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Re: Way to print a route between two nodes
by Gustavo Sÿffffe1nchez 01 Aug '04

01 Aug '04

I don't know exactly how you are traversing those nodes in the path, - ie how do find the path -, but as far as I know you have to use a visitor with an algorithm such as dijisktra shortest paths, so you define the event point, on_finish_vertex for example where you want the visitor to be called. This algorithm also stores in a vector the minimum weight pahts encountered from an specific origin vertex so you can go over those paths from the last vertex to this origin. Hope to be of help ------------------------------ Message: 10 Date: Thu, 29 Jul 2004 15:33:34 +0200 From: Daniele Carlucci Subject: [Boost-users] Way to print a route between two nodes To: boost-users(a)lists.boost.org Message-ID: <4108FCAE.8040301(a)email.it> Content-Type: text/plain; charset=us-ascii; format=flowed Hi all, there is a way to print a route between two nodes? If I have for ie: 8 nodes. A possible route is 1->3->2->6->8 How can I print it? I have only seen that it's used the way to print for every node, all the nodes near that one. Thanks Daniele ------------------------------ ---------------------------------

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serialization for indexed_set?
by Jedediah Smith 01 Aug '04

01 Aug '04

I'm trying to write generic boost::serialization functions for boost:indexed_set and I'm in a bit over my head. The serialization docs say to use something like the following for generic types: template<class Archive, class T> inline void save( Archive & ar, const std::auto_ptr<T> &t, const unsigned int file_version ){ ar << t.get(); } This is a non-intrusive save function for std::auto_ptr. The tricky thing is that the template parameters for indexed_set are much more complicated and the default index may either be regular (set-like) or sequenced (list-like). How would this be handled?

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boost for visual c++
by Jean-Michel besnard 01 Aug '04

01 Aug '04

Hi, How can I install the lib boost::random to use it within Visual C++ (6) ? Is there a built library to be downloaded somewhere or do I have to build it myself ? JM

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std::map(pair) and boost::bind
by Vytautas Leonavicius 30 Jul '04

30 Jul '04

I am often facing the same thing again and again. Say I have a map: map< int, Foo* > m; and I would like to invoke method of Foo on all instances std::for_each(m.begin(), m.end(), boost::bind(&Foo::method, _1 ); The problem is that map contains pair of key and value, not Foo*. Usually I create some function taking pair and invoking method needed on .second. But maybe there is another way to do that? Thanks! Vytautas

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RE: [Boost-users] Re: Bjam- racking my brain
by Brian Braatz 29 Jul '04

29 Jul '04

> Brian Braatz wrote: > > >> Rene Rivera Wrote: > >>build/v2 is not used for building Boost. It's the experimental, and > > > > I am sorry - I am confused and am trying to find my way out: > > > > *- What is listed for download on sourceforge does not reference a > > version of build v1 or bjam v1 or what have you. ( I am confused as to > > how to get the older version) > > OK, some explanation... In SF there are 2 downloads: boost-build-2.0-* > and boost-jam-3.1.*. That boost-build-2.0 is the version 2 I mentioned > which is the experimental version. boost-jam-3.1.* is the scripting > engine BJam (based on Perforce Jam & FreeType Jam) that both V1 and V2 > run on top of. > (snip) Just wanted to thank you Rene for helping me get my head straight on this. I am compiling now with Boost.Build. I have run into another issue that I will be posting on the bjam list (thank you for pointing me to that), but life is definitely nicer. Boost is awesome all by itself, but without the support of the community for those of us getting our heads around these things, boost would not be able to grab more users.

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boost lambda
by Mattias Brändström 29 Jul '04

29 Jul '04

Hello! I am new to the boost lambda library so this might be a naive question. Here goes. This is what I want to do: class Foo { public: int bar() { return 42; } }; int main() { std::vector<Foo> v; v.push_back(Foo()); count_if(v.begin(), v.end(), boost::bind(&Foo::bar, _1) == 42); return 0; } However, I get a comilation error when trying to compile this with g++ version 3.3.2: test.cpp: In function `int main()': test.cpp:17: error: no match for 'operator==' in '`empty_class_expr' not test.cpp:17: sorry, unimplemented: supported by dump_expr test.cpp:17: sorry, unimplemented: boost::bind(R (T::*)(), A1) [with R = int, T = Foo, A1 = boost::arg<1>]((<unnamed>::_1, <expression error>)) == 42' To me it seems that this is something that I should be able to do with the BLL. If someone could point me in the right direction here I would be really greatful! Thanks in advance! Regards, Mattias

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Error Linking Boost Example
by Yuen, Samuel 29 Jul '04

29 Jul '04

Hello folks, I am trying to use boost here and I keep getting the following error when trying to compile dates_as_strings.cpp example: Prelinker invoked. Parsing line from ld: Prelink undefined symbol: get_month_map_ptr__Q25boost9gregorian10greg_monthXv Prelink undefined symbol: _ZTVSt9exception Prelink undefined symbol: _ZTVSt11logic_error Prelink undefined symbol: _ZNSt6localeD1Ev Prelink undefined symbol: _ZNSspLEc Prelink undefined symbol: _Znwm Prelink undefined symbol: _ZNSt11logic_errorD2Ev Prelink undefined symbol: __register_frame_info_table Prelink undefined symbol: __deregister_frame_info Prelink undefined symbol: _ZSt9use_facetISt5ctypeIcEERKT_RKSt6locale Prelink undefined symbol: _ZNKSs2atEm Prelink undefined symbol: _ZNKSs6lengthEv Prelink undefined symbol: _ZNSt6localeC1EPKc Prelink undefined symbol: _ZNSsC1Ev Prelink undefined symbol: _ZNSt12out_of_rangeC2ERKSs Prelink undefined symbol: _ZNSt8ios_base4InitD1Ev Prelink undefined symbol: _ZNSt8ios_base4InitC1Ev Prelink undefined symbol: _ZNSt24__default_alloc_templateILb1ELi0EE10deallocateEPvm Prelink undefined symbol: _ZNSt24__default_alloc_templateILb1ELi0EE8allocateEm Prelink undefined symbol: _ZNKSs7compareERKSs Prelink undefined symbol: _ZNKSt9type_infoeqERKS_ Prelink undefined symbol: __cxa_end_catch Prelink undefined symbol: __cxa_rethrow Prelink undefined symbol: __cxa_begin_catch Prelink undefined symbol: _ZNSsC1ERKSs Prelink undefined symbol: _ZNSsD1Ev Prelink undefined symbol: _ZNSsaSERKSs Prelink undefined symbol: _ZNSsaSEPKc Prelink undefined symbol: _ZNSaIcED1Ev Prelink undefined symbol: _ZNSsC1EPKcRKSaIcE Prelink undefined symbol: _ZNSaIcEC1Ev Prelink undefined symbol: _ZNSt9exceptionD2Ev Prelink undefined symbol: __cxa_throw Prelink undefined symbol: __cxa_allocate_exception Prelink undefined symbol: _Unwind_Resume Prelink undefined symbol: _ZdlPv Prelink undefined symbol: __gxx_personality_v0 Prelink undefined symbol: __cxa_pure_virtual Prelink undefined symbol: _ZTISt11logic_error Prelink undefined symbol: _ZNKSt11logic_error4whatEv Prelink undefined symbol: _ZTVN10__cxxabiv117__class_type_infoE Prelink undefined symbol: _ZTVN10__cxxabiv120__si_class_type_infoE Prelink undefined symbol: as_long_string__CQ25boost9gregorian12greg_weekdayXv Prelink undefined symbol: as_long_string__CQ25boost9gregorian10greg_monthXv Prelink undefined symbol: as_short_string__CQ25boost9gregorian10greg_monthXv ld: Unresolved: boost::gregorian::greg_month::get_month_map_ptr(void) boost::gregorian::greg_weekday::as_long_string(void) const boost::gregorian::greg_month::as_long_string(void) const boost::gregorian::greg_month::as_short_string(void) const The compiler command is: cxx -I/desenv/syuen/tmp/boost_1_31_0 -L/desenv/syuen/tmp/boost_1_31_0/stage/lib -lboost_date_time-gcc-mt-d-1_31 -pthread -o dates_as_strings -D__USE_STD_IOSTREAM -ptv -ptr ./cxx_repository dates_as_strings.cpp The compiler version is: >cxx -V Compaq C++ V6.5-014 for Compaq Tru64 UNIX V5.1A (Rev. 1885) Compiler Driver V6.5-014 (cxx) cxx Driver I have compiled the library using gcc compiler set: export GXX="g++ -pthread" bjam "-sTOOLS=gcc" stage I would appreciate any help. Regards, > Samuel Yuen > System Analyst - PDC > Atos Origin > Rua Itapaiuna 2434 São Paulo / SP > Brazil > Phone +55 (11) 2183-2035 > Mobile +55 (11) 8112-6361 > Fax + 55 (11) 2183-2113 > samuel.yuen(a)atosorigin.com > www.atosorigin.com > > This e-mail and the documents attached are confidential and intended > solely for the addressee; it may also be privileged. If you receive this > e-mail in error, please notify the sender immediately and destroy it. > > As its integrity cannot be secured on the Internet, the Atos Origin > groupliability cannot be triggered for the message content. Although the > sender endeavours to maintain a computer virus-free network, the sender > does not warrant that this transmission is virus-free and will not be > liable for any damages resulting from any virus transmitted. >

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Re: [Boost-users] Running boost::thread compiled on w2k on XP
by Paul Grenyer 29 Jul '04

29 Jul '04

Hi > Is it impossible to compile the boost libraries on > windows 2000 and then expect the created dll:s to work on windows XP? No. It is not impossible. We have done exactly that without any problem at all. We didn't have to do anything special either. We used VC7.1 on Windows 2000, just as you are. I know that's not much practiacl help, but at least you now know it can be done. Regards Paul Paul Grenyer Email: paul(a)paulgrenyer.co.uk Web: http://www.paulgrenyer.co.uk Have you met Aeryn: http://www.paulgrenyer.co.uk/aeryn/? Version 0.3.0 beta now available for download.

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Running boost::thread compiled on w2k on XP
by Ragnar Ouchterlony 29 Jul '04

29 Jul '04

I have tried compiled boost::thread for windows using visual c++ from the visual studio .net 2003 suite. It compiles fine and I can compile things with the created libraries. However, when I move my program and the boost::thread dll:s from windows 2000 to another machine running windows XP, the program just prints out a blank line and exits without any other message. Attached is a program I have used to test out that it is this that is wrong. What have I done wrong? Is it impossible to compile the boost libraries on windows 2000 and then expect the created dll:s to work on windows XP? If this is the case, where can I get hold of the boost::thread libraries for vc71 compiled specifically for windows XP? If not, what could be wrong? /Ragnar Ouchterlony

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uBLAS syntax issues
by Nicholas Andrews 29 Jul '04

29 Jul '04

Here's the formula I want to reproduce in uBLAS: K=P*Mt*(M*P*Mt+R)^-1 Where K, P, M, and R are matrices, and Mt is the transpose of M. I have written the following function: void multi_state_kf::compute_gain(const matrix<double>& dev) { matrix<double> temp=prod(M,newP); matrix<double> transM=trans(M); matrix<double> A=(prod(temp,transM)+dev); permutation_matrix<size_t> pm(A.size2()); lu_factorize(A, pm); matrix<double> el = prod(newP,transM); lu_substitute(A, pm, el); K=el; } This function was completely hacked together as I'm new to uBLAS (and rusty with linear algebra), but it got rid of most of my compile errors. Now only a few remain but I'm not sure what I'm doing wrong. I'm hoping that it will be obvious to someone here. Thanks for your help, Nick

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Assign and MultiArray conflict with precompiled headers
by Bruno Martínez Aguerre 28 Jul '04

28 Jul '04

Hi. I'm trying out the recently accepted Assign library, and also the MultiArray library, which is new to me. I'm in VC7.1, and using the post review version of Assign. Depending on the order I include the libraries in my precompiled header, the linker complains about double definition of MultiArray's extents object. Here are the files that reproduce the problem. //stdafx.h #pragma once #include "boost/multi_array.hpp" #include "boost/assign.hpp" //main.cpp #include "stdafx.h" int main() { boost::multi_array<int, 2> t(boost::extents[3][4]); } I couldn't find relation between the two libraries. Thanks in advance, Bruno Martínez

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Date Time lib and time_t
by Matt Schuckmann 28 Jul '04

28 Jul '04

Has anybody ever implimented a to_time_t function/method for the ptime class to create a time_t from a ptime. I tried doing it similar to the way from_time_t does it but I'm not getting the right answer. It's nice that you can convert from a time_t for use with legacy code but sometimes you need to go back the other way. Herer is my to_time_t function that does not appear to be working inline std::time_t to_time_t(ptime t) { if( t == neg_infin ) return 0; else if( t == pos_infin ) return LONG_MAX; ptime start(gregorian::date(1970,1,1),time_duration(0,0,0)); return (t-start).total_seconds(); } Thanks,

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RE: [Boost-users] Re: Running boost::thread compiled on w2k on XP
by Paul Rose 28 Jul '04

28 Jul '04

This also isn't exactly what you are looking for, but I took built your test.cpp on vc7.1 running on windows XP using boost 1.31 (also built with vc7.1 running on windows XP). Both the debug (using boost_thread-vc71-mt-gd-1_31.dll) and the release (using boost_thread-vc71-mt-1_31.dll) builds of test.cpp worked fine. My boost dlls were built with all default settings (except I used the alternate namespace hack for boost::signals since we also use Qt). I don't have a boost 1.31 built on win2k to try. > >Perhaps I should add that I am using version 1.31 of boost. I have also >discovered that it seems (it might be an illusion, you never know) to work >when I compile against boost_thread-vc71-mt-gd-1_31.lib, but not against >the release lib boost_thread-vc71-mt-1_31.lib. >/Ragnar Ouchterlony _________________________________________________________________ Overwhelmed by debt? Find out how to Dig Yourself Out of Debt from MSN Money. http://special.msn.com/money/0407debt.armx

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[boost.build] Patch for python.jam
by Markus Schöpflin 28 Jul '04

28 Jul '04

Hello, attached is a patch for pyhton.jam which allows to use python installation on Unix which have been configured with different prefix and exec-prefix. Currently this is not supported by boost.build. The patch simply adds the missing include directory to the compiler command line as recommended in http://www.python.org/doc/2.3.4/api/includes.html . After applying the patch you can either use bjam -sPYTHON_ROOT=<prefix> or bjam -sPYTHON_ROOT=<prefix> -sPYTHON_EXEC_ROOT=<exec prefix> Markus --- net/src/orig/boost_1_31_0/tools/build/v1/python.jam 2004-01-28 23:52:25.000000000 +0100 +++ local/src/boost_1_31_0/tools/build/v1/python.jam 2004-07-28 16:15:37.000000000 +0200 @@ -118,7 +118,7 @@ { PYTHON_ROOT ?= /usr/local ; PYTHON_ROOT = $(PYTHON_ROOT:J=" ") ; - PYTHON_INCLUDES ?= $(PYTHON_ROOT)/include/python$(PYTHON_VERSION) ; + PYTHON_INCLUDES ?= $(PYTHON_ROOT)/include/python$(PYTHON_VERSION) $(PYTHON_EXEC_ROOT)/include/python$(PYTHON_VERSION) ; PYTHON_LIB_PATH ?= $(PYTHON_ROOT)/lib/python$(PYTHON_VERSION)/config ; PYTHON_PROPERTIES ?=

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RE: [Boost-users] Re: Bjam- racking my brain
by Brian Braatz 28 Jul '04

28 Jul '04

> > Brian Braatz wrote: > > > Any help would be appreciated, tomorrow afternoon I am going to go back > > at it, and this time I might "get all medieval" about things :) > Rene Rivera Wrote: > build/v2 is not used for building Boost. It's the experimental, and > under development, next version of Boost.Build. If you plan on using > BBv2 read its separate documentation at > boost-root/tools/build/v2/index_v2.html I am sorry - I am confused and am trying to find my way out: *- What is listed for download on sourceforge does not reference a version of build v1 or bjam v1 or what have you. ( I am confused as to how to get the older version) * when I build the code in jam_src and run it- it reports: Boost.Jam Version 3.1.8. OS=NT. This is the same version I used to build boost with (successfully) with vc7.1. I am using the source for bjam included in the 1.31 release of boost * when I try to build boost with a simple bjam stage at the root dir of boost, it succeeds * when I double check the BOOST_ROOT env var with a dir command- it shows me the right dir * my TOOLS envvar is set to TOOLS=vc7.1 This was necessary before being able to build boost * when I CD into the HELLO example for bjam and try a Bjam I GET warning: no toolsets are configured. warning: you won't be able to build C++ programs. warning: please consult the documentation. C:/Data/Rmtg/Root/_Common/_Lib/Boost/V_1_31/tools/build/v2/build\targets .jam:1073: in construct from module object(exe-t arget-class)@1 error: unable to construct ./hello C:/Data/Rmtg/Root/_Common/_Lib/Boost/V_1_31/tools/build/v2/build\targets .jam:914: in object(exe-target-class)(a)1.generate from module object(exe-target-class)@1 C:/Data/Rmtg/Root/_Common/_Lib/Boost/V_1_31/tools/build/v2/build\targets .jam:510: in generate-really from module object( main-target)@1 C:/Data/Rmtg/Root/_Common/_Lib/Boost/V_1_31/tools/build/v2/build\targets .jam:483: in object(main-target)(a)1.generate from module object(main-target)@1 C:/Data/Rmtg/Root/_Common/_Lib/Boost/V_1_31/tools/build/v2/build\targets .jam:179: in object(project-target)(a)1.generate f rom module object(project-target)@1 C:/Data/Rmtg/Root/_Common/_Lib/Boost/V_1_31/tools/build/v2\build-system. jam:160: in load from module build-system C:\Data\Rmtg\Root\_Common\_Lib\Boost\V_1_31\tools\build\v2\example\..\ke rnel\modules.jam:259: in import from module modu les C:\Data\Rmtg\Root\_Common\_Lib\Boost\V_1_31\tools\build\v2\example\..\ke rnel\bootstrap.jam:120: in boost-build from modu le C:\Data\Rmtg\Root\_Common\_Lib\Boost\V_1_31\tools\build\v2\example\boost -build.jam:2: in module scope from module When I TRY: bjam -sTOOLS=vc7.1 bjam "-sTOOLS=vc7.1" bjam debug bjam release bjam "-sTOOLS=vc7.1" debug bjam "-sTOOLS=vc7.1" release I always get the above errors If I COPY the files in \tools\build\v2\example\hello to the ROOT of boost (and overwrite the jam file there)- IT DOES BUILD PROPERLY I have build bjam and stepped through it in the IDE and was not able to make much of what the source was doing (other than it looks like a lot of recursive parsing of files) (spent most of my evening yesterday doing that. MY QUESTIONS: * Which is the right version of boost to be running here? * does the \tools\build\v2\example\hello sample bjam compile for anyone else? (i.e. is it broken?) * is there a good sample of a simple working example for bjam somewhere else? * Any ideas on why I can BUILD BOOST but not any of the subprojects (everything else I have tried has the same problems) * How do you folks debug this thing- ****any**** techniques would be helpful * is the toolsets it is complaining about the COMPILER (i.e. TOOLS envvar?) or is it something else entirely? * HELP ! :) I am doing this pain because I am trying to get boost defined as the standard in my company (It is within my power to do that). I would also like to use the bjam tool as our standard build tool, but I FIRST need to figure out how to build projects with it (grin). Thanks to anyone for thoughts or things to try. Thanks Brian C Braatz

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Difference in adjacency_list
by Daniele Carlucci 27 Jul '04

27 Jul '04

Hi, I'm a newby. Anyone can explain me the difference between: typedef adjacency_list<listS, vecS, undirectedS... and typedef adjacency_list<vecS, vecS, undirectedS... Thanks Daniele

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Bjam- racking my brain
by Brian Braatz 27 Jul '04

27 Jul '04

For the last several days (a few hours each day) I have been trying to get the \tools\build\v2\example\hello sample to build with bjam- (windows XP, vc7.1) I CAN build boost from the command line, but when I move into the \tools\build\v2\example\hello dir and try various combinations of bjam (with and without -sTools=vc7.1 etc..) I get the same error no matter what I do. I took the bjam sources and compiled a debug version in the Visual Studio IDE, and have spent the evening stepping through the code and reading the docs. This is one of these things I think that I just have to completely internalize how this thing works before I will crack this. What I am asking for from this list: * Any basic advice on debugging what bjam is doing * any basic advice or good sample that is a bare and working bjam project to look at * This is weird to me, as the ENV var for the toolset DOES work for building boost itself * I feel like I am missing something obvious and stupid, anyone who wishes to point out what dumb thing I missed, please go at it :) * any help in looking at this output: C:\Data\Rmtg\Root\_Common\_Lib\Boost\V_1_31\tools\build\v2\example\hello >bjam warning: no toolsets are configured. warning: you won't be able to build C++ programs. warning: please consult the documentation. C:/Data/Rmtg/Root/_Common/_Lib/Boost/V_1_31/tools/build/v2/build\targets .jam:1073: in construct from module object(exe-t arget-class)@1 error: unable to construct ./hello C:/Data/Rmtg/Root/_Common/_Lib/Boost/V_1_31/tools/build/v2/build\targets .jam:914: in object(exe-target-class)(a)1.generate from module object(exe-target-class)@1 C:/Data/Rmtg/Root/_Common/_Lib/Boost/V_1_31/tools/build/v2/build\targets .jam:510: in generate-really from module object( main-target)@1 C:/Data/Rmtg/Root/_Common/_Lib/Boost/V_1_31/tools/build/v2/build\targets .jam:483: in object(main-target)(a)1.generate from module object(main-target)@1 C:/Data/Rmtg/Root/_Common/_Lib/Boost/V_1_31/tools/build/v2/build\targets .jam:179: in object(project-target)(a)1.generate f rom module object(project-target)@1 C:/Data/Rmtg/Root/_Common/_Lib/Boost/V_1_31/tools/build/v2\build-system. jam:160: in load from module build-system C:\Data\Rmtg\Root\_Common\_Lib\Boost\V_1_31\tools\build\v2\example\..\ke rnel\modules.jam:259: in import from module modu les C:\Data\Rmtg\Root\_Common\_Lib\Boost\V_1_31\tools\build\v2\example\..\ke rnel\bootstrap.jam:120: in boost-build from modu le C:\Data\Rmtg\Root\_Common\_Lib\Boost\V_1_31\tools\build\v2\example\boost -build.jam:2: in module scope from module C:\Data\Rmtg\Root\_Common\_Lib\Boost\V_1_31\tools\build\v2\example\hello >set TOOLs TOOLS=vc7.1 Any help would be appreciated, tomorrow afternoon I am going to go back at it, and this time I might "get all medieval" about things :)

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long long support with GCC
by Aaron W. LaFramboise 27 Jul '04

27 Jul '04

Hi, As I'm sure you know, long long and unsigned long long are supported by GCC in C++. However, -std=c++98 (not quite sure why, to be honest) and -pedantic cause lots of warnings and errors to be generated in the Boost headers when long long is used. In my project, it is desirable to use these flags for other reasons, but the effect these flags have on the Boost headers is decidedly undesirable. So far, I've been wrapping the Boost headers in forwarding headers that mark the Boost headers as system headers so that they compile without warning or error. Is there any disadvantage to doing this? GCC supports long long even with the above options, but only if __extension__ is used. I notice that there a Boost-standard 64bit type, boost::int64_t. Is there some reason that this can't be typedef'ed using the GCC extension, and then this identifier used in all places where 'long long' is being used? Are there type system rules that prevent this, or some other reason? Thank you for your consideration, Aaron W. LaFramboise

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building boost on vc7.1 with stlport
by tweety 26 Jul '04

26 Jul '04

i first compiled (succesfully) stlport 4.6.2. then i ran "bjam "-sTOOLS=vc7.1-stlport" install" and it failed compiling the regex library. then i manually went to the libs\regex\build folder and ran "nmake /f vc7.1-stlport clean install" and it compiled the first thing ok and the 2nd time around threw a LOT of linker errors (well, only ~49, but they're stl-style-long :D). I set correctly the STLPORT_VERSION and the STLPORT_PATH env vars, the tools were loaded ok, the INCLUDE env var had stlport's include dir first... AND IT COMPILED OK the first one... here's a screenshot of the last page of errors. please help me... winstances.obj : error LNK2019: unresolved external symbol "__declspec(dllimport ) public: __thiscall _STL::basic_string<wchar_t,class _STL::char_traits<wchar_t> ,class _STL::allocator<wchar_t> >::basic_string<wchar_t,class _STL::char_traits< wchar_t>,class _STL::allocator<wchar_t> >(wchar_t const *,unsigned int,class _ST L::allocator<wchar_t> const &)" (__imp_??0?$basic_string@_WV?$char_traits@_W@_ST L@@V?$allocator@_W@2@@_STL@@QAE@PB_WIABV?$allocator@_W@1@@Z) referenced in funct ion "public: class _STL::basic_string<wchar_t,class _STL::char_traits<wchar_t>,c lass _STL::allocator<wchar_t> > __fastcall boost::reg_expression<wchar_t,class b oost::regex_traits<wchar_t>,class _STL::allocator<wchar_t> >::str(void)const " ( ?str@?$reg_expression@_WV?$regex_traits@_W@boost@@V?$allocator@_W@_STL@@@boo st@@ QBI?AV?$basic_string@_WV?$char_traits@_W@_STL@@V?$allocator@_W@2@@_STL@@XZ) winstances.obj : error LNK2019: unresolved external symbol "__declspec(dllimport ) public: int __thiscall _STL::basic_string<wchar_t,class _STL::char_traits<wcha r_t>,class _STL::allocator<wchar_t> >::compare(class _STL::basic_string<wchar_t, class _STL::char_traits<wchar_t>,class _STL::allocator<wchar_t> > const &)const " (__imp_?compare@?$basic_string@_WV?$char_traits@_W@_STL@@V?$allocator@_W@2@@ _S TL@@QBEHABV12@@Z) referenced in function "public: int __fastcall boost::reg_expr ession<wchar_t,class boost::regex_traits<wchar_t>,class _STL::allocator<wchar_t> >::compare(class boost::reg_expression<wchar_t,class boost::regex_traits<wchar_ t>,class _STL::allocator<wchar_t> > const &)const " (?compare@?$reg_expression@_ WV?$regex_traits@_W@boost@@V?$allocator@_W@_STL@@@boost@@QBIHABV12@@Z) winstances.obj : error LNK2019: unresolved external symbol "__declspec(dllimport ) public: class _STL::basic_string<wchar_t,class _STL::char_traits<wchar_t>,clas s _STL::allocator<wchar_t> > & __thiscall _STL::basic_string<wchar_t,class _STL: :char_traits<wchar_t>,class _STL::allocator<wchar_t> >::assign(unsigned int,wcha r_t)" (__imp_?assign@?$basic_string@_WV?$char_traits@_W@_STL@@V?$allocator@_W@2@ @_STL@@QAEAAV12@I_W@Z) referenced in function "private: struct boost::re_detail: :re_syntax_base * __fastcall boost::reg_expression<wchar_t,class boost::regex_tr aits<wchar_t>,class _STL::allocator<wchar_t> >::compile_set_aux(class boost::re_ detail::jstack<class _STL::basic_string<wchar_t,class _STL::char_traits<wchar_t> ,class _STL::allocator<wchar_t> >,class _STL::allocator<wchar_t> > &,class boost ::re_detail::jstack<class _STL::basic_string<wchar_t,class _STL::char_traits<wch ar_t>,class _STL::allocator<wchar_t> >,class _STL::allocator<wchar_t> > &,class boost::re_detail::jstack<unsigned long,class _STL::allocator<wchar_t> > &,class boost::re_detail::jstack<class _STL::basic_string<wchar_t,class _STL::char_trait s<wchar_t>,class _STL::allocator<wchar_t> >,class _STL::allocator<wchar_t> > &,b ool,struct boost::re_detail::_narrow_type const &)" (?compile_set_aux@?$reg_expr ession@_WV?$regex_traits@_W@boost@@V?$allocator@_W@_STL@@@boost@@AAIPAUre_sy ntax _base@re_detail@2@AAV?$jstack@V?$basic_string@_WV?$char_traits@_W@_STL@@V?$a lloc ator@_W@2@@_STL@@V?$allocator@_W@2@@42@0AAV?$jstack@KV?$allocator@_W@_STL@@@ 42@0 _NABU_narrow_type@42@@Z) vc71-stlport/boost_regex-vc71-mt-p-1_31.dll : fatal error LNK1120: 49 unresolved externals NMAKE : fatal error U1077: 'link' : return code '0x460' Stop. ---------------------------------- Peace and love, Tweety mitea(a)sympatico.ca - tweety_04_01(a)users.sourceforge.net YahooID: tweety_04_01

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RE: [Boost-users] using boost::shared_ptr with boost::signal
by Ben Hutchings 26 Jul '04

26 Jul '04

Oliver Kowalke <oliver.kowalke(a)t-online.de> wrote: > Hi, > > I want to use boost::shared_ptr with boost::signal. > > class A > { > private: > int _i; > public: > A() : _i( 0) {} > > void operator()( int, std::string & s) > { i+= 1; } > > void operator()( std::string & s, int) > { i+= 2; } > }; > > boost::shared_ptr< A > a( new A() ); > boost::signal< void( int, std::string &) > rsig; > boost::singal< void( std::string &, int) > lsig; > > rsig.connect( a); > lsig.connect( a); > > rsig(0,"called from right side"); > lsig("called from left side",0); > > Because a is a smart_ptr this code would not compile because > operator() is not a member function. If I dereference the smart > pointer when I connect to signal, changes of a are never know > by the other signal instance. > Maybe I can use a proxy class which aggregates the smart pointer > but maybe there is a better solution?! As a general rule, functors are expected to be copiable and not to have mutable state of their own. So how about putting the shared_ptr inside A instead: class A { private: boost::shared_ptr<int> _i; public: A() : _i(new int(0)) {} void operator()(int, std::string & s) { *_i += 1; } void operator()(std::string & s, int) { *_i += 2; } }; A a;

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regex bug (regex_search throws bad_expression)
by Adam Molnar 26 Jul '04

26 Jul '04

hi! using the latest regex patch and vc7.1 i've accidentally encountered the following: ... regex re("([^\n]*\\n+\\s+)+NEEDEDSUBITEM2:[^\\s]"); bool matched = regex_search(text, re); // bad_expression ... i figured out those \\s -s may cause the problem. sample text attached. and one question: having "DATA.*?ITEM1(ITEM2)?" and an input like "DATA ITEM1 ITEM1ITEM2" should ITEM2 be extracted? i think it would be good to make a note on this case in the doc. yours, adam begin 666 match_test.txt M#0I)5$5-5%E014$Z#0H@(" @4U5"251%33$Z('AX> T*#0H@(" @3D5%1$5$ M4U5"251%33$Z(" @('AX>'@-"B @("!.145$141354))5$5-.B @("!X>'AX M#0H-"DE414U465!%0CH-"B @("!354))5$5-,3H@>'AX#0H-"B @("!.145$ M141354))5$5-,3H@(" @>'AX> T*(" @($Y%141%1%-50DE414TR.B @("!X '>'AX#0H-"@`` ` end

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Building boost::fs to a dll
by boost＠dalvander.com 26 Jul '04

26 Jul '04

Is it possible to build boost::filesystem to a dll instead of creating a static linked library? // Anders Dalvander

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C++ Template Metaprogramming
by David Abrahams 25 Jul '04

25 Jul '04

For the past year Aleksey Gurtovoy and I have been working on a new book, titled _C++ Template Metaprogramming: Concepts, Tools and Techniques from Boost and Beyond_. The book has recently entered copyediting. If you're interested you can peruse some sample chapters at http://boost-consulting.com/mplbook. Regards, Dave -- Dave Abrahams Boost Consulting http://www.boost-consulting.com

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Building boost into a single dll
by boost＠dalvander.com 24 Jul '04

24 Jul '04

Is it possible to build all (or some specified) boost libraries into one single dll? // Anders Dalvander

1 0

Newbie -- Regex, Unicode, XCode and MacOSX
by Steve Moore 23 Jul '04

23 Jul '04

Hello. I'm trying to incorporate Unicode regex searching in a little app I'm doing. I'm building using XCode 1.2 on MacOSX 10.3.4. The problem I'm having is that I can't seem to get boost's regex to incorporate unicode or wide-character support. In <boost/config/platform/macos.hpp> there is the line #define BOOST_NO_CWCHAR which seems to disable allowance for unicode by causing boost::wregex and boost::wcmatch symbols to not be typedef-ed. A test app. shows that these symbols are defined when I build using Codewarrior. So I'm wondering how to get unicode support for regex using XCode (gcc) on a MacOSX machine. Any suggestions? Thanks 10^6, STeve Moore.

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