization/vector.hpp> class A; class B; class A { friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & m_className; }; std::string m_className; public: A() { m_className = "ClassA\n"; }; virtual void dumpFunc() {}; }; class B : public A { friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & m_classNameB; }; std::string m_classNameB; public: B() { m_classNameB = "ClassB\n"; }; virtual void dumpFunc() {}; }; BOOST_CLASS_EXPORT(B) void main() { std::vector<A *> vecA; B *b=new B(); vecA.push_back(b); std::ofstream ofs("saveFile.sav"); boost::archive::text_oarchive oa(ofs); oa & vecA; delete b; } The following is a stack trace of where it hits the assert. The key thing to note is that save_pointer_type bails out after deciding that class B was not registered. I'm hoping that this is a rookie error but I just can't see it. Thanks. kernel32.dll!7c81eb33() kernel32.dll!7c81eb33() junkProject.exe!_CxxThrowException(void * pExceptionObject=0x0012de10, const _s__ThrowInfo * pThrowInfo=0x004f8400) + 0x39 C++ > junkProject.exe!boost::throw_exception<boost::archive::archive_exception>(const boost::archive::archive_exception & e={...}) Line 40 C++ junkProject.exe!boost::archive::detail::save_pointer_type<boost::archive::text_oarchive,A *>::polymorphic<A>::save(boost::archive::text_oarchive & ar={...}, const A & t={...}, const boost::archive::detail::basic_pointer_oserializer * bpos_ptr=0x00504544) Line 410 + 0x34 C++ junkProject.exe!boost::archive::detail::save_pointer_type<boost::archive::text_oarchive,A *>::save<A>(boost::archive::text_oarchive & ar={...}, const A & t={...}, const boost::archive::detail::basic_pointer_oserializer * bpos_ptr=0x00504544) Line 438 + 0x11 C++ junkProject.exe!boost::archive::detail::save_pointer_type<boost::archive::text_oarchive,A *>::invoke(boost::archive::text_oarchive & ar={...}, A * const t=0x00323bb0) Line 466 + 0x11 C++ junkProject.exe!boost::archive::save<boost::archive::text_oarchive,A *>(boost::archive::text_oarchive & ar={...}, A * const & t=0x00323bb0) Line 535 + 0xf C++ junkProject.exe!boost::archive::basic_text_oarchive<boost::archive::text_oarchive>::save_override<A * const>() Line 78 + 0x15 C++ junkProject.exe!boost::archive::detail::interface_oarchive<boost::archive::text_oarchive>::operator<<<A * const>() Line 86 C++ junkProject.exe!boost::serialization::nvp<A * const>::save<boost::archive::text_oarchive>() Line 78 C++ junkProject.exe!boost::serialization::access::member_save<boost::archive::text_oarchive,boost::serialization::nvp<A * const> const >() Line 94 C++ junkProject.exe!boost::serialization::detail::member_saver<boost::archive::text_oarchive,boost::serialization::nvp<A * const> >::invoke(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<A * const> & t={...}, const unsigned int file_version=0) Line 43 + 0x11 C++ junkProject.exe!boost::serialization::split_member<boost::archive::text_oarchive,boost::serialization::nvp<A * const> >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<A * const> & t={...}, const unsigned int file_version=0) Line 69 + 0x11 C++ junkProject.exe!boost::serialization::nvp<A * const>::serialize<boost::archive::text_oarchive>() Line 87 + 0x34 C++ junkProject.exe!boost::serialization::access::serialize<boost::archive::text_oarchive,boost::serialization::nvp<A * const> >() Line 110 C++ junkProject.exe!boost::serialization::serialize<boost::archive::text_oarchive,boost::serialization::nvp<A * const> >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<A * const> & t={...}, const unsigned int file_version=0) Line 81 + 0x11 C++ junkProject.exe!boost::serialization::serialize_adl<boost::archive::text_oarchive,boost::serialization::nvp<A * const> >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<A * const> & t={...}, const unsigned int file_version=0) Line 140 + 0x18 C++ junkProject.exe!boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive,boost::serialization::nvp<A * const> >::save_only::invoke(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<A * const> & t={...}) Line 256 + 0xf C++ junkProject.exe!boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive,boost::serialization::nvp<A * const> >::invoke(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<A * const> & t={...}) Line 321 + 0xd C++ junkProject.exe!boost::archive::save<boost::archive::text_oarchive,boost::serialization::nvp<A * const> >(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<A * const> & t={...}) Line 535 + 0xd C++ junkProject.exe!boost::archive::basic_text_oarchive<boost::archive::text_oarchive>::save_override<boost::serialization::nvp<A * const> const >() Line 78 + 0x15 C++ junkProject.exe!boost::archive::detail::interface_oarchive<boost::archive::text_oarchive>::operator<<<boost::serialization::nvp<A * const> const >() Line 86 C++ junkProject.exe!boost::serialization::stl::save_collection<boost::archive::text_oarchive,std::vector<A *,std::allocator<A *> > >(boost::archive::text_oarchive & ar={...}, const std::vector<A *,std::allocator<A *> > & s={...}) Line 44 C++ junkProject.exe!boost::serialization::save<boost::archive::text_oarchive,A *,std::allocator<A *> >(boost::archive::text_oarchive & ar={...}, const std::vector<A *,std::allocator<A *> > & t={...}, const unsigned int __formal=0) Line 49 + 0xd C++ junkProject.exe!boost::serialization::free_saver<boost::archive::text_oarchive,std::vector<A *,std::allocator<A *> > >::invoke(boost::archive::text_oarchive & ar={...}, const std::vector<A *,std::allocator<A *> > & t={...}, const unsigned int file_version=0) Line 45 + 0x18 C++ junkProject.exe!boost::serialization::split_free<boost::archive::text_oarchive,std::vector<A *,std::allocator<A *> > >(boost::archive::text_oarchive & ar={...}, std::vector<A *,std::allocator<A *> > & t={...}, const unsigned int file_version=0) Line 74 + 0x11 C++ junkProject.exe!boost::serialization::serialize<boost::archive::text_oarchive,A *,std::allocator<A *> >(boost::archive::text_oarchive & ar={...}, std::vector<A *,std::allocator<A *> > & t={...}, const unsigned int file_version=0) Line 76 + 0x11 C++ junkProject.exe!boost::serialization::serialize_adl<boost::archive::text_oarchive,std::vector<A *,std::allocator<A *> > >(boost::archive::text_oarchive & ar={...}, std::vector<A *,std::allocator<A *> > & t={...}, const unsigned int file_version=0) Line 140 + 0x18 C++ junkProject.exe!boost::archive::detail::oserializer<boost::archive::text_oarchive,std::vector<A *,std::allocator<A *> > >::save_object_data(boost::archive::detail::basic_oarchive & ar={...}, const void * x=0x0012febc) Line 151 + 0x2b C++ junkProject.exe!boost::archive::detail::basic_oarchive_impl::save_object(boost::archive::detail::basic_oarchive & ar={...}, const void * t=0x0012febc, const boost::archive::detail::basic_oserializer & bos={...}) Line 271 C++ junkProject.exe!boost::archive::detail::basic_oarchive::save_object(const void * x=0x0012febc, const boost::archive::detail::basic_oserializer & bos={...}) Line 412 C++ junkProject.exe!boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive,std::vector<A *,std::allocator<A *> > >::save_standard::invoke(boost::archive::text_oarchive & ar={...}, const std::vector<A *,std::allocator<A *> > & t={...}) Line 264 C++ junkProject.exe!boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive,std::vector<A *,std::allocator<A *> > >::invoke(boost::archive::text_oarchive & ar={...}, const std::vector<A *,std::allocator<A *> > & t={...}) Line 321 + 0xd C++ junkProject.exe!boost::archive::save<boost::archive::text_oarchive,std::vector<A *,std::allocator<A *> > >(boost::archive::text_oarchive & ar={...}, const std::vector<A *,std::allocator<A *> > & t={...}) Line 535 + 0xd C++ junkProject.exe!boost::archive::basic_text_oarchive<boost::archive::text_oarchive>::save_override<std::vector<A *,std::allocator<A *> > const >() Line 78 + 0x15 C++ junkProject.exe!boost::archive::detail::interface_oarchive<boost::archive::text_oarchive>::operator<<<std::vector<A *,std::allocator<A *> > const >() Line 86 C++ junkProject.exe!boost::archive::detail::interface_oarchive<boost::archive::text_oarchive>::operator&<std::vector<A *,std::allocator<A *> > >(std::vector<A *,std::allocator<A *> > & t={...}) Line 97 C++ junkProject.exe!main() Line 65 C++ junkProject.exe!mainCRTStartup() Line 259 + 0x19 C kernel32.dll!7c816d4f() ntdll.dll!7c915b4f() kernel32.dll!7c8399f3() - David

3 2

Wave library fails to compile with VC7.1 - Buffer overrun in cl.exe
by Didier Malenfant 04 Dec '05

04 Dec '05

It seems like this was fixed by turning off the rtti for VC7.1 and I verified that both V1 and V2 jamfiles have the workaround line in them (not sure which one is getting used as I'm not passing any parameters for that) C:\work\boost_1_33_1>..\boost-jam-3.1.11-1-ntx86\bjam.exe "-sTOOLS=vc-7_1-stlport" "-sSTLPORT_PATH=.." "-sBUILD=<native-wchar_t>on" ****************************************************** Building Boost.Iostreams with bzip2 support disabled. To enable bzip2, consult the Boost.Iostreams documentation ****************************************************** ****************************************************** Building Boost.Iostreams with zlib and gzip support disabled. To enable zlib and gzip, consult the Boost.Iostreams documentation ****************************************************** Building Boost.Regex with the optional Unicode/ICU support disabled. Please refer to the Boost.Regex documentation for more information (and if you don't know what ICU is then you probably don't need it). ...found 11410 targets... ...updating 3 targets... vc-C++ bin\boost\libs\wave\build\libboost_wave.lib\vc-7_1-stlport\debug\native- wchar_t-on\threading-multi\instantiate_cpp_grammar.obj instantiate_cpp_grammar.cpp "cl" /Zm800 -nologo /EHsc -c -D_STLP_DEBUG=1 -D_STLP_DEBUG_UNINITIALIZED=1 -D_STLP_USE_DYNAMIC_LIB=1 /Z7 /Od /Ob0 /EHsc /GR /MDd /Op /wd4675 /Zc:forScope /Zc:wchar_t -I"bin\boost\libs\wave\build" -I"C:\work\boost_1_33_1" -I"..\STLport-4.6.2\stlport" -I"C:\work\boost_1_33_1" -Fo"bin\boost\libs\wave\build\libboost_wave.lib\vc-7_1-stlport\debug\nat ive-wchar_t-on\threading-multi\instantiate_cpp_grammar.obj" -Tp"C:\work\boost_1_33_1libs\wave\build\../src/instantiate_cpp_grammar.c pp" ...failed vc-C++ bin\boost\libs\wave\build\libboost_wave.lib\vc-7_1-stlport\debug\native- wchar_t-on\threading-multi\instantiate_cpp_grammar.obj... ...skipped <@boost!libs!wave!build\libboost_wave.lib\vc-7_1-stlport\debug\native-wc har_t-on\threading-multi>libboost_wave-vc71-mt-gdp-1_33_1.CMD for lack of <@boost!libs!wave!build\libboost_wave.lib\vc-7_1-stlport\debug\native-wc har_t-on\threading-multi>instantiate_cpp_grammar.obj... ...skipped <@boost!libs!wave!build\libboost_wave.lib\vc-7_1-stlport\debug\native-wc har_t-on\threading-multi>libboost_wave-vc71-mt-gdp-1_33_1.lib for lack of <@boost!libs!wave!build\libboost_wave.lib\vc-7_1-stlport\debug\native-wc har_t-on\threading-multi>instantiate_cpp_grammar.obj... ...failed updating 1 target... ...skipped 2 targets... I still get the buffer overrun in cl.exe. -D --- Didier 'Dids' Malenfant President Ready At Dawn Studios LLC www.readyatdawn.com <http://www.readyatdawn.com/>

2 3

Re: [Boost-users] [multi_index] Problem with find() and Hashed_Index
by JOAQUIN LOPEZ MU?Z 03 Dec '05

03 Dec '05

Hello Martin, ----- Mensaje original ----- De: Martin Higham <martinh(a)gmail.com> Fecha: Sábado, Diciembre 3, 2005 11:42 am Asunto: [Boost-users] [multi_index] Problem with find() and Hashed_Index > I have created a multi_index_container inline with one ordered_unique > index and one hashed_unique index as demonstrated in the > documentation > (http://www.boost.org/libs/multi_index/doc/advanced_topics.html#hash_lo okup).I can happily add and retrieve items using find() as indicated. > > However, if I use the =* operator as indicated and there is no > matching record a memory error occurs. > > Therefore I need to assign the find result to an iterator and check > for end(). Can anyone tell me what type this iterator should be? I've > tried many combinations non of which compile. There are several syntaxes to get to the type of the iterator: your_container_type::nth_index<N>::type::iterator your_container_type::index<Tag>::type::iterator your_container_type::nth_index_iterator<N>::type your_container_type::index_iterator<Tag>::type Where N is the 0-based ordinal of the index you're interested in. If the index is tagged, you can also use the <Tag> variations. Does this help? Thanks for using Boost.MultiIndex! Joaquín M López Muñoz Telefónica, Investigación y Desarrollo

1 0

How to build Boost on Visual Studio .NET 2003?
by Mingjun Huang 03 Dec '05

03 Dec '05

Hello, I am a newbie for Boost. Could anyone give me some directions on how to build boost on my PC with Visual Studio .NET 2003 installed? Thanks a lot! Best, -Mingjun

4 3

cannot resolve shared_ptr calls
by Steven Solie 03 Dec '05

03 Dec '05

I don't understand why the following program doesn't compile when using smart_ptr but works fine with raw pointers: #include <boost/shared_ptr.hpp> class Base { public: virtual ~Base() {}; }; class Base1 : public Base { public: virtual ~Base1() {}; }; class Base2 : public Base { public: virtual ~Base2() {}; }; class Derived1 : public Base1 {}; class Derived2 : public Base2 {}; typedef boost::shared_ptr<Base> BasePtr; typedef boost::shared_ptr<Base1> Base1Ptr; typedef boost::shared_ptr<Base2> Base2Ptr; typedef boost::shared_ptr<Derived1> Derived1Ptr; typedef boost::shared_ptr<Derived2> Derived2Ptr; void f(BasePtr ptr) {} void f(Base1Ptr ptr) {} void f(Base2Ptr ptr) {} int main() { Derived1Ptr d1(new Derived1); Derived2Ptr d2(new Derived2); f(d1); f(d2); } I see the following compile errors with GCC 3.4.4: smart-test.cpp: In function `int main()': smart-test.cpp:24: error: call of overloaded `f(Derived1Ptr&)' is ambiguous smart-test.cpp:15: note: candidates are: void f(BasePtr) smart-test.cpp:16: note: void f(Base1Ptr) smart-test.cpp:17: note: void f(Base2Ptr) smart-test.cpp:25: error: call of overloaded `f(Derived2Ptr&)' is ambiguous smart-test.cpp:15: note: candidates are: void f(BasePtr) smart-test.cpp:16: note: void f(Base1Ptr) smart-test.cpp:17: note: void f(Base2Ptr) If I remove the extra layer of inheritance it works as it should. #include <boost/shared_ptr.hpp> class Base { public: virtual ~Base() {}; }; class Derived1 : public Base {}; class Derived2 : public Base {}; typedef boost::shared_ptr<Base> BasePtr; typedef boost::shared_ptr<Derived1> Derived1Ptr; typedef boost::shared_ptr<Derived2> Derived2Ptr; void f(BasePtr ptr) {} int main() { Derived1Ptr d1(new Derived1); Derived2Ptr d2(new Derived2); f(d1); f(d2); } As I said earlier, doing the same with raw pointers resolves things as would be expected in both cases. Any ideas? --Steven

2 1

[multi_index] Problem with find() and Hashed_Index
by Martin Higham 03 Dec '05

03 Dec '05

I have created a multi_index_container inline with one ordered_unique index and one hashed_unique index as demonstrated in the documentation (http://www.boost.org/libs/multi_index/doc/advanced_topics.html#hash_lookup) I can happily add and retrieve items using find() as indicated. However, if I use the =* operator as indicated and there is no matching record a memory error occurs. Therefore I need to assign the find result to an iterator and check for end(). Can anyone tell me what type this iterator should be? I've tried many combinations non of which compile. I am using Boost v1.33.0 with Darwin gcc 4.0.1 Thanks Martin

1 0

[string_algo] find_head/find_tail additions
by Yuval Ronen 03 Dec '05

03 Dec '05

Hi. I have a feature I would like to see in the string algo library. The present find_head function gets an unsigned int N and returns the head of the input string with size is at most N. I would like another option that will return the head of the input with size at most original_size minus N. In other words, all the string without the last N characters. if original_size < N the return would be an empty string. The interface for such a functionality might introduce a new function (find_head_but()?), or make the present find_head function accept a signed int N, instead of unsigned int, with a negetive number indicates the new functionality. And of course the same for find_tail. Thanks, Yuval

3 8

Boost Review Wizard's Report: December 1, 2005
by Ronald Garcia 02 Dec '05

02 Dec '05

Review Wizard Status Report Tom Brinkman Ronald Garcia 1) News 2) Review Managers Needed 3) Review Queue 4) Libraries under development //////////////////////////////////////////////////////////////////// 1) News //////////////////////////////////////////////////////////////////// Ronald Garcia has signed on as co-wizard to assist Tom Brinkman. Feel free to contact either of us with questions or review requests. Output Formatters, Singleton, and Interfaces have been removed from the review queue. Reece Dunn, Jason Hise, and Jonathan Turkanis, the respective library authors, do not currently have the time to make the changes necessary prior to a review. We hope to see these libraries updated and resubmitted some time in the not too distant future. We need review managers. Please take a look at the list of libraries in need of managers and check out their descriptions. If you can serve as review manager for any of them, send one of us an email. Note: If you have any suggestions about how we could improve the Review Wizard's status report or if we have forgotten anything, please email "reportbase at gmail dot com" and "garcia at cs dot indiana dot edu". //////////////////////////////////////////////////////////////////// 2) Review Managers Needed //////////////////////////////////////////////////////////////////// There are a few libraries in the review queue in need of review managers. If you would like to volunteer to be a review manager, please contact Ron or Tom. The following libraries still require review manager volunteers: Fixed Strings Intrusive Containers Singleton (Re-review) Fusion Shmem Type Traits (modification) //////////////////////////////////////////////////////////////////// 3) Review Queue //////////////////////////////////////////////////////////////////// asio - December 10 2005 - December 24 2005 Policy Pointer Fixed Strings Intrusive Containers Function Types (mini-re-review) Fusion Shmem Type_Traits asio Author - Christopher Kohlhoff Review Manager - Jeff Garland Download: http://asio.sourceforge.net/ Description: asio is a cross-platform C++ library for network programming that provides developers with a consistent asynchronous I/O model using a modern C++ approach. To use asio's SSL support, OpenSSL is required. OpenSSL is not necessary to use the rest of asio. asio consists only of header files, and so there is no need to build any libraries before using asio in your own applications. asio supports the following platforms and compilers: Win32 using Visual C++ 7.1 and Visual C++ 8.0. Win32 using Borland C++Builder 6 patch 4. Win32 using MinGW. Linux (2.4 or 2.6 kernels) using g++ 3.3 or later. Solaris using g++ 3.3 or later. Mac OS X 10.4 using g++ 3.3 or later. Type_Traits (modification) Author - Alexander Nasonov Review Manager - To be determined Download : You can download it from http://cpp-experiment.sourceforge.net/promote-20050917.tar.gz or browse it online http://cpp-experiment.sourceforge.net/promote-20050917/ Description: Proposal to add promote, integral_promotion and floating_point_promotion class templates to type_traits library. Alexander tried it on different compilers with various success: GNU/Linux (gentoo-hardened): gcc 3.3 and 3.4, Intel 7, 8 and 9 Windows: VC7 free compiler Sparc Solaris: Sun C++ 5.3 and 5.7 See comments at the beginning of promote_enum_test.cpp for what is broken. http://cpp-experiment.sourceforge.net/promote-20050917/libs/ type_traits/test/promote_enum_test.cpp Alexandar used to compile tests on VC6 and I'm pretty sure I can add workarounds if someone is still interested. Actually, it compiled the tests better then VC7. As for Borland 5.5, is_enum is broken and I don't see any reason to support this compiler. Alexandar requests a fast-track review. Policy Pointer Author - David Held & Jonathan Turkanis Review Manager - Gennadiy Rozenthal Download: Boost Sandbox (http://boost-sandbox.sourceforge.net/) under policy_ptr Description: Smart pointers are used to automate memory management by handling the deletion of dynamically allcoated objects (and other resources). They assist in ensuring program correctness, exception safety, and memory integrity. Policy Pointer is a policy-based smart pointer framework designed to accomodate the large number of smart pointer designs. Through the use of policy classes, virtually any smart pointer type can be constructed within this framework. This library is a Boostification of the original Loki::SmartPtr type with significant modifications. Fixed Strings Author - Reece Dunn Review Manager - to be determined Download: Boost Sandbox (http://boost-sandbox.sourceforge.net/) under fixed_string Description: The fixed string library provides buffer overrun protection for static sized strings (char s[ n ]). It provides a C-style string interface for compatibility with C code (for example, porting a C program to C++). There is also a std::string-style interface using a class based on flex_string by Andre Alexandrescu with a few limitations due to the non-resizable nature of the class. Intrusive Containers Author - Olaf Krzikalla Review Manager - to be determined Download: http://people.freenet.de/turtle++/intrusive.zip Description: While intrusive containers were and are widely used in C, they became more and more forgotten in the C++-world due to the presence of the standard containers, which don't support intrusive techniques. Boost.Intrusive not only reintroduces this technique to C++, but also encapsulates the implementation in STL-like interfaces. Hence anyone familiar with standard containers can use intrusive containers with ease. Function Types (mini-re-review) Author - Tobias Schwinger Review Manager - John Maddock Download: http://boost-sandbox.sourceforge.net/vault/ Description: This library provides a metaprogramming facility to classify, decompose and synthesize function-, function pointer-, function reference- and member function pointer types. For the purpose of this documentation, these types are collectively referred to as function types (this differs from the standard definition and redefines the term from a programmer's perspective to refer to the most common types that involve functions). The classes introduced by this library shall conform to the concepts of the Boost Metaprogramming library (MPL). The Function Types library enables the user to: * test an arbitrary type for being a function type of specified kind, * inspect properties of function types, * view and modify sub types of an encapsulated function type with MPL Sequence operations, and * synthesize function types. This library supports variadic functions and can be configured to support non-default calling conventions. Shmem Author - Ion Gaztanaga Review Manager - to be determined Download: Boost Sandbox Vault -> Memory (http://boost-sandbox.sourceforge.net/vault/index.php? direction=0&order=&directory=Memory) http://ice.prohosting.com/newfunk/boost/libs/shmem/doc/html/index.html Description: Shmem offers tools to symplify shared memory usage in applications. These include shared memory creation/destruction and synchronization objects. It also implements dynamic allocation of portions of a shared memory segment and an easy way to construct C++ objects in shared memory. Apart from this, Shmem implements a wide range of STL-like containers and allocators that can be safely placed in shared memory, helpful to implement complex shared memory data-bases and other efficient inter-process communications. Fusion Author - Joel de Guzman Review Manager - to be determined Download: http://spirit.sourceforge.net/dl_more/fusion_v2/ Description: Fusion is a library of heterogenous containers and views and algorithms. A set of heterogenous containers (vector, list, set and map) is provided out of the box along with view classes that present various composable views over the data. The containers and views follow a common sequence concept with an underlying iterator concept that binds it all together, suitably making the algorithms fully generic over all sequence types. The architecture is somewhat modeled after MPL which in turn is modeled after STL. It is code-named "fusion" because the library is the "fusion" of compile time metaprogramming with runtime programming. //////////////////////////////////////////////////////////////////// 4) Libraries under development //////////////////////////////////////////////////////////////////// Please let us know of any libraries you are currently developing that you intend to submit for review. Output Formatters Singleton Interfaces Output Formatters Author - Reece Dunn Download: Boost Sandbox (http://boost-sandbox.sourceforge.net/) under outfmt Description: The I/O formatters library provides an easy and customizable way to input/output arrays, STL arrays, STL collections, sub-arrays from/to STL streams. It allows you to configure how each element in such an array will be written to the stream or read from the stream, while providing reasonable defaults. Singleton Author - Jason Hise Download: http://tinyurl.com/6qvrd (old version from previous review) Description: Singleton is feature rich library: - ensuring single instance of a class and global access point to this instance - with policies specifying: - when the instance gets created (manually, immediatelly, when first used, ...) - how is the instance created (by new, malloc, in static memory, ...) - when the instance gets destroyed (never, by priority, after another singleton, ...) Parametrized singleton called Multiton is provided City::pointer p1("Chicago"); City::pointer p2("Brussels"); will create two different "singletons" of the same type. Another feature is ability to register resources (like shared pointer) who will get destroyed in controlled order, when the application exits. Not yet implemented features are: - MT safety - self-destroying singleton with timeout - bjam compatible tests The library is known to work with several newer compilers, VC7.1 among them. Help with other compilers is welcomed. Interfaces Author - Jonathan Turkanis Download: http://www.kangaroologic.com/interfaces Description: Interfaces provides a macro-based Interface Definition Language (IDL) which can be used to define C++ class types called interfaces. An interface is a lightweight value type associated with a set of named function signatures. An interface instance can be bound at runtime to any object which implements the interface, i.e., to any object of a type with accessible non-static member functions having the same name and signature as the set of functions associated with the interface. The functions of the bound object can then be invoked through the interface instance using the 'dot' operator. Binding is completely non-intrusive: the object's type need not declare any virtual functions or derive from any particluar base class. Current applications of Boost.Interfaces include: * Non-intrusive dynamic polymorphism: interfaces can often be used in place of abstract base classes, and are sometimes much faster (see Performance). * Dynamic inheritance: allows function calls to be forwarded automatically to an object specified at runtime (see Delegation). * Smart Interface Pointers: smart pointers which can manage the lifetime of any object whose type implements a given interface. * Smart References: like smart interface pointers, but the managed object is accessed using the "dot" operator." Tom Brinkman Ronald Garcia Boost Review Wizards

4 5

Re: [Boost-users] Serialization of ptr_container
by sui tam 02 Dec '05

02 Dec '05

Hi, This is an inquiry to a previous message. Does that mean the serializaion call to the archive: ar & container; typedef container std::vector<container_type *> container_list; will not work? --------------------------------- Yahoo! Personals Let fate take it's course directly to your email. See who's waiting for you Yahoo! Personals

1 0

regex and matchresults
by Tobi 02 Dec '05

02 Dec '05

Hello, this is my my first post to a newsgroup, so i hope it will work... I use the boost regex library, and i was wondereing, why the following code doesn't work. When i output the result of the match, it should output "a", but it didn't, the output was something wrong like "yl". I figured out, that the reasen for this is, that the string sSearchString is just in the scope of the try-block, so it is allready destroyed when i do the output. If i put the declaration of the string above the try block, all works fine, because the searchstring is still existing when i do the output. The matchresult seems to save just a reference to the string. Am i doing sth wrong? I think this is quite dangerous, or is there a way to do this more safe? Thanx, Tobi /////////////////////////////////////////// boost::smatch match; // Match-Ergebnis bool bMatched; try { // Regulaeren Ausdruck anlegen boost::regex sExpr; sExpr.assign( "." ); // Suchstring anlegen std::string sSearchString = "abcdef"; // Matchen bMatched = boost::regex_search(sSearchString,match,sExpr); } catch(runtime_error& er) { m_sLog = er.what(); return; } if( bMatched ) { cout << match[0] << endl; } ///////////////////////////////////////////

2 1

MingW bug
by Andre Tampubolon 02 Dec '05

02 Dec '05

This is my first Boost program #include <iostream> #include <cstdlib> #include <boost\random.hpp> using namespace std; using namespace boost; typedef boost::mt19937 BaseGenerator; typedef boost::uniform_real<double> Distribution; typedef boost::variate_generator<BaseGenerator,Distribution> Generator; double boostDoubleRand() { static BaseGenerator base; static Distribution dist; static Generator rng(base,dist); return rng(); } int main() { cout << "expect 5 numbers within the interval [0,1)" << endl; for (int i = 0; i < 5; i++) { cout << boostDoubleRand() << "\n"; } cout << endl; return 0; } Compiled using Borland C++ 5.6.4 and it works well. But when I compile it using MingW GCC, it only prints "expect 5 numbers within the interval [0,1)" and not the 5 random numbers. Why ? --------------------------------- Yahoo! FareChase - Search multiple travel sites in one click.

2 4

trying to use Boost.Program_options
by Chen Jiusheng 02 Dec '05

02 Dec '05

Hi Boost_UsersAll, I am trying to compile "...\libs\program_options\example\first.cpp" with VC6.0(sp6) and when I do it I get the following errors. I am sure that Boost1.33.0 has been successfully installed on my Windows XP machine. Any ideas/suggestions would be very helpful! 　　　　　　　　Best regards！ ///////////////////////////////////////////////////////////////////////////////////// d:\work\algos\boost\boost_1_33_0\boost\program_options\options_description.hpp(156) : error C2258: illegal pure syntax, must be '= 0' d:\work\algos\boost\boost_1_33_0\boost\program_options\options_description.hpp(156) : error C2252: 'm_default_line_length' : pure specifier can only be specified for functions d:\work\algos\boost\boost_1_33_0\boost\program_options\options_description.hpp(159) : error C2065: 'm_default_line_length' : undeclared identifier d:\work\mfa\codes\libcleml_1.0.1\mfa_tests\first.cpp(27) : error C2660: 'parse_command_line' : function does not take 3 parameters d:\work\mfa\codes\libcleml_1.0.1\mfa_tests\first.cpp(37) : fatal error C1903: unable to recover from previous error(s); stopping compilation Error executing cl.exe. first.obj - 5 error(s), 0 warning(s)

2 1

demo.cpp
by sui tam 02 Dec '05

02 Dec '05

I have successfully compiled the program, However, when I try linking the program, I get the errors: msvcprt.lib(MSVCP60.dll) : error LNK2005: "[Entry] public: bool _cdel std::ios_base::faile(void) const "(.?fail@ios_base@std@@QEBA_NXZ) already defined in library.lib (text_iarchive.obj); and couple of more similiar link errors. How can I fix it? --------------------------------- Yahoo! Personals Single? There's someone we'd like you to meet. Lots of someones, actually. Yahoo! Personals

1 0

demo.cpp
by sui tam 02 Dec '05

02 Dec '05

I have successfully compiled the program, However, when I try linking the program, I get the errors: msvcprt.lib(MSVCP60.dll) : error LNK2005: "[Entry] public: bool _cdel std::ios_base::faile(void) const "(.?fail@ios_base@std@@QEBA_NXZ) already defined in library.lib (text_iarchive.obj); and couple of more similiar link errors. How --------------------------------- Yahoo! Personals Skip the bars and set-ups and start using Yahoo! Personals for free

1 0

I have compilation error as follows:
by sui tam 02 Dec '05

02 Dec '05

compilation error: boost/serialization/access.hpp(123): error: no default constructor exists for class "A" Do I need to change anything in the class at all? Also what are the meanings of these compilation error: boost/serialization/access.hpp(109) error: incomplete type is not allowed. boost/serialization/access.hpp(109) error: expression must have class type __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

1 0

Re: [Boost-users] serialize - C structure within a class
by sui tam 02 Dec '05

02 Dec '05

I have a class that is using a C struct, when I use the serialization code: typdef struct A { template <class Archive> void serialize( Archive & ar, ) { ar & a1; ar & a2; } type1 a1; type2 a2; } I get error A.h(59): error: this declaration may not have extern "C" linkage template<class Archive> How can I archive this C structure which the class referenced? --------------------------------- Yahoo! Personals Single? There's someone we'd like you to meet. Lots of someones, actually. Try Yahoo! Personals

2 1

[Test] BOOST_CHECK() -> unknown location(0) when an exception is thrown...
by Kevin Wheatley 01 Dec '05

01 Dec '05

Hi, I have a test where BOOST_CHECK() results in a call that causes an exception, but it gives no location, would it be possible to change the reporting code that catches the exception to report the file and line number to give me 1 click navigation to the site of the calling test? Perhaps the macro could force a check point or something and then log_exception could use that? I'm using BOOST_AUTO_TEST_MAIN as the driver for the tests with BOOST_AUTO_TEST_CASE "functions" Thanks Kevin -- | Kevin Wheatley, Cinesite (Europe) Ltd | Nobody thinks this | | Senior Technology | My employer for certain | | And Network Systems Architect | Not even myself |

2 1

[Serialization] Use of BOOST_SERIALIZATION_NVP needs clarification
by Peter Whaite 01 Dec '05

01 Dec '05

I just started using the serialization library and it is very useful. However the minimal documentation for xml archives in the "List of Examples" could be clearer. Right now it says... demo_xml.cpp This is a variation the original demo which supports xml archives in addition to the others. The extra wrapping macros are needed to associate a data item name with the correspoding xml tag. For more information see Name-Value Pairs. Here is what an xml archive looks like. It would help if the "extra wrapping macros" are named. Yes you can figure it out from demo_xml.cpp (well there's only BOOST_SERIALIZATION_NVP in there) and from the "Name-Value Pairs" page, but that is too much jumping around for a first read. But what would help more is a warning that BOOST_SERIALIZATION_NVP must wrap a valid xml tag. For example I naively thought: void editor::save() { ... ar << BOOST_SERIALIZATION_NVP(*this); } would work, but of course it doesnt because "*this" is not a valid xml tag. I searched the list archives, and I'm not the only one who fell into this trap. I suggest adding something like this ... The extra wrapping macro, BOOST_SERIALIZATION_NVP(name), is needed to associate a data item name with the corresponding xml tag. It is importanted that 'name' be a valid xml tag, else it will be impossible to restore the archive. For more information... The warning should be repeated in wrappers.html#nvp, and in the comments in demo_xml.cpp. --- Peter Whaite

1 0

Looking for is_base_of
by Dave 01 Dec '05

01 Dec '05

Hello all, For the life of me, I cannot find is_base_of<>. What header files / namespaces do I need to reference to get at this little guy? Actually, I'm starting to think it has been replaced and that I should be looking for something else... Thanks, Dave

3 2

[Boost.Format] empty string argument causes VC 8.0 to assert
by Mick Hollins 01 Dec '05

01 Dec '05

The following code causes a runtime assertion in VC 8.0: std::string l_param; std::string l_str = (boost::format("here is an empty string: %1%") % l_param).str(); It passes an empty string argument to boost::format. The assert is inside the implementation of basic_string::append() and boils down to the fact that the implementation of boost::format ends up calling basic_string::append(const char *, size_type) with a null pointer, which causes basic_string::append to assert. The following sample code causes the same assertion without boost::format being involved: std::string l_str; const char *l_null = NULL; std::string::size_type l_size = 0; l_str.append(l_null, l_size); // causes an assert I have currently disabled the assertion by calling the following code before I do anything else: #if _MSC_VER >= 1400 _CrtSetReportMode( _CRT_ASSERT, _CRTDBG_MODE_FILE); _CrtSetReportFile( _CRT_ASSERT, _CRTDBG_FILE_STDERR ); #endif which causes the asserts to simply emit a message to stderr rather than to pop up a message box, but I don't really want to disable VC 8.0's assertions across the board. My questions are: 1) Is this considered to be a bug in boost::format or a case of VC 8.0's runtime checks being overzealous? Personally I feel that calling append(null, 0) should be allowed and VC 8.0 is being too protective, but the copy of the C++ standard I have suggests that VC 8.0 is correct. 2) Either way, what do people think is the best way forward? thanks, mick

3 3

The problem about shorthest path computation
by liu jianfei 01 Dec '05

01 Dec '05

Hi, all Recently, I faced a big problem when I'm using the boost function of shorthest path computing including dijkstra_shortest_paths and johnson_all_pairs_shortest_paths. My projectet was that I extracted all the surface voxels of a volume as the vertexs of the graph, and 26-connection between them as a edge. Hence, I got a large sparse graph which composed of 12768 vertexs and around 86000 edges. In the next stage, I implemented the dijkstra_shortest_paths computation for each vertex. However, it succeded in some points and failed in other points. If I changed the weight of each edge into 1, all points worked. If I used other weights for different edges, then problem poped up. Also, some points worked for this special weight, and failed for others. I think the shortest path algorithm should be unrelated with the weight assignment. Initially, I think something was wrong in my graph buliding. But when I wrote the shorthest path algorithm by myself and all points worked, I felt there may be a bug in dijkstra_shortest_paths class. If someone else faces the same problem, feel free to tell me. If not, I'm willing to paste my graph code in spite of its complexity. Thanks Regards!

2 1

Compilation difference between intel 9.0 and msvc 7.1 regarding const
by Chris Goller 30 Nov '05

30 Nov '05

I have code that will compile using msvc 7.1 but will not under intel 9.0. Here is some simplified code to illustrate my problem: using namespace boost; using namespace std; typedef array<int, 2> array_type; array_type a; a[0] = 0; a[1] = 1; vector<array_type> v; v.push_back(a); vector<int> h; for_each(v.begin(), v.end(), mem_fun_ref(&array_type::front)); This compiles and runs using msvc 7.1, but intel 9.0 errors with the following: error: more than one instance of overloaded function "mem_fun_ref" matches the argument list: function template "std::mem_fun_ref(_Result (_Ty::*)() const)" function template "std::mem_fun_ref(_Result (_Ty::*)())" argument types are: (<unknown-type>) Here are the two definitions of front for boost::array: reference front() { return elems[0]; } const_reference front() const { return elems[0]; } If I'm reading the error correctly, this means that the intel compiler doesn't know if I want to use the const or non-const version of front. Does anyone know anything about this? Is this the forwarding problem? Is a function wrapper around front a good solution? What are the solutions? Thanks, Chris

3 4

[Boost.Iostream] missing BOOST_IOSTREAMS_DECL in mapped_file.hpp
by Marc Viala 30 Nov '05

30 Nov '05

Hi, I'm not really sure but I think there are some missing export declarations in the "mapped_file.hpp" of Boost.Iostream. The missing declarations are for the struct mapped_file_sink and the class mapped_file. I've joined the corrected "mapped_file.hpp" Could you confirm these observations? Marc Viala

3 3

Re: [Boost-users] Overload problem with bind
by Kerner, Jacques 30 Nov '05

30 Nov '05

Okay, just to nail it down : - boost::bind does not generate the error and you don't need to cast the function pointer whereas - boost::lambda::bind needs you to explicitely cast the function pointer Thank you! Jacques. -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Bruno Martínez Sent: Tuesday, November 29, 2005 11:03 AM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] Overload problem with bind On Tue, 29 Nov 2005 16:45:17 -0200, Noel Yap <noel.yap(a)gmail.com> wrote: > IIRC, I've had to play around with static_cast<> to work around these > issues. Alternatively, you could assign the member function address > to a local variable. > > My wild guess is that, at the time the compiler is parsing > &Position::GetX, it doesn't have enough information to decide which > one to use. Yes. This works: boost::lambda::bind( static_cast<float& (Position::*)() > (&Position::GetX), boost::ref(myPos)); Also, boost::bind doesn't seem to have this problem. There was a recent thread about this feature, by Peter Dimov and John Maddock, IIRC. Bruno > On 11/29/05, Kerner, Jacques <jkerner(a)ea.com> wrote: >> Hi, >> >> The following test generates an error : >> >> >> >> class Position >> { >> const float & GetX() const {...} >> float & GetX() {...} >> }; >> >> Position myPos; >> bind( &Position::GetX, ref(myPos) ) // <- does not compile >> >> >> >> >> How can I avoid these ? : (with MSVC 7.1) >> >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<10,boost::lambda::function_action<10,Result>>,detail:: >> bin d_tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const >> Arg5,const Arg6,const Arg7,const Arg8,const Arg9,const Arg10>::type>> >> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 >> &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &,const Arg9 >> &,const Arg10 &)' : expects 10 arguments - 2 provided >> ..\..\boost\lambda\detail\bind_functions.hpp(1743) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const >> Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const >> Arg8,const Arg9,const Arg10>::type>> boost::lambda::bind(const Arg1 >> &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 >> &,const >> Arg7 &,const Arg8 &,const Arg9 &,const Arg10 &)' : expects 10 >> arguments >> - 2 provided >> with >> [ >> Arity=10, >> Act=boost::lambda::function_action<10> >> ] >> ..\..\boost\lambda\detail\bind_functions.hpp(1710) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<10,boost::lambda::function_action<10,Result>>,detail:: >> bin >> d_tuple_mapper<Result(__cdecl >> &)(Par1,Par2,Par3,Par4,Par5,Par6,Par7,Par8,Par9),const Arg2,const >> Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8,const >> Arg9,const Arg10>::type>> boost::lambda::bind(Result (__cdecl >> &)(Par1,Par2,Par3,Par4,Par5,Par6,Par7,Par8,Par9),const Arg2 &,const >> Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 >> &,const >> Arg9 &,const Arg10 &)' : expects 10 arguments - 2 provided >> ..\..\boost\lambda\detail\bind_functions.hpp(1673) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<9,boost::lambda::function_action<9,Result>>,detail::bi >> nd_ tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const >> Arg5,const Arg6,const Arg7,const Arg8,const Arg9>::type>> >> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 >> &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &,const Arg9 &)' : >> expects 9 arguments - 2 provided >> ..\..\boost\lambda\detail\bind_functions.hpp(1526) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const >> Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const >> Arg8,const Arg9>::type>> boost::lambda::bind(const Arg1 &,const Arg2 >> &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 >> &,const >> Arg8 &,const Arg9 &)' : expects 9 arguments - 2 provided >> with >> [ >> Arity=9, >> Act=boost::lambda::function_action<9> >> ] >> ..\..\boost\lambda\detail\bind_functions.hpp(1494) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<9,boost::lambda::function_action<9,Result>>,detail::bi >> nd_ >> tuple_mapper<Result(__cdecl >> &)(Par1,Par2,Par3,Par4,Par5,Par6,Par7,Par8),const Arg2,const >> Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8,const >> Arg9>::type>> boost::lambda::bind(Result (__cdecl >> &)(Par1,Par2,Par3,Par4,Par5,Par6,Par7,Par8),const Arg2 &,const Arg3 >> &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 >> &,const >> Arg9 &)' : expects 9 arguments - 2 provided >> ..\..\boost\lambda\detail\bind_functions.hpp(1458) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<8,boost::lambda::function_action<8,Result>>,detail::bi >> nd_ tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const >> Arg5,const Arg6,const Arg7,const Arg8>::type>> >> boost::lambda::bind(const >> Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 >> &,const Arg7 &,const Arg8 &)' : expects 8 arguments - 2 provided >> ..\..\boost\lambda\detail\bind_functions.hpp(1322) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const >> Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const >> Arg8>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const >> Arg8>Arg3 >> &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &)' : >> expects 8 arguments - 2 provided >> with >> [ >> Arity=8, >> Act=boost::lambda::function_action<8> >> ] >> ..\..\boost\lambda\detail\bind_functions.hpp(1291) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<8,boost::lambda::function_action<8,Result>>,detail::bi >> nd_ tuple_mapper<Result(__cdecl >> &)(Par1,Par2,Par3,Par4,Par5,Par6,Par7),const >> Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const >> Arg8>::type>> boost::lambda::bind(Result (__cdecl >> &)(Par1,Par2,Par3,Par4,Par5,Par6,Par7),const Arg2 &,const Arg3 >> &,const >> Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &)' : >> expects 8 arguments - 2 provided >> ..\..\boost\lambda\detail\bind_functions.hpp(1257) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<7,boost::lambda::function_action<7,Result>>,detail::bi >> nd_ tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const >> Arg5,const Arg6,const Arg7>::type>> boost::lambda::bind(const Arg1 >> &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 >> &,const >> Arg7 &)' : expects 7 arguments - 2 provided >> ..\..\boost\lambda\detail\bind_functions.hpp(1123) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const >> Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7>::type>> >> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 >> &,const Arg5 &,const Arg6 &,const Arg7 &)' : expects 7 arguments - 2 >> provided >> with >> [ >> Arity=7, >> Act=boost::lambda::function_action<7> >> ] >> ..\..\boost\lambda\detail\bind_functions.hpp(1092) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<7,boost::lambda::function_action<7,Result>>,detail::bi >> nd_ tuple_mapper<Result(__cdecl >> &)(Par1,Par2,Par3,Par4,Par5,Par6),const >> Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7>::type>> >> boost::lambda::bind(Result (__cdecl >> &)(Par1,Par2,Par3,Par4,Par5,Par6),const Arg2 &,const Arg3 &,const >> Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &)' : expects 7 arguments >> - 2 provided >> ..\..\boost\lambda\detail\bind_functions.hpp(1058) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<6,boost::lambda::function_action<6,Result>>,detail::bi >> nd_ tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const >> Arg5,const Arg6>::type>> boost::lambda::bind(const Arg1 &,const Arg2 >> &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &)' : expects 6 >> arguments - 2 provided >> ..\..\boost\lambda\detail\bind_functions.hpp(927) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const >> Arg2,const Arg3,const Arg4,const Arg5,const Arg6>::type>> >> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 >> &,const Arg5 &,const Arg6 &)' : expects 6 arguments - 2 provided >> with >> [ >> Arity=6, >> Act=boost::lambda::function_action<6> >> ] >> ..\..\boost\lambda\detail\bind_functions.hpp(899) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<6,boost::lambda::function_action<6,Result>>,detail::bi >> nd_ tuple_mapper<Result(__cdecl &)(Par1,Par2,Par3,Par4,Par5),const >> Arg2,const Arg3,const Arg4,const Arg5,const Arg6>::type>> >> boost::lambda::bind(Result (__cdecl >> &)(Par1,Par2,Par3,Par4,Par5),const >> Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &)' : >> expects 6 arguments - 2 provided >> ..\..\boost\lambda\detail\bind_functions.hpp(867) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<5,boost::lambda::function_action<5,Result>>,detail::bi >> nd_ tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const >> Arg5>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const >> Arg5>Arg3 >> &,const Arg4 &,const Arg5 &)' : expects 5 arguments - 2 provided >> ..\..\boost\lambda\detail\bind_functions.hpp(738) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const >> Arg2,const Arg3,const Arg4,const Arg5>::type>> >> boost::lambda::bind(const >> Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &)' : >> expects 5 arguments - 2 provided >> with >> [ >> Arity=5, >> Act=boost::lambda::function_action<5> >> ] >> ..\..\boost\lambda\detail\bind_functions.hpp(710) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<5,boost::lambda::function_action<5,Result>>,detail::bi >> nd_ tuple_mapper<Result(__cdecl &)(Par1,Par2,Par3,Par4),const >> Arg2,const Arg3,const Arg4,const Arg5>::type>> >> boost::lambda::bind(Result (__cdecl &)(Par1,Par2,Par3,Par4),const >> Arg2 &,const Arg3 &,const Arg4 &,const >> Arg5 &)' : expects 5 arguments - 2 provided >> ..\..\boost\lambda\detail\bind_functions.hpp(679) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<4,boost::lambda::function_action<4,Result>>,detail::bi >> nd_ tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4>::type>> >> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 >> &)' : expects 4 arguments - 2 provided >> ..\..\boost\lambda\detail\bind_functions.hpp(558) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const >> Arg2,const Arg3,const Arg4>::type>> boost::lambda::bind(const Arg1 >> &,const Arg2 &,const Arg3 &,const Arg4 &)' : expects 4 arguments - 2 >> provided >> with >> [ >> Arity=4, >> Act=boost::lambda::function_action<4> >> ] >> ..\..\boost\lambda\detail\bind_functions.hpp(532) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<4,boost::lambda::function_action<4,Result>>,detail::bi >> nd_ tuple_mapper<Result(__cdecl &)(Par1,Par2,Par3),const Arg2,const >> Arg3,const Arg4>::type>> boost::lambda::bind(Result (__cdecl >> &)(Par1,Par2,Par3),const Arg2 &,const Arg3 &,const Arg4 &)' : expects >> 4 arguments - 2 provided >> ..\..\boost\lambda\detail\bind_functions.hpp(503) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<3,boost::lambda::function_action<3,Result>>,detail::bi >> nd_ tuple_mapper<const Arg1,const Arg2,const Arg3>::type>> >> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &)' : >> expects 3 arguments - 2 provided >> ..\..\boost\lambda\detail\bind_functions.hpp(387) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const >> Arg2,const Arg3>::type>> boost::lambda::bind(const Arg1 &,const Arg2 >> &,const Arg3 &)' : expects 3 arguments - 2 provided >> with >> [ >> Arity=3, >> Act=boost::lambda::function_action<3> >> ] >> ..\..\boost\lambda\detail\bind_functions.hpp(361) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<3,boost::lambda::function_action<3,Result>>,detail::bi >> nd_ tuple_mapper<Result(__cdecl &)(Par1,Par2),const Arg2,const >> Arg3>::type>> boost::lambda::bind(Result (__cdecl &)(Par1,Par2),const >> Arg2 &,const >> Arg3 &)' : expects 3 arguments - 2 provided >> ..\..\boost\lambda\detail\bind_functions.hpp(333) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2784: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<2,boost::lambda::function_action<2,Result>>,detail::bi >> nd_ tuple_mapper<const Arg1,const Arg2>::type>> >> boost::lambda::bind(const >> Arg1 &,const Arg2 &)' : could not deduce template argument for >> 'overloaded function type' from 'overloaded function type' >> ..\..\boost\lambda\detail\bind_functions.hpp(232) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2784: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<2,boost::lambda::function_action<2,Result>>,detail::bi >> nd_ tuple_mapper<const Arg1,const Arg2>::type>> >> boost::lambda::bind(const >> Arg1 &,const Arg2 &)' : could not deduce template argument for >> 'overloaded function type' from 'overloaded function type' >> ..\..\boost\lambda\detail\bind_functions.hpp(232) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2784: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<2,boost::lambda::function_action<2,Result>>,detail::bi >> nd_ tuple_mapper<const Arg1,const Arg2>::type>> >> boost::lambda::bind(const >> Arg1 &,const Arg2 &)' : could not deduce template argument for >> 'overloaded function type' from 'overloaded function type' >> ..\..\boost\lambda\detail\bind_functions.hpp(232) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2784: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const >> Arg2>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &)' : could >> not deduce template argument for 'overloaded function type' from >> 'overloaded function type' >> with >> [ >> Arity=2, >> Act=boost::lambda::function_action<2> >> ] >> ..\..\boost\lambda\detail\bind_functions.hpp(212) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2784: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const >> Arg2>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &)' : could >> not deduce template argument for 'overloaded function type' from >> 'overloaded function type' >> with >> [ >> Arity=2, >> Act=boost::lambda::function_action<2> >> ] >> ..\..\boost\lambda\detail\bind_functions.hpp(212) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2784: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const >> Arg2>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &)' : could >> not deduce template argument for 'overloaded function type' from >> 'overloaded function type' >> with >> [ >> Arity=2, >> Act=boost::lambda::function_action<2> >> ] >> ..\..\boost\lambda\detail\bind_functions.hpp(212) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2784: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<2,boost::lambda::function_action<2,Result>>,detail::bi >> nd_ tuple_mapper<Result(__cdecl &)(Par1),const Arg2>::type>> >> boost::lambda::bind(Result (__cdecl &)(Par1),const Arg2 &)' : could >> not deduce template argument for 'overloaded function type' from >> 'overloaded function type' >> ..\..\boost\lambda\detail\bind_functions.hpp(190) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2784: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<2,boost::lambda::function_action<2,Result>>,detail::bi >> nd_ tuple_mapper<Result(__cdecl &)(Par1),const Arg2>::type>> >> boost::lambda::bind(Result (__cdecl &)(Par1),const Arg2 &)' : could >> not deduce template argument for 'overloaded function type' from >> 'overloaded function type' >> ..\..\boost\lambda\detail\bind_functions.hpp(190) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2784: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<2,boost::lambda::function_action<2,Result>>,detail::bi >> nd_ tuple_mapper<Result(__cdecl &)(Par1),const Arg2>::type>> >> boost::lambda::bind(Result (__cdecl &)(Par1),const Arg2 &)' : could >> not deduce template argument for 'overloaded function type' from >> 'overloaded function type' >> ..\..\boost\lambda\detail\bind_functions.hpp(190) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<1,boost::lambda::function_action<1,Result>>,detail::bi >> nd_ tuple_mapper<const Arg1>::type>> boost::lambda::bind(const Arg1 >> &)' : >> expects 1 arguments - 2 provided >> ..\..\boost\lambda\detail\bind_functions.hpp(91) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<Arity,Act>,detail::bind_tuple_mapper<const >> Arg1>::type>> boost::lambda::bind(const Arg1 &)' : expects 1 arguments - 2 provided >> with >> [ >> Arity=1, >> Act=boost::lambda::function_action<1> >> ] >> ..\..\boost\lambda\detail\bind_functions.hpp(71) : see >> declaration of 'boost::lambda::bind' >> test.cpp(39) : error C2780: 'const >> boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: >> lambda::action<1,boost::lambda::function_action<1,Result>>,detail::bi >> nd_ tuple_mapper<Result(__cdecl &)(void)>::type>> >> boost::lambda::bind(Result (__cdecl &)(void))' : expects 1 arguments >> - 2 provided >> ..\..\boost\lambda\detail\bind_functions.hpp(49) : see >> declaration of 'boost::lambda::bind' >> >> Thank you. >> >> Jacques Kerner >> >> _______________________________________________ >> Boost-users mailing list >> Boost-users(a)lists.boost.org >> http://lists.boost.org/mailman/listinfo.cgi/boost-users >> _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

2 1

[Boost.date_time] Missing export declaration in parser.hpp
by Marc Viala 30 Nov '05

30 Nov '05

Hi, I'm not really sure but I think there are some missing export declaration in the "parser.hpp" of Boost.date_time. The missing declarations is for function "special_value_from_string()" I've joined the corrected "parser.hpp" Could you confirm these observations? Marc Viala Marc Viala, PhD Directeur Général/Directeur Technique 122 rue de la Roche-de-Lorzier 38430 MOIRANS Tél : +33 (0)4 76 91 37 60 Fax : +33 (0)4 76 35 00 07 www.acticm.com <http://www.acticm.com> mailto:mviala@acticm.com <mailto:mviala@acticm.com>

3 3

How to compile with a conventional Makefile in BOOST
by Ace Bluedust 30 Nov '05

30 Nov '05

Hi, I would like to know if someone could show me how to compile and build with a conventional Makefile (linux-gnu-gcc) for the BOOST GRAPH LIBRARY. I'm not sure of which lib files to link and what are the needed flags. I have to do by Makefile because I also use another library other than BOOST. Thanks. THL -- ___________________________________________________ Play 100s of games for FREE! http://games.mail.com/

5 4

[format] negative 0?
by Alain Cormier 30 Nov '05

30 Nov '05

I use boost 1.32 with VS 6.0 (sp5) on Windows2000. If I try this : int anIntValue(-0); std::cout << anIntValue << '\n';\ I get : 0 And, if I try this : boost::format formatTest("My test : %0.0f \n"); double theValue(-0.0002); std::string theString = boost::io::str(formatTest % theValue); I get : "My test : -0" Is it the right behavior? I was expecting the same result (simply a 0). Maybe I am wrong... Thank you for any advise / suggestion. Alain

2 1

how to declare a reference to a boost shared pointer?
by eric 30 Nov '05

30 Nov '05

Can I declare a pure virtual member function which accepts as input a boost shared pointer to an object of a base class, such that - clients of the function can pass in as input a boost shared pointer to an object of a derived class - concrete implementations of the function can redirect the pointer to a new object of an (even more) derived class ? Consider the following class hierarchy in the problem domain: class Serializable {}; class Foo : public Serializable {}; class Bar : public Foo {}; Here is the pure virtual member function I would like to declare: class Serializer { public: virtual void serializeObject(boost::shared_ptr < Serializable > &) = 0; } And the relevant subset of one of its concrete implementations: class XmlReader : public Serializer { virtual void serializeObject(boost::shared_ptr < Serializable > &p) { p = boost::shared_ptr < Serializable > (new Bar()); } } The client would call the function like this: boost::shared_ptr < Foo > foo; Serializer *s = new XmlReader(); s->serializeObject(foo); The above code doesn't compile, the error message from VC6 is main.cpp(72) : error C2664: 'serializeObject' : cannot convert parameter 1 from 'class boost::shared_ptr<class Foo>' to 'class boost::shared_ptr<class Serializable> &' The best solution I have found so far is to declare the function like this: class XmlReader : public Serializer { virtual boost::shared_ptr < Serializable > serializeObject() { boost::shared_ptr < Serializable > ret = boost::shared_ptr < Serializable > (new Bar()); return ret; } } And call it like this: foo = boost::dynamic_pointer_cast< Foo >(s->serializeObject()); But that's not ideal for my purposes, I would prefer to have a function which modifies its inputs and returns void. I can't implement the function as a template because I need it to be virtual. Any assistance gratefully received. Regards, Eric

3 2

Boost.python serialization
by Drumheller, Michael 29 Nov '05

29 Nov '05

Thank you for the help. I have seen that link (the one you supplied) before, but I posted my question because that link in particular does not mention the words "Boost.Serialization" or "Archive" at all. I suppose what I was really getting at, and was probably not very clear about (sorry :| ) was whether the specific approach (by N. Becker) of using a stringstream wrapped with a boost::archive::binary_oarchive is a standard idiom. (Basically, I would have thought that "python pickle boost::archive" would be a million-hit Google query, but it's only about a dozen. I find that weird. Do people just not serialize their C++ extensions very often?) Thanks again. I really appreciate the help. MD ------------------------------ Message: 4 Date: Tue, 29 Nov 2005 07:32:10 -0500 From: David Abrahams <dave(a)boost-consulting.com> Subject: Re: [Boost-users] Boost.python serialization To: boost-users(a)lists.boost.org Message-ID: <uek4zfxdh.fsf(a)boost-consulting.com> Content-Type: text/plain; charset=us-ascii "Drumheller, Michael" <michael.drumheller(a)boeing.com> writes: > I'm just getting started with trying to serialize some Python and C++ > objects that are glued together with Boost.Python. Would it be fair > to say that this link > <<http://mail.python.org/pipermail/c++-sig/2004-September/008044.html> > > represents the "standard" approach to this? Yes. http://www.boost.org/libs/python/doc/v2/pickle.html -- Dave Abrahams Boost Consulting www.boost-consulting.com

2 1

Re: [Boost-users] Overload problem with bind
by Kerner, Jacques 29 Nov '05

29 Nov '05

Oops. The correct line goes like this : bind( static_cast<const float & (Position::*)(void)const>(&Position::GetX), ref(myPos) ) Thank you very much! The error message was a bit misleading though. Jacques Kerner. -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Kerner, Jacques Sent: Tuesday, November 29, 2005 10:30 AM To: boost-users(a)lists.boost.org Subject: [Boost-users] Overload problem with bind Hi, The following test generates an error : class Position { const float & GetX() const {...} float & GetX() {...} }; Position myPos; bind( &Position::GetX, ref(myPos) ) // <- does not compile How can I avoid these ? : (with MSVC 7.1) test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<10,boost::lambda::function_action<10,Result>>,detail::bin d_tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8,const Arg9,const Arg10>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &,const Arg9 &,const Arg10 &)' : expects 10 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(1743) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8,const Arg9,const Arg10>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &,const Arg9 &,const Arg10 &)' : expects 10 arguments - 2 provided with [ Arity=10, Act=boost::lambda::function_action<10> ] ..\..\boost\lambda\detail\bind_functions.hpp(1710) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<10,boost::lambda::function_action<10,Result>>,detail::bin d_tuple_mapper<Result(__cdecl &)(Par1,Par2,Par3,Par4,Par5,Par6,Par7,Par8,Par9),const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8,const Arg9,const Arg10>::type>> boost::lambda::bind(Result (__cdecl &)(Par1,Par2,Par3,Par4,Par5,Par6,Par7,Par8,Par9),const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &,const Arg9 &,const Arg10 &)' : expects 10 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(1673) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<9,boost::lambda::function_action<9,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8,const Arg9>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &,const Arg9 &)' : expects 9 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(1526) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8,const Arg9>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &,const Arg9 &)' : expects 9 arguments - 2 provided with [ Arity=9, Act=boost::lambda::function_action<9> ] ..\..\boost\lambda\detail\bind_functions.hpp(1494) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<9,boost::lambda::function_action<9,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1,Par2,Par3,Par4,Par5,Par6,Par7,Par8),const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8,const Arg9>::type>> boost::lambda::bind(Result (__cdecl &)(Par1,Par2,Par3,Par4,Par5,Par6,Par7,Par8),const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &,const Arg9 &)' : expects 9 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(1458) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<8,boost::lambda::function_action<8,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &)' : expects 8 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(1322) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &)' : expects 8 arguments - 2 provided with [ Arity=8, Act=boost::lambda::function_action<8> ] ..\..\boost\lambda\detail\bind_functions.hpp(1291) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<8,boost::lambda::function_action<8,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1,Par2,Par3,Par4,Par5,Par6,Par7),const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8>::type>> boost::lambda::bind(Result (__cdecl &)(Par1,Par2,Par3,Par4,Par5,Par6,Par7),const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &)' : expects 8 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(1257) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<7,boost::lambda::function_action<7,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &)' : expects 7 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(1123) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &)' : expects 7 arguments - 2 provided with [ Arity=7, Act=boost::lambda::function_action<7> ] ..\..\boost\lambda\detail\bind_functions.hpp(1092) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<7,boost::lambda::function_action<7,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1,Par2,Par3,Par4,Par5,Par6),const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7>::type>> boost::lambda::bind(Result (__cdecl &)(Par1,Par2,Par3,Par4,Par5,Par6),const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &)' : expects 7 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(1058) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<6,boost::lambda::function_action<6,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &)' : expects 6 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(927) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &)' : expects 6 arguments - 2 provided with [ Arity=6, Act=boost::lambda::function_action<6> ] ..\..\boost\lambda\detail\bind_functions.hpp(899) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<6,boost::lambda::function_action<6,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1,Par2,Par3,Par4,Par5),const Arg2,const Arg3,const Arg4,const Arg5,const Arg6>::type>> boost::lambda::bind(Result (__cdecl &)(Par1,Par2,Par3,Par4,Par5),const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &)' : expects 6 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(867) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<5,boost::lambda::function_action<5,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &)' : expects 5 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(738) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &)' : expects 5 arguments - 2 provided with [ Arity=5, Act=boost::lambda::function_action<5> ] ..\..\boost\lambda\detail\bind_functions.hpp(710) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<5,boost::lambda::function_action<5,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1,Par2,Par3,Par4),const Arg2,const Arg3,const Arg4,const Arg5>::type>> boost::lambda::bind(Result (__cdecl &)(Par1,Par2,Par3,Par4),const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &)' : expects 5 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(679) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<4,boost::lambda::function_action<4,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &)' : expects 4 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(558) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &)' : expects 4 arguments - 2 provided with [ Arity=4, Act=boost::lambda::function_action<4> ] ..\..\boost\lambda\detail\bind_functions.hpp(532) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<4,boost::lambda::function_action<4,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1,Par2,Par3),const Arg2,const Arg3,const Arg4>::type>> boost::lambda::bind(Result (__cdecl &)(Par1,Par2,Par3),const Arg2 &,const Arg3 &,const Arg4 &)' : expects 4 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(503) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<3,boost::lambda::function_action<3,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2,const Arg3>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &)' : expects 3 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(387) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2,const Arg3>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &)' : expects 3 arguments - 2 provided with [ Arity=3, Act=boost::lambda::function_action<3> ] ..\..\boost\lambda\detail\bind_functions.hpp(361) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<3,boost::lambda::function_action<3,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1,Par2),const Arg2,const Arg3>::type>> boost::lambda::bind(Result (__cdecl &)(Par1,Par2),const Arg2 &,const Arg3 &)' : expects 3 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(333) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2784: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<2,boost::lambda::function_action<2,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type' ..\..\boost\lambda\detail\bind_functions.hpp(232) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2784: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<2,boost::lambda::function_action<2,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type' ..\..\boost\lambda\detail\bind_functions.hpp(232) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2784: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<2,boost::lambda::function_action<2,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type' ..\..\boost\lambda\detail\bind_functions.hpp(232) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2784: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type' with [ Arity=2, Act=boost::lambda::function_action<2> ] ..\..\boost\lambda\detail\bind_functions.hpp(212) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2784: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type' with [ Arity=2, Act=boost::lambda::function_action<2> ] ..\..\boost\lambda\detail\bind_functions.hpp(212) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2784: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type' with [ Arity=2, Act=boost::lambda::function_action<2> ] ..\..\boost\lambda\detail\bind_functions.hpp(212) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2784: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<2,boost::lambda::function_action<2,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1),const Arg2>::type>> boost::lambda::bind(Result (__cdecl &)(Par1),const Arg2 &)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type' ..\..\boost\lambda\detail\bind_functions.hpp(190) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2784: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<2,boost::lambda::function_action<2,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1),const Arg2>::type>> boost::lambda::bind(Result (__cdecl &)(Par1),const Arg2 &)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type' ..\..\boost\lambda\detail\bind_functions.hpp(190) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2784: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<2,boost::lambda::function_action<2,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1),const Arg2>::type>> boost::lambda::bind(Result (__cdecl &)(Par1),const Arg2 &)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type' ..\..\boost\lambda\detail\bind_functions.hpp(190) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<1,boost::lambda::function_action<1,Result>>,detail::bind_ tuple_mapper<const Arg1>::type>> boost::lambda::bind(const Arg1 &)' : expects 1 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(91) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1>::type>> boost::lambda::bind(const Arg1 &)' : expects 1 arguments - 2 provided with [ Arity=1, Act=boost::lambda::function_action<1> ] ..\..\boost\lambda\detail\bind_functions.hpp(71) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<1,boost::lambda::function_action<1,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(void)>::type>> boost::lambda::bind(Result (__cdecl &)(void))' : expects 1 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(49) : see declaration of 'boost::lambda::bind' Thank you. Jacques Kerner _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

1 0

Overload problem with bind
by Kerner, Jacques 29 Nov '05

29 Nov '05

Hi, The following test generates an error : class Position { const float & GetX() const {...} float & GetX() {...} }; Position myPos; bind( &Position::GetX, ref(myPos) ) // <- does not compile How can I avoid these ? : (with MSVC 7.1) test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<10,boost::lambda::function_action<10,Result>>,detail::bin d_tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8,const Arg9,const Arg10>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &,const Arg9 &,const Arg10 &)' : expects 10 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(1743) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8,const Arg9,const Arg10>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &,const Arg9 &,const Arg10 &)' : expects 10 arguments - 2 provided with [ Arity=10, Act=boost::lambda::function_action<10> ] ..\..\boost\lambda\detail\bind_functions.hpp(1710) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<10,boost::lambda::function_action<10,Result>>,detail::bin d_tuple_mapper<Result(__cdecl &)(Par1,Par2,Par3,Par4,Par5,Par6,Par7,Par8,Par9),const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8,const Arg9,const Arg10>::type>> boost::lambda::bind(Result (__cdecl &)(Par1,Par2,Par3,Par4,Par5,Par6,Par7,Par8,Par9),const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &,const Arg9 &,const Arg10 &)' : expects 10 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(1673) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<9,boost::lambda::function_action<9,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8,const Arg9>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &,const Arg9 &)' : expects 9 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(1526) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8,const Arg9>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &,const Arg9 &)' : expects 9 arguments - 2 provided with [ Arity=9, Act=boost::lambda::function_action<9> ] ..\..\boost\lambda\detail\bind_functions.hpp(1494) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<9,boost::lambda::function_action<9,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1,Par2,Par3,Par4,Par5,Par6,Par7,Par8),const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8,const Arg9>::type>> boost::lambda::bind(Result (__cdecl &)(Par1,Par2,Par3,Par4,Par5,Par6,Par7,Par8),const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &,const Arg9 &)' : expects 9 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(1458) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<8,boost::lambda::function_action<8,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &)' : expects 8 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(1322) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &)' : expects 8 arguments - 2 provided with [ Arity=8, Act=boost::lambda::function_action<8> ] ..\..\boost\lambda\detail\bind_functions.hpp(1291) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<8,boost::lambda::function_action<8,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1,Par2,Par3,Par4,Par5,Par6,Par7),const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7,const Arg8>::type>> boost::lambda::bind(Result (__cdecl &)(Par1,Par2,Par3,Par4,Par5,Par6,Par7),const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &,const Arg8 &)' : expects 8 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(1257) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<7,boost::lambda::function_action<7,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &)' : expects 7 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(1123) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &)' : expects 7 arguments - 2 provided with [ Arity=7, Act=boost::lambda::function_action<7> ] ..\..\boost\lambda\detail\bind_functions.hpp(1092) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<7,boost::lambda::function_action<7,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1,Par2,Par3,Par4,Par5,Par6),const Arg2,const Arg3,const Arg4,const Arg5,const Arg6,const Arg7>::type>> boost::lambda::bind(Result (__cdecl &)(Par1,Par2,Par3,Par4,Par5,Par6),const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &,const Arg7 &)' : expects 7 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(1058) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<6,boost::lambda::function_action<6,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &)' : expects 6 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(927) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5,const Arg6>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &)' : expects 6 arguments - 2 provided with [ Arity=6, Act=boost::lambda::function_action<6> ] ..\..\boost\lambda\detail\bind_functions.hpp(899) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<6,boost::lambda::function_action<6,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1,Par2,Par3,Par4,Par5),const Arg2,const Arg3,const Arg4,const Arg5,const Arg6>::type>> boost::lambda::bind(Result (__cdecl &)(Par1,Par2,Par3,Par4,Par5),const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &,const Arg6 &)' : expects 6 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(867) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<5,boost::lambda::function_action<5,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &)' : expects 5 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(738) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4,const Arg5>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &)' : expects 5 arguments - 2 provided with [ Arity=5, Act=boost::lambda::function_action<5> ] ..\..\boost\lambda\detail\bind_functions.hpp(710) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<5,boost::lambda::function_action<5,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1,Par2,Par3,Par4),const Arg2,const Arg3,const Arg4,const Arg5>::type>> boost::lambda::bind(Result (__cdecl &)(Par1,Par2,Par3,Par4),const Arg2 &,const Arg3 &,const Arg4 &,const Arg5 &)' : expects 5 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(679) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<4,boost::lambda::function_action<4,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &)' : expects 4 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(558) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2,const Arg3,const Arg4>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &,const Arg4 &)' : expects 4 arguments - 2 provided with [ Arity=4, Act=boost::lambda::function_action<4> ] ..\..\boost\lambda\detail\bind_functions.hpp(532) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<4,boost::lambda::function_action<4,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1,Par2,Par3),const Arg2,const Arg3,const Arg4>::type>> boost::lambda::bind(Result (__cdecl &)(Par1,Par2,Par3),const Arg2 &,const Arg3 &,const Arg4 &)' : expects 4 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(503) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<3,boost::lambda::function_action<3,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2,const Arg3>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &)' : expects 3 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(387) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2,const Arg3>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &,const Arg3 &)' : expects 3 arguments - 2 provided with [ Arity=3, Act=boost::lambda::function_action<3> ] ..\..\boost\lambda\detail\bind_functions.hpp(361) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<3,boost::lambda::function_action<3,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1,Par2),const Arg2,const Arg3>::type>> boost::lambda::bind(Result (__cdecl &)(Par1,Par2),const Arg2 &,const Arg3 &)' : expects 3 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(333) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2784: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<2,boost::lambda::function_action<2,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type' ..\..\boost\lambda\detail\bind_functions.hpp(232) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2784: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<2,boost::lambda::function_action<2,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type' ..\..\boost\lambda\detail\bind_functions.hpp(232) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2784: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<2,boost::lambda::function_action<2,Result>>,detail::bind_ tuple_mapper<const Arg1,const Arg2>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type' ..\..\boost\lambda\detail\bind_functions.hpp(232) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2784: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type' with [ Arity=2, Act=boost::lambda::function_action<2> ] ..\..\boost\lambda\detail\bind_functions.hpp(212) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2784: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type' with [ Arity=2, Act=boost::lambda::function_action<2> ] ..\..\boost\lambda\detail\bind_functions.hpp(212) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2784: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1,const Arg2>::type>> boost::lambda::bind(const Arg1 &,const Arg2 &)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type' with [ Arity=2, Act=boost::lambda::function_action<2> ] ..\..\boost\lambda\detail\bind_functions.hpp(212) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2784: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<2,boost::lambda::function_action<2,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1),const Arg2>::type>> boost::lambda::bind(Result (__cdecl &)(Par1),const Arg2 &)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type' ..\..\boost\lambda\detail\bind_functions.hpp(190) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2784: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<2,boost::lambda::function_action<2,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1),const Arg2>::type>> boost::lambda::bind(Result (__cdecl &)(Par1),const Arg2 &)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type' ..\..\boost\lambda\detail\bind_functions.hpp(190) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2784: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<2,boost::lambda::function_action<2,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(Par1),const Arg2>::type>> boost::lambda::bind(Result (__cdecl &)(Par1),const Arg2 &)' : could not deduce template argument for 'overloaded function type' from 'overloaded function type' ..\..\boost\lambda\detail\bind_functions.hpp(190) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<1,boost::lambda::function_action<1,Result>>,detail::bind_ tuple_mapper<const Arg1>::type>> boost::lambda::bind(const Arg1 &)' : expects 1 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(91) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<Arity,Act>,detail::bind_tuple_mapper<const Arg1>::type>> boost::lambda::bind(const Arg1 &)' : expects 1 arguments - 2 provided with [ Arity=1, Act=boost::lambda::function_action<1> ] ..\..\boost\lambda\detail\bind_functions.hpp(71) : see declaration of 'boost::lambda::bind' test.cpp(39) : error C2780: 'const boost::lambda::lambda_functor<boost::lambda::lambda_functor_base<boost:: lambda::action<1,boost::lambda::function_action<1,Result>>,detail::bind_ tuple_mapper<Result(__cdecl &)(void)>::type>> boost::lambda::bind(Result (__cdecl &)(void))' : expects 1 arguments - 2 provided ..\..\boost\lambda\detail\bind_functions.hpp(49) : see declaration of 'boost::lambda::bind' Thank you. Jacques Kerner

3 2

OpenVMS 8.2 port?
by Philip A. Naecker 29 Nov '05

29 Nov '05

I'm trying to build Boost on OpenVMS I64 8.2 and it fails in building jam. Has anyone succeeded in building on 8.2? If so, can you provide the cc and linker options you used? Thanks. P

3 16

[serialization] reference to a vector of shared pointers of objects with non-default constructible templated class
by codeur＠altern.org 29 Nov '05

29 Nov '05

Hello, I have a non-default templated class (let's call it Klass), serialized throw a pointer, so I redefined save_construct_data and load_construct_data for the type Klass<double>. One of the member of my class has the following type: typedef boost::shared_ptr< Point3d<T> >PointPtr; vector< PointPtr >& stuff; Point3d is another templated class. T could be for instance, double. Point3d is track_selectivly, Klass is track_selectivly and serialized by another class with a pointer. In save_construct_data when I do : ar << t->stuff; I've got the following problem : boost-1_33/boost/archive/detail/oserializer.hpp:566: error: incomplete type `boost::STATIC_ASSERTION_FAILURE<false>' does not have member `value' Perhaps I didn't place the good track attribute. Does someone have an idea ? Thanks in advance!

2 1

Boost.python serialization
by Drumheller, Michael 29 Nov '05

29 Nov '05

I'm just getting started with trying to serialize some Python and C++ objects that are glued together with Boost.Python. Would it be fair to say that this link <<http://mail.python.org/pipermail/c++-sig/2004-September/008044.html>> represents the "standard" approach to this? Thanks, MD

2 1

date_time library throwing a lot of warnings
by A Johan 29 Nov '05

29 Nov '05

Good day everyone, i'm using the boost::date_time::posix_time libarary in my application. When ever i compile i get lots of warning. mostly its about not being able to generate copy constructors from the lexical_cast lbrary and a whole lot of "C4127 conditional experssion is constant. OS: windows 2000 server Compiler: MSVC 7.1 is this normal or am i missing something here? the boost lib was compiled with the msvc_71 toolset. D:\boost_1_33_0\boost\lexical_cast.hpp(191) : warning C4511: 'boost::detail::lexical_stream<Target,Source>' : copy constructor could not be generated with [ Target=short, Source=NewSource ] D:\boost_1_33_0\boost\lexical_cast.hpp(218) : see reference to class template instantiation 'boost::detail::lexical_stream<Target,Source>' being compiled with [ Target=short, Source=NewSource ] D:\boost_1_33_0\boost\date_time\time_parsing.hpp(201) : see reference to function template instantiation 'Target boost::lexical_cast<short,Type>(const Source &)' being compiled with [ Target=short, Type=std::string, Source=std::string ] D:\boost_1_33_0\boost\date_time\time_parsing.hpp(275) : see reference to function template instantiation 'time_duration boost::date_time::parse_undelimited_time_duration<time_duration>(const std::string &)' being compiled with [ time_duration=time_duration ] D:\boost_1_33_0\boost\date_time\posix_time\time_parsers.hpp(35) : see reference to function template instantiation 'time_type boost::date_time::parse_iso_time<boost::posix_time::ptime>(const std::string &,char)' being compiled with [ time_type=boost::posix_time::ptime ] D:\boost_1_33_0\boost\lexical_cast.hpp(191) : warning C4512: 'boost::detail::lexical_stream<Target,Source>' : assignment operator could not be generated with [ Target=short, Source=NewSource ] D:\boost_1_33_0\boost\lexical_cast.hpp(137) : warning C4127: conditional expression is constant D:\boost_1_33_0\boost\lexical_cast.hpp(133) : while compiling class-template member function 'boost::detail::lexical_stream<Target,Source>::lexical_stream(void)' with [ Target=short, Source=NewSource ] D:\boost_1_33_0\boost\lexical_cast.hpp(218) : see reference to class template instantiation 'boost::detail::lexical_stream<Target,Source>' being compiled with [ Target=short, Source=NewSource ] D:\boost_1_33_0\boost\date_time\time_parsing.hpp(201) : see reference to function template instantiation 'Target boost::lexical_cast<short,Type>(const Source &)' being compiled with [ Target=short, Type=std::string, Source=std::string ] D:\boost_1_33_0\boost\lexical_cast.hpp(139) : warning C4127: conditional expression is constant cheers.

3 4

Re: [Boost-users] How to find type boost::variant is holding?
by Merrill Cornish 29 Nov '05

29 Nov '05

Bruno, Thanks, Merrill

1 0

How to find type boost::variant is holding?
by Merrill Cornish 28 Nov '05

28 Nov '05

If I have a boost::variant variable holding either of two types, is there a simple test to determine which type it is currently holding? Yes, I know that the object-oriented way to to avoid testing for types at runtime, but a simple if-test would work very well in the code. I've seen the static_visitor example, and that would work, but it hides the type determination and type-specific actions inside another class (or at least other functions). Yes, that would work logically, but the code needing to make this determination would be much clearer is written simply as a if-the-else based on the current type of the variant variable. Merrill

2 1

libferris problem with boost
by brussels 28 Nov '05

28 Nov '05

Please help me with the issue described below --- Forwarded message -- From: brussels <brussels(a)yandex.ru> To: <witme-ferris(a)lists.sourceforge.net> Date: 27.11.05 22:31 Subject: No subject I trying to build libferris-1.1.70 from source. The library is building and linking without errors, but when we going to build tests and apps i get errors like this make[2]: Entering directory `/usr/home/quark/build/libferris-1.1.70/tests/regression/relativePaths' /bin/sh ../../../libtool --tag=CXX --mode=link g++ -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/local/include/stlport -I/usr/local/lib/sigc++-1.2/include -I/usr/local/include/sigc++-1.2 -DMAX_SMALL_OBJECT_SIZE=0 -DDEFAULT_CHUNK_SIZE=4096 -I/usr/local/include -I/usr/local/include/FerrisLoki -I/usr/local/include/stlport -g -O2 -I/usr/include/xfs -O3 -DNDEBUG -I/nothing -DG_DISABLE_ASSERT -ffast-math -DFERRIS_HAVE_EET -DFERRIS_HAVE_GDBM -I/usr/home/quark/build/libferris-1.1.70/Ferris -I/usr/local/include -I/usr/local/include -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/local/include/STLdb4 -I/usr/local/include/stlport -I/usr/local/include -I/usr/local/include/FerrisLoki -I/usr/local/include/FerrisStreams -I/usr/local/lib/sigc++-1.2/include -I/usr/local/include/sigc++-1.2 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -L/usr/local/lib -L/usr/local/lib -L/usr/local/lib -lxerces-c -lxerces-depdom -L/usr/local/lib -lxalan-c -o relativePaths -Wl,--export-dynamic -lgmodule-2.0 -ldl -lgobject-2.0 -lglib-2.0 relativePaths.o -lpopt /usr/home/quark/build/libferris-1.1.70/Ferris/libferris.la -L/usr/local/qt/lib -lqt -lXext -lX11 -lm -lSM -lICE -ldl -ljpeg g++ -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/local/include/stlport -I/usr/local/lib/sigc++-1.2/include -I/usr/local/include/sigc++-1.2 -DMAX_SMALL_OBJECT_SIZE=0 -DDEFAULT_CHUNK_SIZE=4096 -I/usr/local/include -I/usr/local/include/FerrisLoki -I/usr/local/include/stlport -g -O2 -I/usr/include/xfs -O3 -DNDEBUG -I/nothing -DG_DISABLE_ASSERT -ffast-math -DFERRIS_HAVE_EET -DFERRIS_HAVE_GDBM -I/usr/home/quark/build/libferris-1.1.70/Ferris -I/usr/local/include -I/usr/local/include -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/local/include/STLdb4 -I/usr/local/include/stlport -I/usr/local/include -I/usr/local/include/FerrisLoki -I/usr/local/include/FerrisStreams -I/usr/local/lib/sigc++-1.2/include -I/usr/local/include/sigc++-1.2 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -o .libs/relativePaths -Wl,--export-dynamic relativePaths.o -L/usr/local/lib /usr/home/quark/build/libferris-1.1.70/Ferris/.libs/libferris.so -L/usr/local/qt/lib -L/usr/X11R6/lib -L/usr/i486-slackware-linux/bin -L/usr/i486-slackware-linux/lib -L/usr/lib/gcc-lib/i486-slackware-linux/../../../i486-slackware-linux/lib -L/usr/lib/gcc-lib/i486-slackware-linux/../.. /usr/lib/libfreetype.so /usr/lib/libexpat.so /usr/local/lib/libfampp.so /usr/local/lib/libfam.so -lxerces-c -lxerces-depdom -lxalan-c /usr/local/lib/libfile.so -lssl /usr/local/lib/libstldb4.so /usr/local/lib/libferrisstreams.so /usr/local/lib/libsigc-1.2.so /usr/local/lib/libferrisloki.so /usr/lib/libgmodule-2.0.so /usr/lib/libgobject-2.0.so /usr/lib/libglib-2.0.so -lstlport_gcc -luuid /usr/lib/librpm.so -L/usr/lib /usr/lib/librpmdb.so /usr/lib/librpmio.so -lrt -lpthread -lbz2 /usr/lib/libpopt.so /usr/local/lib/libgpgme.so /usr/local/lib/libgpg-error.so /usr/local/lib/librdf.so /usr/local/lib/librasqal.so /usr/local/lib/libraptor.so /usr/lib/libxslt.so /usr/lib/libxml2.so -lz /usr/lib/libdb-4.2.so -lcrypto -lboost_wserialization-gcc -lboost_serialization-gcc /usr/lib/./libstdc++.so /usr/local/qt-x11-free-3.3.5/lib/libqt. so -lXrender -lXrandr -lXcursor -lXinerama -lXft /usr/local/lib/libfreetype.so /usr/X11R6/lib/libfontconfig.so -lXext -lX11 -lm -lSM -lICE -ldl -ljpeg -Wl,--rpath -Wl,/usr/home/quark/build/libferris-1.1.70/Ferris/.libs -Wl,--rpath -Wl,/usr/lib/. -Wl,--rpath -Wl,/usr/local/qt-x11-free-3.3.5/lib -Wl,--rpath -Wl,/usr/lib/. -Wl,--rpath -Wl,/usr/local/qt-x11-free-3.3.5/lib /usr/home/quark/build/libferris-1.1.70/Ferris/.libs/libferris.so: undefined reference to `boost::archive::basic_binary_iprimitive<boost::archive::binary_iarchive, _STL::basic_istream<char, _STL::char_traits<char> > >::basic_binary_iprimitive[not-in-charge](_STL::basic_istream<char, _STL::char_traits<char> >&, bool)' /usr/local/lib/libferrisloki.so: undefined reference to `sigc::trackable::~trackable [not-in-charge]()' /usr/local/lib/libferrisloki.so: undefined reference to `sigc::slot_base::slot_base[in-charge](sigc::slot_base const&)' /usr/local/lib/libferrisloki.so: undefined reference to `sigc::internal::signal_impl::sweep()' /usr/home/quark/build/libferris-1.1.70/Ferris/.libs/libferris.so: undefined reference to `boost::archive::basic_binary_iprimitive<boost::archive::binary_iarchive, _STL::basic_istream<char, _STL::char_traits<char> > >::load(_STL::basic_string<char, _STL::char_traits<char>, _STL::allocator<char> >&)' /usr/home/quark/build/libferris-1.1.70/Ferris/.libs/libferris.so: undefined reference to `VTT for FerrisLoki::Handlable' /usr/home/quark/build/libferris-1.1.70/Ferris/.libs/libferris.so: undefined reference to `boost::archive::basic_binary_oprimitive<boost::archive::binary_oarchive, _STL::basic_ostream<char, _STL::char_traits<char> > >::~basic_binary_oprimitive [not-in-charge]()' /usr/local/lib/libferrisloki.so: undefined reference to `sigc::slot_base::slot_base[in-charge]()' /usr/local/lib/libferrisloki.so: undefined reference to `sigc::slot_base::~slot_base [in-charge]()' /usr/local/lib/libferrisloki.so: undefined reference to `sigc::trackable::trackable[not-in-charge]()' /usr/home/quark/build/libferris-1.1.70/Ferris/.libs/libferris.so: undefined reference to `boost::archive::basic_binary_oprimitive<boost::archive::binary_oarchive, _STL::basic_ostream<char, _STL::char_traits<char> > >::save(_STL::basic_string<char, _STL::char_traits<char>, _STL::allocator<char> > const&)' /usr/home/quark/build/libferris-1.1.70/Ferris/.libs/libferris.so: undefined reference to `boost::archive::basic_binary_oprimitive<boost::archive::binary_oarchive, _STL::basic_ostream<char, _STL::char_traits<char> > >::init()' /usr/local/lib/libferrisloki.so: undefined reference to `sigc::signal_base::signal_base[not-in-charge]()' /usr/home/quark/build/libferris-1.1.70/Ferris/.libs/libferris.so: undefined reference to `boost::archive::basic_binary_oprimitive<boost::archive::binary_oarchive, _STL::basic_ostream<char, _STL::char_traits<char> > >::basic_binary_oprimitive[not-in-charge](_STL::basic_ostream<char, _STL::char_traits<char> >&, bool)' /usr/home/quark/build/libferris-1.1.70/Ferris/.libs/libferris.so: undefined reference to `boost::archive::basic_binary_iprimitive<boost::archive::binary_iarchive, _STL::basic_istream<char, _STL::char_traits<char> > >::init()' /usr/home/quark/build/libferris-1.1.70/Ferris/.libs/libferris.so: undefined reference to `boost::archive::basic_binary_iprimitive<boost::archive::binary_iarchive, _STL::basic_istream<char, _STL::char_traits<char> > >::~basic_binary_iprimitive [not-in-charge]()' collect2: ld returned 1 exit status make[2]: *** [relativePaths] Error 1 make[2]: Leaving directory `/usr/home/quark/build/libferris-1.1.70/tests/regression/relativePaths' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/usr/home/quark/build/libferris-1.1.70/tests/regression' make: *** [all-recursive] Error 1 I use boost 1_33_1 and gcc 3.3.6 and linux 2.4.31 Any help appreciated.. Thank you --- End of forwarded message -- -- Яндекс.Почта: объем почтового ящика не ограничен! http://mail.yandex.ru/monitoring/

4 8

[counting_iterator] restriction/bug in distance_to()
by Martin Weigel 28 Nov '05

28 Nov '05

Hi, counting_iterator.hpp defines the distance_to() member function as follows (from CVS HEAD), template <class OtherIncrementable> difference_type distance_to(counting_iterator<OtherIncrementable> const& y) const { ... Since the argument counting_iterator<OtherIncrementable> uses the default values for CategoryOrTraversal and Difference, this distance_to() template does not apply for counting_iterator's with other than the default values for CategoryOrTraversal and Difference. In particular, for a counting_iterator with non-default CategoryOrTraversal or Difference, the necessary function typedef counting_iterator<Incrementable, CategoryOrTraversal, Distance> it_type; it_type::distance_to(it_type const&) cannot be instantiated from the above template, resulting in a compile-time error. Best, Martin

2 2

[serialization] pointer derived from an abstract templated class
by codeur＠altern.org 28 Nov '05

28 Nov '05

Hello, I know the question has already been asked (http://groups.google.com/group/boost-list/browse_thread/thread/9e1bcbd7c4f7…) but without answers. So I retry.. Is it possible to serialize an object that inherits from a templated abstract class ? For instance : template<typename T> class base { }; template<typename T> class Impl : public base<T> { }; int main(/* ... */) { base *b = new Impl(type); // how can we serialize b ? } Thanks for your help.

2 1

scoped_ptr faq
by Bruno Martínez 28 Nov '05

28 Nov '05

Hi. I had the same question that is answered there, but the answer didn't fit my problem. I'm using scoped_ptr<node> inside node itself, so node is incomplete at the point of use. That forbids using auto_ptr, IIUC. I think it would be good to add to the answer: Q. Why doesn't scoped_ptr have a release() member? A. When reading source code, it is valuable to be able to draw conclusions about program behavior based on the types being used. If scoped_ptr had a release() member, it would become possible to transfer ownership of the held pointer, weakening its role as a way of limiting resource lifetime to a given context. Use std::auto_ptr where transfer of ownership is required, or shared_ptr if incomplete type support is needed. "or shared_ptr if incomplete type support is needed." is mine. How's that? Regards, Bruno

3 6

How to compile boost in Borland c++ Builder 6
by pes nemarn 28 Nov '05

28 Nov '05

As subject says - I am in need of information about on how to compile boost in Borland c++ Builder 6 on operation system Windows XP. I have been searching everywhere, instructions are either too complicated or badly written - in any case I still havent found the answer. I hope you'll help me, I'm realy stuck and you guys are probably my last resort. Looking forward to answers or hints, cheers.

6 17

serialization: handling variable length data
by __PPS__ 27 Nov '05

27 Nov '05

in simplest case std::string is serialized this way: length|string data. in this case it's possible to feed invalid data to deserialization function so that application stalls waiting for the os to reserve huge pile or ram, or fails with bad alloc. this invalid data could be intentionally manually edited or as well it could be the case where you serialize ints and then try to deserialize data as strings (or whatever else). isn't it possible to have archives such check somehow the size of available stream data. (eg, for stringstream), or archives that initialized with a data pointer and the size of the data pointed by that pointer or maybe something else here's a complete example that shows such problem in action ///////////////////////////// #include <iostream> #include <fstream> #include <string> #include <ctime> #include <boost/archive/text_oarchive.hpp> #include <boost/archive/binary_iarchive.hpp> #include <boost/serialization/serialization.hpp> using namespace std; using namespace boost::archive; int main()try{ string s1 = "Hello world!", s2; { ofstream file("data.txt", ios::binary | ios::trunc); text_oarchive a(file, no_header); a << s1; } time_t t(time(0)); { ifstream file("data.txt", ios::binary); binary_iarchive a(file, no_header); a >> s2; } cout << "time elapsed: " << (time(0)-t) << "s" << endl; cout << "s2.size() => " << s2.size() << "\n" "s2 => \"" << s2.substr(0,64) << "...\"" << endl; }catch(const exception &e){ cout << "error: " << e.what() << endl; } ///////////////////////////// and the output I got on win xp: time elapsed: 110s s2.size() => 1210069553 s2 => "ello world! ..."

2 2

Re: [Boost-users] program_options: wild write
by Merrill Cornish 27 Nov '05

27 Nov '05

Peter, Once I understood that even though positional parameters have been declared, they still have to be listed as an option, I got my positional parameter to work. I've even been able to follow the examples to "hide" the positional parameter name from the --help print out. I've still got the problem that an illegal option value triggers Dr Watson. I need to create a short example that I can post. Merrill

5 5

How to sort a vector of tuples
by Sumanth J.V 26 Nov '05

26 Nov '05

Greetings, I have no idea why the following code does not work. Seems to work fine when I try sorting a vector of ints instead. I have even overloaded the < operator. If I understand correctly, this is the only requirement to sort a userdefined class. The compiler gets mad and spits out a a whole bunch of errors. thanx #include "boost/tuple/tuple_io.hpp" #include <vector> #include <algorithm> typedef boost::tuple<unsigned long int, unsigned long int, double, unsigned long int> Task; typedef std::vector<Task> TaskSet; bool operator<(const Task& a, const Task& b) { return boost::get<1>(a) < boost::get<1>(b); } int main(int argc, char** argv) { TaskSet ts; ts.push_back( boost::make_tuple(0, 0, 0, 0) ); ts.push_back( boost::make_tuple(3, 3, 3, 3) ); ts.push_back( boost::make_tuple(2, 2, 2, 2) ); std::sort(ts.begin(), ts.end()); return 0; }

4 5

Re: [Boost-users] shared_ptr vs ordinary pointers
by Merrill Cornish 26 Nov '05

26 Nov '05

Jonathan, Yes, I should have left out the delete() for the shared_ptr version since that's one if its big features. I have used shared_ptr code similar to your example, but I can't use it in the case I'm thinking of. This particular pointer needs to be passed around so a single scope doesn't work. Thanks, Merrill

2 1

shared_ptr vs ordinary pointers
by Merrill Cornish 26 Nov '05

26 Nov '05

With an ordinary C++ pointer, if I have a BaseClass and a DerivedClass derived from BaseClass, then I can do BaseClass* objectPtr; objectPtr = new DerivedClass(); Later, if BaseClass has a virtual destructor, I can call delete(objectPtr) and the DerivedClass destructor will be called. Now, does this work with shared_ptr? shared_ptr<BaseClass> objectPtr; objectPtr = shared_ptr<DerivedClass>(new DerivedClass()); and later, delete(objectPtr). Does any of the magic going on behind the scenes prevent shared_ptrs from being used like this? Merrill

4 3

Re: [Boost-users] program_options: Failure Demo
by Merrill Cornish 25 Nov '05

25 Nov '05

Volodya, Should I post the ZIPs on boot-users or send it directly to you? Merrill

2 1

Re: [Boost-users] program_options: Failure Demo
by Merrill Cornish 25 Nov '05

25 Nov '05

Volodya, I'm running Boost 1.33.0 compiled for MinGW multi-threaded. I agree that the message with only hex addesses isn't very useful, but that is all that pops up. ZoneAlert *says* the program is DWWIN.EXE, but I don't *see* Dr Watson. I disabled ZoneAlert and ran it again. I now have a 13KB Dr Watson log and a 3KB user.dmp file. Together, they ZIP to 4.8KB. Would you like me to send the ZIP to you? I have relinked the failing executable to remove unreferenced static libraries. It zips to 436KB. Would that be of any use to you? Merrill

2 1

Question about boost::filesystem::path
by Stewart Tootill 25 Nov '05

25 Nov '05

I've just run into an interesting problem with boost::filesystem::path and thought I would raise it somewhere. When I run the following code, compiled with MSVC7.1, on windows XP I get an exception thrown when calling some_path_function. The exception is causes by boost::filesystem::path's implicit conversion constructor constructing a path from a string using the posix path matching rules. Obviously I can correct the problem by always using the native path checker argument, and that is fine, but the fact that this is an implicit conversion makes it hard to spot and I (and my colleagues) are not always that awake :). So I suppose the question is a) can the default path checking function be changed in such a way that on windows platforms it validates the path using windows rules and on posix platforms using posix rules, or b) should the constructor at fault here be made explicit since it can really catch you out. #include <boost/filesystem/path.hpp> #include <boost/filesystem/exception.hpp> #include <iostream> #include <string> void some_path_function( const boost::filesystem::path& path ) { std::cout << "Got a path : " << path.native_file_string() << std::endl; } int main() { try { std::string winPath = "c:\\windows\\system32\\kernel32.dll"; some_path_function( winPath ); } catch ( boost::filesystem::filesystem_error& err ) { std::cerr << "An error occured : " << err.what() << std::endl; } return 0; } Stewart Tootill Senior Engineer [Digital Text] Tel: +44 118 984 2151 - Fax: +44 118 984 3939 mailto:stewart.tootill@softel.co.uk www.softel.co.uk ________________________________________________________________________ This e-mail has been scanned for viruses by MessageLabs.

2 1

program_options: Failure Demo
by Merrill Cornish 25 Nov '05

25 Nov '05

Below is a small program that demonstrates some of the problems I've been having. It takes one positional parameter, "limit" which is of type size_t. I'm linking statically with debug symbols. With the "try" in the position shown, after the declaration of vm, this is what happens to me for different command line arguments: * --limit=4 => works and prints limit=4 * --limt=4 => [notice misspelling] throws "unknown option limt" exception; but also triggers Dr. Watson: Application Error - The instruction at "0x0042eb49" referenced memory at "0x010900fb". The memory could not be "written". * --limit=-4 => [note negative value] never exits store(). Gets Dr. Watson "The instruction at "0x0049c090" referenced memory at "0x00eab651". The memory could not be "written. * --limit=xxx => [note string value] never exits store(). Get Dr. Watson with same message as above. Now, move the "try" to immediately after main() so all of the program options code is included in the try block. * --limit=4 => works as before * --limt=4 => [notice misspelling] Does NOT throw expected "unknown option" exception, never exits store(), but does trigger Dr. Watson, this time trying to read location 0xd. * --limit=-4 => similar error to above, with slightly different addresses. * --limt=xxx => similar error to above with slightly different addresses. Enjoy, Merrill //========================================== #include <iostream> #include "boost/program_options.hpp" using namespace std; namespace po = boost::program_options; int main(int argc, char* argv[]) { // try { po::options_description general("Option"); general.add_options() ("limit", po::value<size_t>()->default_value(1), " This is the concurrency limit."); po::variables_map vm; try { cout << "before store" << endl; po::store(po::command_line_parser(argc, argv). options(general).run(), vm); cout << "after store" << endl; po::notify(vm); if (vm.count("limit")) { cout << "limit=" << vm["limit"].as<size_t>() << endl; }//--version }//try catch (exception& e) { cerr << e.what() << endl; return 1; }//exception catch (...) { cerr << "unknown exception." << endl; return 1; }//... return 0; }//main() //=========================================

2 1

Re: [Boost-users] Bind, lambda and how to chain relative function calls
by Kerner, Jacques 25 Nov '05

25 Nov '05

Erratum : Please replace ReturnArg by AdaptToReturningFunction in the AdaptToReturningFunction class definition. JK -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Kerner, Jacques Sent: Thursday, November 24, 2005 4:54 PM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] Bind,lambda and how to chain relative function calls Hi, My example got a little bit more complicated. The Car::GetRigidBody function is : void Car::GetRigidBody(RigidBody & rb) instead of RigidBody & Car::GetRigidBody() So I have to write : bind ( &Position::GetX, bind ( &RigidBody::GetPosition, AdaptToReturningFunction<RigidBody>(bind(&Car::GetRigidBody, &car)) ) ) With a functor named AdaptToReturningFunction that transforms the first signature to the second : template<typename T> class AdaptToReturningFunction { public: ReturnArg(boost::function<void (T &)> f) : mF(f) {} T operator()() {T t; mF(t); return t;} private: boost::function<void (T &)> mF; }; Is there a simpler and better way of doing it without having to define AdaptToReturningFunction ? What if RigidBody was purely abstract (interface) ? Thank you. Jacques Kerner. -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Peter Dimov Sent: Thursday, November 24, 2005 3:41 AM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] Bind,lambda and how to chain relative function calls Kerner, Jacques wrote: > Hi, > > I would like to create a functor for calling functions in a chain like > this : > > car.GetRigidBody().GetPosition().GetX() > > What is the best way to do that using bind (and lambda ?) > > The car.GetRigidBody() is easy : bind(&Car::GetRigidBody, &car) , but > then I am a bit stuck. Note that I don't want to store the result of > car.GetRigidBody(). I want the final functor to call all the functions > everytime its operator() is called. So > > > bind ( > &Position::GetX, > &bind ( > &RigidBody::GetPosition, > &bind ( > > &Car::GetRigidBody, > &car > )() > )() > ) > > would not be acceptable... Just drop the invocations: bind ( &Position::GetX, bind ( &RigidBody::GetPosition, bind( &Car::GetRigidBody, &car) ) ) _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

1 0

Re: [Boost-users] Bind, lambda and how to chain relative function calls
by Kerner, Jacques 25 Nov '05

25 Nov '05

Hi, My example got a little bit more complicated. The Car::GetRigidBody function is : void Car::GetRigidBody(RigidBody & rb) instead of RigidBody & Car::GetRigidBody() So I have to write : bind ( &Position::GetX, bind ( &RigidBody::GetPosition, AdaptToReturningFunction<RigidBody>(bind(&Car::GetRigidBody, &car)) ) ) With a functor named AdaptToReturningFunction that transforms the first signature to the second : template<typename T> class AdaptToReturningFunction { public: ReturnArg(boost::function<void (T &)> f) : mF(f) {} T operator()() {T t; mF(t); return t;} private: boost::function<void (T &)> mF; }; Is there a simpler and better way of doing it without having to define AdaptToReturningFunction ? What if RigidBody was purely abstract (interface) ? Thank you. Jacques Kerner. -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Peter Dimov Sent: Thursday, November 24, 2005 3:41 AM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] Bind,lambda and how to chain relative function calls Kerner, Jacques wrote: > Hi, > > I would like to create a functor for calling functions in a chain like > this : > > car.GetRigidBody().GetPosition().GetX() > > What is the best way to do that using bind (and lambda ?) > > The car.GetRigidBody() is easy : bind(&Car::GetRigidBody, &car) , but > then I am a bit stuck. Note that I don't want to store the result of > car.GetRigidBody(). I want the final functor to call all the functions > everytime its operator() is called. So > > > bind ( > &Position::GetX, > &bind ( > &RigidBody::GetPosition, > &bind ( > > &Car::GetRigidBody, > &car > )() > )() > ) > > would not be acceptable... Just drop the invocations: bind ( &Position::GetX, bind ( &RigidBody::GetPosition, bind( &Car::GetRigidBody, &car) ) ) _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

1 0

How to build the boost library
by Sui Tam 24 Nov '05

24 Nov '05

Hi, I am trying to use the boost C++ serialization library. Can you point me to how I can build the library on the itanium system? Also I would like to get some leads as to how I should start. I try using the VC project files, however, I see compilation errors. Sui --------------------------------- Yahoo! Music Unlimited - Access over 1 million songs. Try it free.

4 4

Problem with boost::pool on MSVC8
by Georgios Diamantopoulos 24 Nov '05

24 Nov '05

Dear all, I am encountering a crash due to corrupted memory (_CrtIsValidHeapPointer assertion) when running a project that uses boost::fast_pool_allocator with std::list. This project is using mixed code. More specifically: - There is a native static library project named "KLT" which uses boost::fast_pool_allocator - klt.h is included in another, mixed (native+CLR) project where objects from klt.h are created The stack trace is shown below. It seems that this is a problem with static initialization of an object boost::pool makes. Does anyone have any idea as to what might be the problem? I am using the latest boost 1.33.1 compiled fresh with VC8. Thanks in advance. Best regards, Georgios STACK TRACE > msvcr80d.dll!_msize_dbg(void * pUserData=0xd0ac4d40, int nBlockUse=2) Line 1414 + 0x30 bytes C++ msvcr80d.dll!_dllonexit_nolock(int (void)* func=0x004219e0, void (void)* * * pbegin=0x0012e828, void (void)* * * pend=0x0012e820) Line 295 + 0xd bytes C msvcr80d.dll!__dllonexit(int (void)* func=0x004219e0, void (void)* * * pbegin=0x0012e828, void (void)* * * pend=0x0012e820) Line 273 + 0x11 bytes C MyVideoTool.exe!_onexit(int (void)* func=0x004219e0) Line 110 + 0x11 bytes C MyVideoTool.exe!atexit(void (void)* func=0x004219e0) Line 127 + 0x9 bytes C MyVideoTool.exe!boost::details::pool::singleton_default<boost::singleton_pool<boost::fast_pool_allocator_tag,80,boost::default_user_allocator_new_delete,boost::details::pool::win32_mutex,32>::pool_type>::instance() Line 83 + 0x32 bytes C++ MyVideoTool.exe!boost::details::pool::singleton_default<boost::singleton_pool<boost::fast_pool_allocator_tag,80,boost::default_user_allocator_new_delete,boost::details::pool::win32_mutex,32>::pool_type>::object_creator::object_creator() Line 66 + 0x28 bytes C++ MyVideoTool.exe!`dynamic initializer for 'boost::details::pool::singleton_default<boost::singleton_pool<boost::fast_pool_allocator_tag,80,boost::default_user_allocator_new_delete,boost::details::pool::win32_mutex,32>::pool_type>::create_object''() Line 50 + 0x28 bytes C++ [Managed to Native Transition] MyVideoTool.exe!_initterm(void** pfbegin = 0x00422214, void pfend = ) Line 130 C++ MyVideoTool.exe!<CrtImplementationDetails>::LanguageSupport::InitializeNative() Line 534 C++ MyVideoTool.exe!<CrtImplementationDetails>::LanguageSupport::_Initialize() Line 680 C++ MyVideoTool.exe!<CrtImplementationDetails>::LanguageSupport::Initialize() Line 824 + 0x9 bytes C++ MyVideoTool.exe!?.cctor@@$$FYMXXZ() Line 871 + 0x9 bytes C++ [Frames below may be incorrect and/or missing, no symbols loaded for mscorwks.dll] ntdll.dll!7c91b686() ntdll.dll!7c949e61() ntdll.dll!7c91b5f4()

1 0

Serialization of ptr_container
by Merrill Cornish 24 Nov '05

24 Nov '05

Since I can find no specific mention that ptr_container classes can be serialized, I assume that means they can NOT be serialized. Right? Merrill

3 3

about serialization
by czhu06-1＠yahoo.com.cn 24 Nov '05

24 Nov '05

Hi, I am using MSVC 7.1, and I need to use the boost_1_33_0 Serialization Library. But I can't make libs\serialization\example\demo.cpp work. It always pops memory alloc error. Can anybody kindly tell me how to make serialization library work? Thanks. --------------------------------- 雅虎邮箱超强增值服务－2G超大空间、pop3收信、邮件提醒

1 0

Re: [Boost-users] Bind, lambda and how to chain relative function calls
by Kerner, Jacques 24 Nov '05

24 Nov '05

Thank you. I did not realize that it could work that way too. That's really great!!! Jacques. -----Original Message----- From: boost-users-bounces(a)lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Peter Dimov Sent: Thursday, November 24, 2005 3:41 AM To: boost-users(a)lists.boost.org Subject: Re: [Boost-users] Bind,lambda and how to chain relative function calls Kerner, Jacques wrote: > Hi, > > I would like to create a functor for calling functions in a chain like > this : > > car.GetRigidBody().GetPosition().GetX() > > What is the best way to do that using bind (and lambda ?) > > The car.GetRigidBody() is easy : bind(&Car::GetRigidBody, &car) , but > then I am a bit stuck. Note that I don't want to store the result of > car.GetRigidBody(). I want the final functor to call all the functions > everytime its operator() is called. So > > > bind ( > &Position::GetX, > &bind ( > &RigidBody::GetPosition, > &bind ( > > &Car::GetRigidBody, > &car > )() > )() > ) > > would not be acceptable... Just drop the invocations: bind ( &Position::GetX, bind ( &RigidBody::GetPosition, bind( &Car::GetRigidBody, &car) ) ) _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

1 0

linking with visual studio .net 2003 and regex
by louis 24 Nov '05

24 Nov '05

Hi, I built regex as a library using the source (UNICODE char set but not with ICU support). I am able to link to the library in a console program but when I try and link to the library from an MFC project I get a bunch of unresolved errors. Here is one of them: myapp error LNK2019: unresolved external symbol "public: class boost::basic_regex<wchar_t,struct boost::regex_traits<wchar_t,class boost::w32_regex_traits<wchar_t> > > & __thiscall boost::basic_regex<wchar_t,struct boost::regex_traits<wchar_t,class boost::w32_regex_traits<wchar_t> > >::assign(wchar_t const *,wchar_t const *,unsigned int)" (?assign@?$basic_regex@_WU?$regex_traits@_WV?$w32_regex_traits@_W@boost@@@boost@@@boost@@QAEAAV12@PB_W0I@Z) referenced in function "public: class boost::basic_regex<wchar_t,struct boost::regex_traits<wchar_t,class boost::w32_regex_traits<wchar_t> > > & __thiscall boost::basic_regex<wchar_t,struct boost::regex_traits<wchar_t,class boost::w32_regex_traits<wchar_t> > >::assign(wchar_t const *,unsigned int)" (?assign@?$basic_regex@_WU?$regex_traits@_WV?$w32_regex_traits@_W@boost@@@boost@@@boost@@QAEAAV12@PB_WI@Z) Any help would be greatly appreciated

2 1

Serialization documentation suggestion
by Merrill Cornish 24 Nov '05

24 Nov '05

It would be useful to Boost serialization users if there were a section in the serialization documentation titled, say, "Serialization Data Types" with a list such as * all built-in C++ data primitives * all STL containers * all Boost smart pointer types * boost::variant and any other Boost types that can be serialized (boost::any? boost::mutex? etc.) As it stands now, the serialization documentation mentions some, but the comments are scattered. The documentation is silent on other Boost-created data types. Merrill

2 1

Re: [Boost-users] Serializing boost::variant?
by Merrill Cornish 24 Nov '05

24 Nov '05

Robert, >>> or you just do: >>> #include <boost/serialization/variant.hpp> I knew that a boost::variant data member in serialize() would compile, but--as the mathematicians say--the a necessary, but not sufficient condition. Thanks for verifying it. Merrill

1 0

about installation
by Johnny Wong 24 Nov '05

24 Nov '05

Hi, I am using Borland C++ compiler 5.5, and I need to use the Boost Graph Library. But I am new to C++, so I downloaded the boost_1_33_0 but I don't know how to install and make it work. I have read the getting started guide, but I cannot follow the instructions. Can anybody kindly tell me how to do? Thanks. _______________________________________ �x��ӍϢ - Yahoo! Messenger ��]��ϾW��Կ��ӍϢ�o�㣬��ϾW�r��κ��fԒ��ʧ�� http://messenger.yahoo.com.hk

1 0

Using Boost 1.33 with STLport 5.0 on MSVC71
by Wu Yinghui, Freddie 24 Nov '05

24 Nov '05

Dear all, I'm having a problem linking the simplest Boost unit_test program on the platform described above. More details here: Compiler: MSVC71 OS: WinXP Pro SP2 STLport 5.0 config: All default as obtained from CVS STLPORT_5_0 branch, except that I use /Zc:wchar_t to use wchar_t as built-in type. Boost 1.33/34: All default as obtained from CVS, built with the following command line: bjam --without-python "-sBUILD=debug release <runtime-link>static <threading>multi <stlport-version>5.0 <native-wchar_t>on <define>BOOST_SIGNALS_NAMESPACE=siglib" stage My simple unit_test program: ===== #include <string> #define BOOST_AUTO_TEST_MAIN #include <boost/test/auto_unit_test.hpp> BOOST_AUTO_UNIT_TEST( Test_Function ) { std::wstring string = L"some test string"; BOOST_CHECK( string.length() == 16 ); } ===== My project setting uses "Multi-threaded DLL (/MD)" in code gen, and links to "libboost_unit_test_framework-vc71-mt-sgdp.lib" in debug mode. My purpose was to use STLport in a DLL, but the whole Boost statically linked. (I know I can link with "libboost_unit_test_framework-vc71-mt-gdp.lib," but I want Boost to be statically linked.) The linker gives the following errors: stlportstld.5.0.lib(stlportstld.5.0.dll) : error LNK2005: "public: __thiscall stlpd_std::__owned_list::~__owned_list(void)" (??1__owned_list@stlpd_std@@QAE@XZ) already defined in libboost_unit_test_framework-vc71-mt-sgdp.lib(unit_test_suite.obj) stlportstld.5.0.lib(stlportstld.5.0.dll) : error LNK2005: "public: __thiscall stlpd_std::basic_string<char,class stlpd_std::char_traits<char>,class stlpd_std::allocator<char> >::~basic_string<char,class stlpd_std::char_traits<char>,class stlpd_std::allocator<char> >(void)" (??1?$basic_string@DV?$char_traits@D@stlpd_std@@V?$allocator@D@2@@stlpd_std@@QAE@XZ) already defined in libboost_unit_test_framework-vc71-mt-sgdp.lib(unit_test_suite.obj) stlportstld.5.0.lib(stlportstld.5.0.dll) : error LNK2005: "public: static void __cdecl stlpd_std::__node_alloc<1,0>::deallocate(void *,unsigned int)" (?deallocate@?$__node_alloc@$00$0A@@stlpd_std@@SAXPAXI@Z) already defined in libboost_unit_test_framework-vc71-mt-sgdp.lib(unit_test_suite.obj) stlportstld.5.0.lib(stlportstld.5.0.dll) : error LNK2005: "public: class stlpd_std::basic_string<char,class stlpd_std::char_traits<char>,class stlpd_std::allocator<char> > & __thiscall stlpd_std::basic_string<char,class stlpd_std::char_traits<char>,class stlpd_std::allocator<char> >::assign(char const *,unsigned int)" (?assign@?$basic_string@DV?$char_traits@D@stlpd_std@@V?$allocator@D@2@@stlpd_std@@QAEAAV12@PBDI@Z) already defined in libboost_unit_test_framework-vc71-mt-sgdp.lib(unit_test_log.obj) <more similar errors removed...> Is there any kind soul here can enlighten me a bit? Is it at all recommended (or even possible) to use STLport in DLL while statically linking with Boost? Cheers, Freddie -- Wu Yinghui, Freddie Research & Development Software Engineer Volume Interactions Pte Ltd 1 Kim Seng Promenade, #12-01 Great World City East Tower Singapore 237994 Tel: +65 62226962 (Ext 216) Fax: +65 62226215 Email: yhwu(a)volumeinteractions.com URL: http://www.volumeinteractions.com Important: This message is intended for the recipient(s) addressed above. It contains privileged and confidential information. If you are not the intended recipient, please notify the sender immediately by replying to this message and then delete it from your system. You must not read, copy, use, or disseminate this communication in any form. Thank you.

2 1

Boost IRIX build problems
by Jeroen Akershoek 24 Nov '05

24 Nov '05

Hello, I'm trying to build boost on our SGI Onyx4 and am running into some problems. I've tried looking up some documentation for configuring the build-system a bit better, but couldn't find much. I don't have the time to dig into it and find it out myself, especially since building boost isn't my ultimate goal for this exercise, so I'm hoping you can help me out here I'm getting (a lot of occurances of) three errors throughout the build: 1) the indicated type is incomplete std::basic_istream<charT> m_is; // stream for parsing numbers. Not sure about this one. Missing include somewhere or maybe SGIs STL is f00bar 2) The indicated enumeration value is out of "int" range. enum npos_type { npos = (size_type)-1 }; I assume it's the same problem as with IBMCPP. Don't know if MIPSpro can have 64-bits enums. 3) Threading is disabled: _SGI_MP_SOURCE is undefined If somebody could help me out with these, I'd be very grateful. My environment is IRIX 6.5.27 with MIPSpro 7.41, bjam 3.1.11 and I'm trying boost 1.33.0. I've modified the tools/build/v1/mipspro-tool.jam to use -64 and -mips4 as default. Probably not the way to do it, but I couldn't find the "proper" way within decent time Kind regards, Jeroen -- Jeroen Akershoek SARA - High Performance Computing & Visualization dep. tel: +31 20 5923000 fax: +31 20 6683167 Draco dormiens nunquam titillandus

4 5

Complaint about Current Boost Build System
by Wu Yinghui, Freddie 24 Nov '05

24 Nov '05

Hi all, Sorry for this e-mail, since it is more of a complaint. But I do feel the urge to raise this problem to the community so that some solution could be derived soon. The current build system (1.33/34 from CVS) creates subdirectories for each variant/ subvariant specified in the BUILD environment. When more user customizations are specified, the consequence of this is very deep directory structures. Nonetheless, some OSes imposes stringent limits on how long a path can go (e.g., Win2k/XP limits a path name to be 259 characters long maximum). There causes big problem with the building system when error can occur from nowhere in Boost source code itself. This constraint effectively limits how much customization a user can make (e.g., I had to remove some additional optimization/ tuning parameters for subvariants, and SUBST'ed the Boost directory in order to reduce the path name length). So my question is, why can we not be smarter in this to derive alternatives to make the directory structure shallower (or, simply reduce the length of the names of each subvariant directory)? Sorry again if this sound too demanding, but I do consider it an important usability limitation of the current Boost build system. Cheers, Freddie -- Wu Yinghui, Freddie Research & Development Software Engineer Volume Interactions Pte Ltd 1 Kim Seng Promenade, #12-01 Great World City East Tower Singapore 237994 Tel: +65 62226962 (Ext 216) Fax: +65 62226215 Email: yhwu(a)volumeinteractions.com URL: http://www.volumeinteractions.com Important: This message is intended for the recipient(s) addressed above. It contains privileged and confidential information. If you are not the intended recipient, please notify the sender immediately by replying to this message and then delete it from your system. You must not read, copy, use, or disseminate this communication in any form. Thank you.

2 1

Serializing boost::variant?
by Merrill Cornish 24 Nov '05

24 Nov '05

If I have a boost::variant data member I want to serialize, it looks like I'm going to have to use boost::static_visitor and boost::apply_visitor in the serialize() method. However, there is some black magic going on with the ar & dataMember; statements. Any pointers as to how I do it? Merrill

2 1

Bind, lambda and how to chain relative function calls
by Kerner, Jacques 24 Nov '05

24 Nov '05

Hi, I would like to create a functor for calling functions in a chain like this : car.GetRigidBody().GetPosition().GetX() What is the best way to do that using bind (and lambda ?) The car.GetRigidBody() is easy : bind(&Car::GetRigidBody, &car) , but then I am a bit stuck. Note that I don't want to store the result of car.GetRigidBody(). I want the final functor to call all the functions everytime its operator() is called. So bind ( &Position::GetX, &bind ( &RigidBody::GetPosition, &bind ( &Car::GetRigidBody, &car )() )() ) would not be acceptable... Any help greatly appreciated Jacques Kerner

3 2