June 2007 - Boost-users - lists.preview.boost.org

Re: [Boost-users] [mpl]pop_front function on integral sequence
by Ovanes Markarian 19 Jun '07

19 Jun '07

[...] > Thanks, iterator_range works fine. What's not very nice to me is the T typename is lost for empty >sequence and after using a metafunction, so vector_c is not really usable for metaprograming, its >just a macro to easier define a vector. Well... Type never gets lost in C++ ;) What about: typedef mpl::vector_c<float, 2.0,2.1,2.2> my_vector; BOOST_MPL_ASSERT(( is_same< mpl::front<my_vector>::type::value_type, float > )); vector_c initializes a vector with integral_c derived type (like mpl::int_ or mpl::bool_) and value specified, so in this example we have most probably an mpl::vector of integral_c<float, 2.0>,..., integral_c<float, 2.2>. Anyway applying a front metafunction to any element of vector will return some integral_c<float, X> specification. Since you are interested in type contained in integral_c you can access it via integral_c<float, X>::value_type. Therefore: mpl::front<my_vector>::type::value_type ^^^^ ^^^^^ + => integral_c<float, X>::value_type + => integral_c<float, X> result in correct type resolution stored in mpl::vector. Hope that helps. With Kind Regards, Ovanes Markarian

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Configuration errors using Boost.Tr1
by Chris Fairles 19 Jun '07

19 Jun '07

RHEL5, Boost 1.34.0, GCC 4.1.1 Boost headers are installed under /usr/include echo "#include <boost/tr1/type_traits.hpp>" > test.cpp g++ -c test.cpp In file included from /usr/include/boost/tr1/type_traits.hpp:8, from test.cpp:1: /usr/include/boost/tr1/detail/config.hpp:58:26: error: no include path in which to search for utility from /usr/include/boost/tr1/type_traits.hpp:8 6 #ifndef BOOST_TR1_TYPE_TRAITS_HPP_INCLUDED 7 # define BOOST_TR1_TYPE_TRAITS_HPP_INCLUDED 8 # include <boost/tr1/detail/config.hpp> /usr/include/boost/tr1/detail/config.hpp:58:26 37 #if defined(__GNUC__) && !defined(BOOST_HAS_INCLUDE_NEXT) 38 # define BOOST_HAS_INCLUDE_NEXT 39 #endif ... 53 #ifdef BOOST_HAS_INCLUDE_NEXT 54 # ifndef BOOST_TR1_NO_RECURSION 55 # define BOOST_TR1_NO_RECURSION 56 # define BOOST_TR1_NO_CONFIG_RECURSION 57 # endif 58 # include_next <utility> Have I configured something wrong? Or am I not just not using the Boost tr1 headers correctly? Chris

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[preprocessor] Argument list conversion
by Server Levent Yilmaz 19 Jun '07

19 Jun '07

Hi, I have the following fun problem, seemingly simple, but couldn't find the trick. The objective is to convert a given argument list to some other one or more useful argument list. Each of the arguments are copied verbatim into the other list unless it is specified to be a SPECIAL_TYPE. For example the following two-argument macro function call: FUNKY_MACRO( 5, ( double*, SPECIAL_TYPE, const char[], SPECIAL_TYPE, int) ) would spit out: (double*, const char[], int, special1, special1); (double*, special1, const char[], special1, int, special2, special2); note that, in the first generated tuple SPECIAL_TYPE is replaced by some other text, and moved to the end of the tuple. In the second one, same replacement occurs and some yet other text is appended repeatedly at the end, same number of times as SPECIAL_TYPE appears in the original list. Any ideas how to do this (or part of it) with the incredibly amazing Preprocessor library? thanks -- Server Levent Yilmaz Mechanical Engineering University of Pittsburgh

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[mpl]pop_front function on integral sequence
by Vít Kasal 19 Jun '07

19 Jun '07

Hi, I have a problem with using pop_front on an integral sequence. pop_front< vector_c<T, c1, c2, ... cn> >::type results in vector<c2, ... cn> Is it intended behavior? Is there some way to get vector_c<T, c2, ... cn> > Thanks Vit

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MSVC-7.1 does not compile all the project code
by king.coffee＠att.net 19 Jun '07

19 Jun '07

Hi, I downloaded and ran bjam from the BOOST home directory. Most of the projects compiled OK. But projects using read_graphviz_spirit.cpp cause "cl.exe" to terminate. cl.exe resulted in an buffer overrun error. The cl compiler I'm using is MSVC++ 7.1 standard edition (no optimization). The OS is Windows XP Pro Thanks, King --------------------------------------------------------------- P.S: The following results from rerunning the bjam utility: WARNING: No python installation configured and autoconfiguration failed. See http://www.boost.org/libs/python/doc/building.html for configuration instructions or pass --without-python to suppress this message and silently skip all Boost.Python targets warning: Python location is not configured warning: the Boost.Python library won't be built Building Boost.Regex with the optional Unicode/ICU support disabled. Please refer to the Boost.Regex documentation for more information (don't panic: this is a strictly optional feature). warning: No toolsets are configured. warning: Configuring default toolset "msvc". warning: If the default is wrong, you may not be able to build C++ programs. warning: Use the "--toolset=xxxxx" optio n to o verride our guess. warning: For more configuration options, please consult warning: http://boost.org/boost-build2/doc/html/bbv2/advanced/configuration.html ...patience... ...patience... ...found 4024 targets... ...updating 28 targets... compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\release\threading-multi\read_graphviz_spirit.obj read_graphviz_spirit.cpp call "C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\vcvars32.bat" >nul cl /Zm800 -nologo @"bin.v2\libs\graph\build\msvc-7.1\release\threading-multi\read_graphviz_spirit.obj.rsp" ...failed compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\release\threading-multi\read_graphviz_spirit.obj... ...skipped <pbin.v2\libs\graph\build\msvc-7.1\release\threading-multi>boost_graph-vc71-mt-1_34.dll for lack of <pbin.v2\libs\graph\build\msvc-7.1\release\threading-multi>read_graphviz_spirit.obj... ...skipped <pbin.v2\libs\graph\build\msvc-7.1\release\threading-multi>boost_graph-vc71-mt-1_34.lib for lack of <pbin.v2\libs\graph\build\msvc-7.1\release\threading-multi>read_graphviz_spirit.obj... compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\debug\read_graphviz_spirit.obj read_graphviz_spirit.cpp call "C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\vcvars32.bat" >nul cl /Zm800 -nologo @"bin.v2\libs\graph\build\msvc-7.1\debug\read_graphviz_spirit.obj.rsp" ...failed compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\debug\read_graphviz_spirit.obj... ...skipped <pbin.v2\libs\graph\build\msvc-7.1\debug>boost_graph-vc71-gd-1_34.dll for lack of <pbin.v2\libs\graph\build\msvc-7.1\debug>read_graphviz_spirit.obj... ...skipped <pbin.v2\libs\graph\build\msvc-7.1\debug>boost_graph-vc71-gd-1_34.lib for lack of <pbin.v2\libs\graph\build\msvc-7.1\debug>read_graphviz_spirit.obj... compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\release\read_graphviz_spirit.obj read_graphviz_spirit.cpp call "C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\vcvars32.bat" >nul cl /Zm800 -nologo @"bin.v2\libs\graph\build\msvc-7.1\release\read_graphviz_spirit.obj.rsp" ...failed compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\release\read_graphviz_spirit.obj... ...skipped <pbin.v2\libs\graph\build\msvc-7.1\release>boost_graph-vc71-1_34.dll for lack of <pbin.v2\libs\graph\build\msvc-7.1\release>read_graphviz_spirit.obj... ...skipped <pbin.v2\libs\graph\build\msvc-7.1\release>boost_graph-vc71-1_34.lib for lack of <pbin.v2\libs\graph\build\msvc-7.1\release>read_graphviz_spirit.obj... compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\debug\link-static\threading-multi\read_graphviz_spirit.obj read_graphviz_spirit.cpp call "C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\vcvars32.bat" >nul cl /Zm800 -nologo @"bin.v2\libs\graph\build\msvc-7.1\debug\link-static\threading-multi\read_graphviz_spirit.obj.rsp" ...failed compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\debug\link-static\threading-multi\read_graphviz_spirit.obj... ...skipped <pbin.v2\libs\graph\build\msvc-7.1\debug\link-static\threading-multi>libboost_graph-vc71-mt-gd-1_34.lib for lack of <pbin.v2\libs\graph\build\msvc-7.1\debug\link-static\threading-multi>read_graphviz_spirit.obj... compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\release\link-static\threading-multi\read_graphviz_spirit.obj read_graphviz_spirit.cpp call "C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\vcvars32.bat" >nul cl /Zm800 -nologo @"bin.v2\libs\graph\build\msvc-7.1\release\link-static\threading-multi\read_graphviz_spirit.obj.rsp" ...failed compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\release\link-static\threading-multi\read_graphviz_spirit.obj... ...skipped <pbin.v2\libs\graph\build\msvc-7.1\release\link-static\threading-multi>libboost_graph-vc71-mt-1_34.lib for lack of <pbin.v2\libs\graph\build\msvc-7.1\release\link-static\threading-multi>read_graphviz_spirit.obj... compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\debug\link-static\read_graphviz_spirit.obj read_graphviz_spirit.cpp call "C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\vcvars32.bat" >nul cl /Zm800 -nologo @"bin.v2\libs\graph\build\msvc-7.1\debug\link-static\read_graphviz_spirit.obj.rsp" ...failed compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\debug\link-static\read_graphviz_spirit.obj... ...skipped <pbin.v2\libs\graph\build\msvc-7.1\debug\link-static>libboost_graph-vc71-gd-1_34.lib for lack of <pbin.v2\libs\graph\build\msvc-7.1\debug\link-static>read_graphviz_spirit.obj... compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\debug\threading-multi\read_graphviz_spirit.obj read_graphviz_spirit.cpp call "C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\vcvars32.bat" >nul cl /Zm800 -nologo @"bin.v2\libs\graph\build\msvc-7.1\debug\threading-multi\read_graphviz_spirit.obj.rsp" ...failed compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\debug\threading-multi\read_graphviz_spirit.obj... ...skipped <pbin.v2\libs\graph\build\msvc-7.1\debug\threading-multi>boost_graph-vc71-mt-gd-1_34.dll for lack of <pbin.v2\libs\graph\build\msvc-7.1\debug\threading-multi>read_graphviz_spirit.obj... ...skipped <pbin.v2\libs\graph\build\msvc-7.1\debug\threading-multi>boost_graph-vc71-mt-gd-1_34.lib for lack of <pbin.v2\libs\graph\build\msvc-7.1\debug\threading-multi>read_graphviz_spirit.obj... compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\release\link-static\read_graphviz_spirit.obj read_graphviz_spirit.cpp call "C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\vcvars32.bat" >nul cl /Zm800 -nologo @"bin.v2\libs\graph\build\msvc-7.1\release\link-static\read_graphviz_spirit.obj.rsp" ...failed compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\release\link-static\read_graphviz_spirit.obj... ...skipped <pbin.v2\libs\graph\build\msvc-7.1\release\link-static>libboost_graph-vc71-1_34.lib for lack of <pbin.v2\libs\graph\build\msvc-7.1\release\link-static>read_graphviz_spirit.obj... compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\debug\link-static\runtime-link-static\threading-multi\read_graphviz_spirit.obj read_graphviz_spirit.cpp call "C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\vcvars32.bat" >nul cl /Zm800 -nologo @"bin.v2\libs\graph\build\msvc-7.1\debug\link-static\runtime-link-static\threading-multi\read_graphviz_spirit.obj.rsp" ...failed compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\debug\link-static\runtime-link-static\threading-multi\read_graphviz_spirit.obj... ...skipped <pbin.v2\libs\graph\build\msvc-7.1\debug\link-static\runtime-link-static\threading-multi>libboost_graph-vc71-mt-sgd-1_34.lib for lack of <pbin.v2\libs\graph\build\msvc-7.1\debug\link-static\runtime-link-static\threading-multi>read_graphviz_spirit.obj... compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\release\link-static\runtime-link-static\threading-multi\read_graphviz_spirit.obj read_graphviz_spirit.cpp call "C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\vcvars32.bat" >nul cl /Zm800 -nologo @"bin.v2\libs\graph\build\msvc-7.1\release\link-static\runtime-link-static\threading-multi\read_graphviz_spirit.obj.rsp" ...failed compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\release\link-static\runtime-link-static\threading-multi\read_graphviz_spirit.obj... ...skipped <pbin.v2\libs\graph\build\msvc-7.1\release\link-static\runtime-link-static\threading-multi>libboost_graph-vc71-mt-s-1_34.lib for lack of <pbin.v2\libs\graph\build\msvc-7.1\release\link-static\runtime-link-static\threading-multi>read_graphviz_spirit.obj... compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\debug\link-static\runtime-link-static\read_graphviz_spirit.obj read_graphviz_spirit.cpp call "C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\vcvars32.bat" >nul cl /Zm800 -nologo @"bin.v2\libs\graph\build\msvc-7.1\debug\link-static\runtime-link-static\read_graphviz_spirit.obj.rsp" ...failed compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\debug\link-static\runtime-link-static\read_graphviz_spirit.obj... ...skipped <pbin.v2\libs\graph\build\msvc-7.1\debug\link-static\runtime-link-static>libboost_graph-vc71-sgd-1_34.lib for lack of <pbin.v2\libs\graph\build\msvc-7.1\debug\link-static\runtime-link-static>read_graphviz_spirit.obj... compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\release\link-static\runtime-link-static\read_graphviz_spirit.obj read_graphviz_spirit.cpp call "C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\vcvars32.bat" >nul cl /Zm800 -nologo @"bin.v2\libs\graph\build\msvc-7.1\release\link-static\runtime-link-static\read_graphviz_spirit.obj.rsp" ...failed compile-c-c++ bin.v2\libs\graph\build\msvc-7.1\release\link-static\runtime-link-static\read_graphviz_spirit.obj... ...skipped <pbin.v2\libs\graph\build\msvc-7.1\release\link-static\runtime-link-static>libboost_graph-vc71-s-1_34.lib for lack of <pbin.v2\libs\graph\build\msvc-7.1\release\link-static\runtime-link-static>read_graphviz_spirit.obj... ...failed updating 12 targets... ...skipped 16 targets...

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ASIO: When part of official Boost release?
by Andrej van der Zee 19 Jun '07

19 Jun '07

Hi, My apologies if this already has been asked, but I was wondering why the ASIO network library is not part of the standard distribution of Boost and doesn't appear on the Boost website. Will it ever be? And if so, from which Boost release is this targeted? My best regards, Andrej ___________________________________________________________ Yahoo! Answers - Got a question? Someone out there knows the answer. Try it now. http://uk.answers.yahoo.com/

2 3

Preprocessor thingy
by Johan 't Hart 18 Jun '07

18 Jun '07

Hi, I don't know if boost has a solution for my problem, or there is just something simple I miss... I've been struggling with some preprocessor things. I'm trying to use it for versioning. Here is the problem: I've got these defines: #define VERSION_MAJOR 5 #define VERSION_MINOR 4 #define VERSION_BUILD 3 #define VERSION_SUBBUILD 2 Sometimes I just need a string like: "5.4.3.2". I do it like this: #define STRINGER_(s) #s #define STRINGER(s) STRINGER_(s) #define VERSION_STRING_1 \ STRINGER(VERSION_MAJOR) "." \ STRINGER(VERSION_MINOR) "." \ STRINGER(VERSION_BUILD) "." \ STRINGER(VERSION_SUBBUILD) So VERSION_STRING_1 is "5.4.3.2" Now I need a string like: "5.4.3b". (Note the 'b'. When VERSION_SUBBUILD == 3, I want it to be a 'c' etc) How do I do this in a preprocessor command???? The char is simple, its (VERSION_SUBBUILD+'a'-1). How do I add that to a string?? It just looks so simple, I can't stand I'm not finding a solution! I'm hoping someone could help me! Regards Johan

2 2

[spirit] MS compiler ICE when using push_back_a
by Christian Henning 18 Jun '07

18 Jun '07

Hi there, I'm using boost 1.34 and MS VC7.1 . The following code lets my compiler ICE. #include <vector> #include <boost/spirit/core.hpp> #include <boost/spirit/actor/push_back_actor.hpp> using namespace std; namespace sp = boost::spirit; int main(int argc, char* argv[]) { vector<int> n; bool ret = parse( "12", sp::int_p[push_back_a( n )] ).full; return 0; } The reason is the push_back_a actor. Is that a known issue or am I doing something wrong? Regards, Christian

2 2

Re: [Boost-users] [serialization]
by Johan Franzén 18 Jun '07

18 Jun '07

> I still got some starting problems with the boost::serialization library. > I want to serialize a shared_ptr to my own polymorphic class. > I'm building my own networkprotocol and the basic idea is a kind > of "header"-class which with a shared_ptr<data_base> which can point to a > lot of different data structs, which are polymorphic children of data_base. > > This "header"-class is then serialized and send to another peer. But how > should this peer get the real type from the shared_ptr<data_base>? Which > child is it pointing to? I can get the name with "typeid()", but i cannot > get the type through that way. I would like to get the type from it > automaticly without using some case-conditions, so i only have to add a new > child of data_base and can use it, without changing any networkprotocol > related code. > > Kind Regards > Manuel Jung This isn't really related to Boost.Serialization, but I think You might get what You want using the visitor pattern. That's how I manage the different message bodies in my latest project at work. (See http://en.wikipedia.org/wiki/Visitor_pattern) HTH, Johan Franzén

1 0

Error using boost::thread for the first time.
by Simon Pickles 18 Jun '07

18 Jun '07

Hi there, I am using boost::thread for the first time as part of boost::asio. I am trying to compile the chat_client.cpp example. When I uncomment the threading line, it won't link. Here's the line in question: boost::thread t(boost::bind(&boost::asio::io_service::run, &io_service)); and heres the error: chat_client.obj : error LNK2019: unresolved external symbol "public: __thiscall boost::thread::~thread(void)" (??1thread@boost@@QAE@XZ) referenced in function _main chat_client.obj : error LNK2019: unresolved external symbol "public: void __thiscall boost::thread::join(void)" (?join@thread@boost@@QAEXXZ) referenced in function _main chat_client.obj : error LNK2019: unresolved external symbol "public: __thiscall boost::thread::thread(class boost::function0<void,class std::allocator<class boost::function_base> > const &)" (??0thread@boost@@QAE@ABV?$function0@XV?$allocator@Vfunction_base@boost@@@std@@@1@@Z) referenced in function _main I think I've done everything required. I've installed all the boost libraries with the Boost Consulting installer. I've added a few defines too: #define BOOST_ALL_NO_LIB // For linking with boost.thread not supported by BOOST_ALL_DYN_LINK #define BOOST_THREAD_USE_DLL // Verbose #define BOOST_LIB_DIAGNOSTIC All to no avail. I'm not getting the 'boost-*.lib not found' message..... Just missing functions! Anyone any advice? Thanks Simon _________________________________________________________________ Play your part in making history - Email Britain! http://www.emailbritain.co.uk/

2 1

[serialization]
by Manuel Jung 18 Jun '07

18 Jun '07

Hi, I still got some starting problems with the boost::serialization library. I want to serialize a shared_ptr to my own polymorphic class. I'm building my own networkprotocol and the basic idea is a kind of "header"-class which with a shared_ptr<data_base> which can point to a lot of different data structs, which are polymorphic children of data_base. This "header"-class is then serialized and send to another peer. But how should this peer get the real type from the shared_ptr<data_base>? Which child is it pointing to? I can get the name with "typeid()", but i cannot get the type through that way. I would like to get the type from it automaticly without using some case-conditions, so i only have to add a new child of data_base and can use it, without changing any networkprotocol related code. Kind Regards Manuel Jung

2 2

How to create a timer in boost::thread
by Meryl Silverburgh 18 Jun '07

18 Jun '07

Hi, Can you please tell me if i can do this with boost::thread library? 1. create a timer (say 5 seconds) which execute a function in a different thread when it expires. 2. the creator can cancel the timer before it expires. Thank you.

6 9

BGL python bindings: copy.copy(g) adds spurious properties
by John Reid 18 Jun '07

18 Jun '07

Hi, When a graph is copied via copy.copy(g), extra vertex and edge property maps are added. import boost.graph as bgl g = bgl.Graph() prop = g.add_vertex_property('prop') from copy import copy g_copy = copy(g) print g.vertex_properties.keys() print g_copy.vertex_properties.keys() Output: g's vertex properties: ['prop'] g_copy's vertex properties: ['object', 'prop'] This property named 'object' contains the same values as the 'prop' property. Is this a bug in the pickling support? I have the latest version from SVN. Thanks, John.

3 7

Can i compile Regex with _UNICODE/UNICODE instead of _MBCS under VC++6 ?
by alovespring＠gmail.com 18 Jun '07

18 Jun '07

thx!

2 1

[boost] build of boost 1.34.0 with STLport
by LoadCom 18 Jun '07

18 Jun '07

hello, I downloaded the new boost 1.34 and try to build it. I found the doc of the new release have been improved a lot. But still with one thing I'm confused - with version 1.33.1, I can build the libs using VC6, VC7.1 or VC8.0 with different toolset files, and I also can use seperate toolset files if I want to build with STLport. In 1.34, I found only a msvc.jam and there's no STLport counterpart. Can anybody give me an explanation on this and tell me how to make a STLport build? I'm using MSVC7.1 on Windows XP. Thanks in advance. -------------- LoadCom 2007-06-16

2 1

how to get local ip address using boost::asio
by Sergey Nikulov 18 Jun '07

18 Jun '07

Hi All, I'm looking for possibility to get my local ip address (not loopback) using boost::asio. Is it possible? I'm trying to use local_address_ = socket_.local_endpoint().address(); right after I connect to remote server, but it always return "127.0.0.1" as result. Could you please point me to information how to get address of my network card? Thank you.

1 0

hidden directories
by Jacky J 17 Jun '07

17 Jun '07

How do i create hidden directories with the boost filesystem in linux? if i call create_directory(".test"), it gives me an error Thanks

2 2

[pointer container] How to avoid double allocation?
by Seweryn Habdank-Wojewódzki 17 Jun '07

17 Jun '07

HI! Is there any opportunity, to avoid double allocation of memory using pointer containers? I have simple code (below) and I want allocate memory for objects, construct them, and _move_ (transfer) pointer to the container. Valgrind shows me that there are made 2 alocations even if I am creating only 1 object. ==20121== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 7 from 1) ==20121== malloc/free: in use at exit: 0 bytes in 0 blocks. ==20121== malloc/free: 2 allocs, 2 frees, 8 bytes allocated. What is happening If the object is huge? Is there any way to transfer the pointer? Regards. #include <boost/ptr_container/ptr_vector.hpp> class Foo { public: Foo (int const i) : i_ (i) {} private: int i_; }; Foo * ret_ptr(int const i) { return new Foo(i); } int main() { boost::ptr_vector<Foo> vfoo; for (int i = 0; i < 1; ++i) vfoo.push_back (ret_ptr(i)); } -- |\/\/| Seweryn Habdank-Wojewódzki \/\/

2 2

[boost] building CVS HEAD on msvc 8.0
by Andy Stevenson 16 Jun '07

16 Jun '07

Hi, Moved from cygwin onto native msvc. Trying to build libraries from the HEAD sources on msvc and it can't find wtypes.h... windows.h etc I tried pointing at the mingw headers but that was a complete waste of time.... What am i doing wrong? Andy

2 1

[asio] some design questions
by Yuval Ronen 16 Jun '07

16 Jun '07

Hi. I'm looking at the Design page of the asio docs (http://tinyurl.com/2b5afn) and several questions come to mind: 1. The "Proactor" page has Advantages/Disadvantages section, but it doesn't specify in comparison to what (advantages and disadvantages are always compared to something). I'm getting the impression that it's compared to the Reactor approach. Is this correct? 2. The "Platform-Specific Implementation" page notes that when using select/epoll/kqueue, demultiplexing is performed in one of the threads that calls boost::asio::io_service::run(). I assume that when this thread is awaken to perform some task, one of the other threads that called run() on the same boost::asio::io_service takes it position as waiting on select/epoll/kqueue. Is this correct? 3. The "Platform-Specific Implementation" page also notes that "An additional thread per io_service is used to emulate asynchronous host resolution. This thread is created on the first call to either boost::asio::ip::tcp::resolver::async_resolve() or boost::asio::ip::udp::resolver::async_resolve()." So I guess that if I resolve() rather than async_resolve(), then no thread is created, and the actual resolving is done in the thread that called resolve()? I think all these notes would be a good addition to the docs. Thanks.

2 2

Boost 1.34 and Visual C++ "Orcas"
by Josue Gomes 16 Jun '07

16 Jun '07

Hi, I've successfully built Boost 1.34 with MS Visual C++ "Orcas" Express Edition. To do so I've modified msvc.jam and visualc.hpp. Here the patch files for all of you interested. --- msvc.jam 2007-05-13 07:37:48.562500000 -0300 +++ msvc.jam 2007-05-12 13:10:57.734375000 -0300 @@ -231,6 +231,10 @@ local rule configure-really ( { # Even if version is not explicitly specified, try to detect the version # from the path. + if [ MATCH "(Microsoft Visual Studio 9.0)" : $(command) ] + { + version = 9.0 ; + } if [ MATCH "(Microsoft Visual Studio 8)" : $(command) ] { version = 8.0 ; --- visualc.hpp 2006-01-13 04:48:08.000000000 -0200 +++ visualc.hpp 2007-05-12 13:07:19.500000000 -0300 @@ -168,8 +168,8 @@ #error "Compiler not supported or configured - please reconfigure" #endif // -// last known and checked version is 1400 (VC8): -#if (_MSC_VER > 1400) +// last known and checked version is 1500 (VC9): +#if (_MSC_VER > 1500) # if defined(BOOST_ASSERT_CONFIG) # error "Unknown compiler version - please run the configure tests and report the results" # else Regards, josuegomes at gmail dot com

4 5

[Serialization] BOOST_CLASS_EXPORT_GUID() destroying namespace
by Manuel Jung 16 Jun '07

16 Jun '07

Hi, When i put the script BOOST_CLASS_EXPORT_GUID() into my code directly after the definition of my base class and derived classes, my namespace seems to be broken. The classes are defined in my namespace "water". When i put the script into the code, it fails to find boost::bind in the source file! THe compiler searches for bind in the namespace "water::boost". But without the script it compiles fine! Someone got a clue whats wrong? Kind Regards Manuel Jung

2 2

How to Compile boost on AIX using xlC
by dx 16 Jun '07

16 Jun '07

Hello, I'm having a hard time compiling boost on AIX using xlC. 1) My general question, is what steps have people taken to compile boost on AIX using xlC? - did you modify makefiles, and use gmake ? - did you use bjam instead ? - what changes are needed to various makefiles, etc., to compile on AIX with xlC ? - did you use gnu compatible xlc ? 2) Currently I'm attempting to build regex right now on AIX with xlC I could compile it easily using gcc: gmake -fgcc.mak But I can't using xlC. I've modified generic.mak, to use xlC as the compiler, and it doesn't get that far. I'm using this within the */regex/build directory. Warning messages that I've encountered so far include the following: (these are just snippets) The incomplete class "gcc_3_2_wknd" must not be used as a qualifier. A non-type template parameter cannot have type "const bool" After the warning messages are printed out, gmake returns Error 1: gmake: *** [xlC/boost_regex-xlC-1_33_1/cregex.o] Error 1 Thanks for any help. Don

4 11

Bug in Graph Library Docs?
by David A. Greene 16 Jun '07

16 Jun '07

At http://www.boost.org/libs/graph/doc/adjacency_list.html, there's a table of how graph operations affect iterators and descriptors. That table states that add_vertex will not invalidate vertex descriptors when the vertex list is a vecS. I recently discovered that this is wrong for Boost 1.33.1. That makes sense because adding an edge could cause the vector to be reallocated and therefore all vertex descriptors to become invalid. I would assume this holds for edge descriptors and iterators as well. Is the documentation wrong or has this changed in 1.34? -Dave

1 0

Boost Asio Error
by Simon Pickles 15 Jun '07

15 Jun '07

Hello, I've just discovered boots::asio. Looks good but got a small problem. I'm basing my client on the chat_client example, but having a problem. In the example, command line arguments are passed to the chat_client specifying server details. My question is, what is the format of the argv in the example? I have modified things a little to fit into my system, but am not sure what to pass the chat_client class. I have tried passing "localhost", but am still getting an error here: boost::asio::io_service io_service; tcp::resolver resolver(io_service); tcp::resolver::query query(DEFAULT_SERVERNAME); // DEFAULT_SERVERNAME = '127.0.0.1' tcp::resolver::iterator iterator = resolver.resolve(query); // <<< error here, in 'implementation' - not defined! m_connector = boost::shared_ptr<CConnector>( new CConnector( io_service, iterator ) ); // <<< this is just a version of chat_client.hpp Sure I am missing something simple.... thanks for any advice Simon -- http://www.simonpickles.com --- http://www.squirtualreality.com

1 0

Re : Problem with boost serialization: shared_ptr
by Michel Pineau 15 Jun '07

15 Jun '07

Hello, I'm compiling and running the test program on LINUX, not on windows. If you look at the shared_ptr members, they are not properly set after loading. The test program doesn't crash but our application do crash when going through the shared_ptr. Michel :) ----- Message initial ---- De : Robert Ramey <ramey(a)rrsd.com> À : boost-users(a)lists.boost.org Envoyé le : jeudi 14 juin 2007, 18 h 43 min 51 s Objet : Re: [Boost-users] Problem with boost serialization: shared_ptr I looked over your code at it looks like it shoud be OK to me. I Tried to compile it with my VC 71 system using boost 1.3 (cvs HEAD) and I got an error at the following line: class ABC : public IA, public IB, public IC \BoostHead\libs\serialization\test\test_zmisc.cpp(85) : fatal error C1001: INTERNAL COMPILER ERROR (compiler file 'msc1.cpp', line 2701) Please choose the Technical Support command on the Visual C++ Help menu, or open the Technical Support help file for more information which looks to me to be an artifact of the test system. I'll look some more if I can get the chance. Robert Ramey "Michel Pineau" <mpineau1963(a)yahoo.com> wrote in message news:478215.90532.qm@web53310.mail.re2.yahoo.com... Hello, I'm trying to serialize many boost::shared_ptr to the same object but through different base classes. When I look at the boost::shared_ptr for the base classes they are not properly set. I created a simple example that show my problem. The test program output is: _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users Changez de tête et de tenue tous les jours si vous le voulez ! Volez la vedette sur Yahoo! Québec Avatars http://cf.avatars.yahoo.com/

2 1

Unable to build Boost.Serialization library from boost 1.34 with vacpp.
by Joe Davidson 15 Jun '07

15 Jun '07

We are using IBM's XLC compiler (version 8.0) on a LInux/PPC system. I have been able to compile boost 1.33.1 with XLC without any showstopping problems. (The Boost.Wave library has some minor issues I think) Attempting to build boost 1.34.0 with the same version of xlc results in multiple compilation failures. I'm providing one of the build errors in hopes that I can start getting some pointers as to where to look. I can dig up more compilation errors if needed. I did have to patch the vacpp.jam file to override the default location of the xlc compiler. There should be a better way to set the compiler location right? Suggestions? Thanks, -- Joe $ cd $HOME/boost_1_34_0 $ /configure --with-libraries=serialization --with-toolset=vacpp $ make ./tools/jam/src/bin.unknownppc/bjam --user-config=user-config.jam--with-serialization ...patience... ...found 1178 targets... ...updating 48 targets... vacpp.compile.c++ bin.v2 /libs/serialization/build/vacpp/release/link-static/threading-multi/binary_wiarchive.o "./boost/archive/impl/basic_binary_iprimitive.ipp", line 180.9: 1540-0216 (S) An expression of type "std::basic_streambuf<wchar_t,std::char_traits<wchar_t> >" cannot be converted to type "boost::archive::detail::input_streambuf_access<wchar_t,std::char_traits<wchar_t> > &". "./boost/archive/impl/basic_binary_iprimitive.ipp", line 177.1: 1540-0700 (I) The previous message was produced while processing "boost::archive::basic_binary_iprimitive<boost::archive::binary_wiarchive,wchar_t,std::char_traits<wchar_t> >::~basic_binary_iprimitive()". "./boost/archive/binary_iarchive_impl.hpp", line 70.5: 1540-0700 (I) The previous message was produced while processing "boost::archive::binary_iarchive_impl<boost::archive::binary_wiarchive,wchar_t,std::char_traits<wchar_t> >::binary_iarchive_impl(std::basic_istream<wchar_t,std::char_traits<wchar_t> > &, unsigned int)". "./boost/archive/binary_iarchive_impl.hpp", line 28.7: 1540-0700 (I) The previous message was produced while processing "class boost::archive::binary_iarchive_impl<boost::archive::binary_wiarchive,wchar_t,std::char_traits<wchar_t> >". "./boost/archive/binary_wiarchive.hpp", line 33.7: 1540-0700 (I) The previous message was produced while processing "class boost::archive::binary_wiarchive". /usr/bin/xlC_r -c -DBOOST_ALL_NO_LIB=1 -DNDEBUG -O3 -qstrict -qinline -qeh -qrtti -I"." -o "bin.v2/libs/serialization/build/vacpp/release/link-static/threading-multi/binary_wiarchive.o" "libs/serialization/src/binary_wiarchive.cpp" ...failed vacpp.compile.c++ bin.v2 /libs/serialization/build/vacpp/release/link-static/threading-multi/binary_wiarchive.o...

1 0

Re : Problem with boost serialization: shared_ptr
by Michel Pineau 15 Jun '07

15 Jun '07

Hello, I think I have found something, but I would like you to confirm, in the get_helper (boost/serialization/shared_ptr.hpp), if the variable sph (See code: shared_ptr<void> sph;) represent the most derived class, and if we have mulitple inheritance, then we cannot cast (See code: return * static_cast<H *>(sph.get());) a void * to a base class. It has to be cast to the derived class first and then to the base class. What do you think? template<class Archive, class H> H & get_helper(Archive & ar){ extended_type_info * eti = type_info_implementation<H>::type::get_instance(); shared_ptr<void> sph; ar.lookup_helper(eti, sph); if(NULL == sph.get()){ sph = shared_ptr<H>(new H); ar.insert_helper(eti, sph); } return * static_cast<H *>(sph.get()); } Thanks again, Michel :) ----- Message initial ---- De : Robert Ramey <ramey(a)rrsd.com> À : boost-users(a)lists.boost.org Envoyé le : jeudi 14 juin 2007, 18 h 43 min 51 s Objet : Re: [Boost-users] Problem with boost serialization: shared_ptr I looked over your code at it looks like it shoud be OK to me. I Tried to compile it with my VC 71 system using boost 1.3 (cvs HEAD) and I got an error at the following line: class ABC : public IA, public IB, public IC \BoostHead\libs\serialization\test\test_zmisc.cpp(85) : fatal error C1001: INTERNAL COMPILER ERROR (compiler file 'msc1.cpp', line 2701) Please choose the Technical Support command on the Visual C++ Help menu, or open the Technical Support help file for more information which looks to me to be an artifact of the test system. I'll look some more if I can get the chance. Robert Ramey "Michel Pineau" <mpineau1963(a)yahoo.com> wrote in message news:478215.90532.qm@web53310.mail.re2.yahoo.com... Hello, I'm trying to serialize many boost::shared_ptr to the same object but through different base classes. When I look at the boost::shared_ptr for the base classes they are not properly set. I created a simple example that show my problem. The test program output is: _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users Faites des appels de PC à PC dans le monde entier ! Essayez le nouveau Yahoo! Québec Messenger avec Voix. http://cf.messenger.yahoo.com/

1 0

[serialization] private default constructor
by Ruediger Berlich 15 Jun '07

15 Jun '07

Hi there, I have a few classes that only have private default constructors. As boost::serialization::access is declared as friend of these classes, this should not affect serialization, I believe. Is this correct ? Thanks and Best Regards, Ruediger Berlich

1 0

Re : Problem with boost serialization: shared_ptr
by Michel Pineau 15 Jun '07

15 Jun '07

Hello, In my example if you removed the boost::test_suite and replace it with a simple main function, it will compile with VC and you will be able to see the problem. Thank again, Michel :) ----- Message initial ---- De : Robert Ramey <ramey(a)rrsd.com> À : boost-users(a)lists.boost.org Envoyé le : jeudi 14 juin 2007, 18 h 43 min 51 s Objet : Re: [Boost-users] Problem with boost serialization: shared_ptr I looked over your code at it looks like it shoud be OK to me. I Tried to compile it with my VC 71 system using boost 1.3 (cvs HEAD) and I got an error at the following line: class ABC : public IA, public IB, public IC \BoostHead\libs\serialization\test\test_zmisc.cpp(85) : fatal error C1001: INTERNAL COMPILER ERROR (compiler file 'msc1.cpp', line 2701) Please choose the Technical Support command on the Visual C++ Help menu, or open the Technical Support help file for more information which looks to me to be an artifact of the test system. I'll look some more if I can get the chance. Robert Ramey "Michel Pineau" <mpineau1963(a)yahoo.com> wrote in message news:478215.90532.qm@web53310.mail.re2.yahoo.com... Hello, I'm trying to serialize many boost::shared_ptr to the same object but through different base classes. When I look at the boost::shared_ptr for the base classes they are not properly set. I created a simple example that show my problem. The test program output is: _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users Découvrez ce qui fait jaser les gens ! Visitez les groupes de l'heure sur Yahoo! Québec Groupes. http://cf.groups.yahoo.com/

1 0

Re: [Boost-users] [Serialization] BOOST_CLASS_EXPORT_GUID() destroyingnamespace
by Pfligersdorffer, Christian 15 Jun '07

15 Jun '07

boost-users-bounces(a)lists.boost.org wrote: > Hi, > > When i put the script BOOST_CLASS_EXPORT_GUID() into my code directly > after the definition of my base class and derived classes, my > namespace seems to be broken. The classes are defined in my namespace > "water". When i put the script into the code, it fails to find > boost::bind in the source file! THe compiler searches for bind in the > namespace "water::boost". But without the script it compiles fine! > Someone got a clue whats wrong? Kind Regards > Manuel Jung That's because you need to close any namespace before invoking the macro. Regards, -- DI Christian Pfligersdorffer Software Engineering EOS GmbH

1 0

[regex] undefined references to boost::reg_expression
by Ken Klose 15 Jun '07

15 Jun '07

I've been able to build this program without problem on one RHEL4 machine with boost 1.33.1. But on another machine it gives a ton of errors (see below). Any thoughts would be greatly appreciated. Thanks, Ken #include <iostream> #include <string> #include "boost/regex.hpp" using namespace boost; using namespace std; int main() { string _stream("1000_===_1181763561847_===_false"); boost::sregex_token_iterator _tokens, _end; _tokens = sregex_token_iterator(_stream.begin(), _stream.end(), regex("_===_", boost::regex::literal), -1); while(_tokens != _end) { cout << *_tokens++ << endl; } } make -f sample.mak all make[1]: Entering directory `/users/sd/jbfsa/bolanosr/dci_test/DciSample' g++ -Wall -g -D__OS_LINUX__ -pthread -I../DciApi/include -I../DciApi -I../boost_release/boost -c -o DciSample.o DciSample.cpp g++ DciSample.o -L../DciApi -lDciApi -L../boost_release/libs -lboost_date_time-gcc-mt -lboost_filesystem-gcc-mt -lboost_iostreams-gcc-mt -lboost_program_options-gcc-mt -lboost_regex-gcc-mt -lboost_serialization-gcc-mt -lboost_signals-gcc-mt -lboost_thread-gcc-mt -lboost_wave-gcc-mt -o DciSample g++ -Wall -g -D__OS_LINUX__ -pthread -I../DciApi/include -I../DciApi -I../boost_release/boost -c -o TestBoost.o TestBoost.cpp g++ TestBoost.o -L../DciApi -lDciApi -L../boost_release/libs -lboost_date_time-gcc-mt -lboost_filesystem-gcc-mt -lboost_iostreams-gcc-mt -lboost_program_options-gcc-mt -lboost_regex-gcc-mt -lboost_serialization-gcc-mt -lboost_signals-gcc-mt -lboost_thread-gcc-mt -lboost_wave-gcc-mt -o TestBoost TestBoost.o(.gnu.linkonce.t._ZN5boost11basic_regexIcNS_12regex_traitsIcEESaIcEEC1EPKcjRKS3_+0x13): In function `boost::basic_regex<char, boost::regex_traits<char>, std::allocator<char> >::basic_regex(char const*, unsigned int, std::allocator<char> const&)': /usr/include/boost/regex/v4/basic_regex.hpp:340: undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::reg_expression(char const*, unsigned int, std::allocator<char> const&)' TestBoost.o(.gnu.linkonce.t._ZN5boost11basic_regexIcNS_12regex_traitsIcEESaIcEED1Ev+0xd): In function `boost::basic_regex<char, boost::regex_traits<char>, std::allocator<char> >::~basic_regex()': /usr/include/boost/regex/v4/basic_regex.hpp:347: undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::~reg_expression()' TestBoost.o(.gnu.linkonce.t._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcSsEESaINS_9sub_matchIS6_EEENS_12regex_traitsIcEESaIcEEC1ES6_S6_RNS_13match_resultsIS6_S9_EERKNS_14reg_expressionIcSB_SC_EENS_15regex_constants12_match_flagsE+0x7e): In function `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char>, std::allocator<char> >::perl_matcher(__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, boost::match_results<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >&, boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&, boost::regex_constants::_match_flags)': /usr/include/boost/regex/v4/perl_matcher_common.hpp:42: undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::get_traits() const' TestBoost.o(.gnu.linkonce.t._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcSsEESaINS_9sub_matchIS6_EEENS_12regex_traitsIcEESaIcEEC1ES6_S6_RNS_13match_resultsIS6_S9_EERKNS_14reg_expressionIcSB_SC_EENS_15regex_constants12_match_flagsE+0xb7):/usr/include/boost/regex/v4/perl_matcher_common.hpp:45: undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::empty() const' TestBoost.o(.gnu.linkonce.t._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcSsEESaINS_9sub_matchIS6_EEENS_12regex_traitsIcEESaIcEE24estimate_max_state_countEPSt26random_access_iterator_tag+0x30): In function `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char>, std::allocator<char> >::estimate_max_state_count(std::random_access_iterator_tag*)': /usr/include/boost/regex/v4/perl_matcher_common.hpp:79: undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::size() const' TestBoost.o(.gnu.linkonce.t._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcSsEESaINS_9sub_matchIS6_EEENS_12regex_traitsIcEESaIcEE8find_impEv+0xc6): In function `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char>, std::allocator<char> >::find_imp()': /usr/include/boost/regex/v4/perl_matcher_common.hpp:201: undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::mark_count() const' TestBoost.o(.gnu.linkonce.t._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcSsEESaINS_9sub_matchIS6_EEENS_12regex_traitsIcEESaIcEE8find_impEv+0x206):/usr/include/boost/regex/v4/perl_matcher_common.hpp:219: undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::mark_count() const' TestBoost.o(.gnu.linkonce.t._ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcSsEESaINS_9sub_matchIS6_EEENS_12regex_traitsIcEESaIcEE8find_impEv+0x294):/usr/include/boost/regex/v4/perl_matcher_common.hpp:225: undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::mark_count() const' TestBoost.o(.gnu.linkonce.t._ZN5boost14c_regex_traitsIcE8is_classEcj+0x14): In function `boost::c_regex_traits<char>::is_class(char, unsigned int)': /usr/include/boost/regex/v4/regex_traits.hpp:219: undefined reference to `boost::re_detail::c_traits_base::class_map' TestBoost.o(.gnu.linkonce.t._ZN5boost14c_regex_traitsIcE9translateEcb+0x1f): In function `boost::c_regex_traits<char>::translate(char, bool)': /usr/include/boost/regex/v4/regex_traits.hpp:201: undefined reference to `boost::re_detail::c_traits_base::lower_case_map' TestBoost.o(.gnu.linkonce.t._ZN5boost9re_detail8access_tIcNS_12regex_traitsIcEESaIcEE5firstERKNS_14reg_expressionIcS3_S4_EE+0xd): In function `boost::re_detail::access_t<char, boost::regex_traits<char>, std::allocator<char> >::first(boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)': /usr/include/boost/regex/v4/perl_matcher.hpp:181: undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::first(boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)' TestBoost.o(.gnu.linkonce.t._ZN5boost9re_detail8access_tIcNS_12regex_traitsIcEESaIcEE12restart_typeERKNS_14reg_expressionIcS3_S4_EE+0xd): In function `boost::re_detail::access_t<char, boost::regex_traits<char>, std::allocator<char> >::restart_type(boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)': /usr/include/boost/regex/v4/perl_matcher.hpp:179: undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::restart_type(boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)' TestBoost.o(.gnu.linkonce.t._ZN5boost9re_detail8access_tIcNS_12regex_traitsIcEESaIcEE7get_mapERKNS_14reg_expressionIcS3_S4_EE+0xd): In function `boost::re_detail::access_t<char, boost::regex_traits<char>, std::allocator<char> >::get_map(boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)': /usr/include/boost/regex/v4/perl_matcher.hpp:183: undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::get_map(boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)' TestBoost.o(.gnu.linkonce.t._ZN5boost9re_detail8access_tIcNS_12regex_traitsIcEESaIcEE9can_startEcPKhh+0x24): In function `boost::re_detail::access_t<char, boost::regex_traits<char>, std::allocator<char> >::can_start(char, unsigned char const*, unsigned char)': /usr/include/boost/regex/v4/perl_matcher.hpp:190: undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::can_start(char, unsigned char const*, unsigned char, boost::re_detail::_narrow_type const&)' TestBoost.o(.gnu.linkonce.t._ZN5boost9re_detail8access_tIcNS_12regex_traitsIcEESaIcEE7get_kmpERKNS_14reg_expressionIcS3_S4_EE+0xd): In function `boost::re_detail::access_t<char, boost::regex_traits<char>, std::allocator<char> >::get_kmp(boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)': /usr/include/boost/regex/v4/perl_matcher.hpp:187: undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::get_kmp(boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)' TestBoost.o(.gnu.linkonce.t._ZN5boost9re_detail11raise_errorINS_12regex_traitsIcEEEEvRKT_j+0x15): In function `void boost::re_detail::raise_error<boost::regex_traits<char> >(boost::regex_traits<char> const&, unsigned int)': /usr/include/boost/regex/config.hpp:439: undefined reference to `boost::re_detail::c_traits_base::error_string(unsigned int)' TestBoost.o(.gnu.linkonce.t._ZN5boost9re_detail11raise_errorINS_12regex_traitsIcEEEEvRKT_j+0x21):/usr/include/boost/regex/config.hpp:439: undefined reference to `boost::re_detail::raise_regex_exception(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)' TestBoost.o(.gnu.linkonce.t._ZN5boost9re_detail16re_is_set_memberIN9__gnu_cxx17__normal_iteratorIPKcSsEEcNS_12regex_traitsIcEESaIcEEET_SA_SA_PKNS0_11re_set_longERKNS_14reg_expressionIT0_T1_T2_EE+0x61): In function `__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > boost::re_detail::re_is_set_member<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, char, boost::regex_traits<char>, std::allocator<char> >(__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, boost::re_detail::re_set_long const*, boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)': /usr/include/boost/regex/v4/perl_matcher.hpp:74: undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::get_traits() const' TestBoost.o(.gnu.linkonce.t._ZN5boost9re_detail16re_is_set_memberIN9__gnu_cxx17__normal_iteratorIPKcSsEEcNS_12regex_traitsIcEESaIcEEET_SA_SA_PKNS0_11re_set_longERKNS_14reg_expressionIT0_T1_T2_EE+0x2e8):/usr/include/boost/regex/v4/perl_matcher.hpp:126: undefined reference to `boost::c_regex_traits<char>::transform(std::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)' TestBoost.o(.gnu.linkonce.t._ZN5boost9re_detail16re_is_set_memberIN9__gnu_cxx17__normal_iteratorIPKcSsEEcNS_12regex_traitsIcEESaIcEEET_SA_SA_PKNS0_11re_set_longERKNS_14reg_expressionIT0_T1_T2_EE+0x3e0):/usr/include/boost/regex/v4/perl_matcher.hpp:151: undefined reference to `boost::c_regex_traits<char>::transform_primary(std::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)' collect2: ld returned 1 exit status make[1]: *** [TestBoost] Error 1

2 1

[Function][bind]Using function to store arbitrary class and arbitrary function
by Hughes, James 15 Jun '07

15 Jun '07

Hello all, I have a quick question that I hope some of the experts on Function and Bind can answer. I'll give a quick précis of what I would like to do. We have an event system in our code. I would like to set this up so that any particular event can be 'attached' to arbitrary classes and functions in those classes. For example, a "Print" Event may need to call an arbitrary function in an arbitrary class (or a number of these). Therefore the event server needs to have a list of all these class/function pairs for each event type. I am pretty sure I can achieve that with a combination of boost::function and boost::bind. I see how I can use function if I know what the class type is..I would need to store the function and a this pointer in to the event server, but the this pointer would need to be to a specific type - that specified in the boost::function defn. Is there any way to make the this pointer of an arbitrary type such that the function call can be made to any arbitrary function in any arbitrary class? Sorry, I don't have a code snippet to help explain - that's what I'm trying to figure out!! There may well be better ways of doing what we need - those thoughts also gratefully received (nb. Working in a multithreaded environment, so boost:signals may not be appropriate) James This message (including any attachments) contains confidential and/or proprietary information intended only for the addressee. Any unauthorized disclosure, copying, distribution or reliance on the contents of this information is strictly prohibited and may constitute a violation of law. If you are not the intended recipient, please notify the sender immediately by responding to this e-mail, and delete the message from your system. If you have any questions about this e-mail please notify the sender immediately.

4 4

multi_index_container and hash_key lookup with boost boost-1.33.1
by Andrej van der Zee 15 Jun '07

15 Jun '07

Hi, I have a problem with a hash-index to a member of type std::vector<std::strings>. With boost 1.34 it compiles and runs find, but it fails to compile with 1.33! Unfortunately I do not have the luxury to change boost-version. Is there any way around this? I defined my multi_index_container like this: typedef std::vector<std::string> keys_type; struct entry_type { keys_type keys; bool operator<(const entry_type& e) const { ... } }; typedef boost::multi_index::multi_index_container< entry_type, mi::indexed_by< mi::hashed_unique< mi::tag<hash_index_tag>, mi::member<entry_type, keys_type, &entry_type::keys> >, mi::ordered_non_unique< mi::tag<pred_index_tag>, mi::identity<entry_type> > > > mi_entries_type; And get the following compile-error (see the bottom): /usr/bin/g++ -m64 -pipe -Wall -fPIC -O3 -DNDEBUG -I../framework -I/sitestat/src/nightly/2007-06-14/branches/rel-6-00/src/build/../../src/cgi -I/sitestat/src/nightly/2007-06-14/branches/rel-6-00/src/build/../../src/zip_utils -DBOOST_SP_USE_QUICK_ALLOCATOR -DBOOST_DISABLE_THREADS -m64 -pipe -Wall -fPIC -O3 -DNDEBUG -c refper_key.cpp -o release/refper_key.o refper_key.cpp: In member function virtual repgen::operator_base::error_code repgen::refper_key::do_pre_eval(): refper_key.cpp:391: warning: unused variable cols /usr/include/boost/functional/hash/hash.hpp: In static member function static size_t boost::hash_detail::call_hash<T>::call(const T&) [with T = std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >]: /usr/include/boost/functional/hash/hash.hpp:315: instantiated from size_t boost::hash<T>::operator()(const T&) const [with T = std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >] /usr/include/boost/multi_index/hashed_index.hpp:372: instantiated from boost::multi_index::detail::hashed_index_iterator<boost::multi_index::detail::hashed_index_node<typename SuperMeta::type::node_type>, boost::multi_index::detail::bucket_array<typename SuperMeta::type::final_allocator_type> > boost::multi_index::detail::hashed_index<KeyFromValue, Hash, Pred, SuperMeta, TagList, Category>::find(const CompatibleKey&, const CompatibleHash&, const CompatiblePred&) const [with CompatibleKey = std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >, CompatibleHash = boost::hash<std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, CompatiblePred = std::equal_to<std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, KeyFromValue = boost::multi_index::member<repgen::refper_types::entry_type, std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >, &repgen::refper_types::entry_type::keys>, Hash = boost::hash<std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, Pred = std::equal_to<std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, SuperMeta = boost::multi_index::detail::nth_layer<1, repgen::refper_types::entry_type, boost::multi_index::indexed_by<boost::multi_index::hashed_unique<boost::multi_index::tag<repgen::refper_types::hash_index_tag, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::multi_index::member<repgen::refper_types::entry_type, std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >, &repgen::refper_types::entry_type::keys>, mpl_::na, mpl_::na>, boost::multi_index::ordered_non_unique<boost::multi_index::tag<repgen::refper_types::pred_index_tag, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::multi_index::identity<repgen::refper_types::entry_type>, mpl_::na>, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, std::allocator<repgen::refper_types::entry_type> >, TagList = boost::mpl::v_item<repgen::refper_types::hash_index_tag, boost::mpl::vector0<mpl_::na>, 0>, Category = boost::multi_index::detail::hashed_unique_tag] /usr/include/boost/multi_index/hashed_index.hpp:362: instantiated from boost::multi_index::detail::hashed_index_iterator<boost::multi_index::detail::hashed_index_node<typename SuperMeta::type::node_type>, boost::multi_index::detail::bucket_array<typename SuperMeta::type::final_allocator_type> > boost::multi_index::detail::hashed_index<KeyFromValue, Hash, Pred, SuperMeta, TagList, Category>::find(const CompatibleKey&) const [with CompatibleKey = repgen::refper_types::keys_type, KeyFromValue = boost::multi_index::member<repgen::refper_types::entry_type, std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >, &repgen::refper_types::entry_type::keys>, Hash = boost::hash<std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, Pred = std::equal_to<std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, SuperMeta = boost::multi_index::detail::nth_layer<1, repgen::refper_types::entry_type, boost::multi_index::indexed_by<boost::multi_index::hashed_unique<boost::multi_index::tag<repgen::refper_types::hash_index_tag, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::multi_index::member<repgen::refper_types::entry_type, std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >, &repgen::refper_types::entry_type::keys>, mpl_::na, mpl_::na>, boost::multi_index::ordered_non_unique<boost::multi_index::tag<repgen::refper_types::pred_index_tag, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::multi_index::identity<repgen::refper_types::entry_type>, mpl_::na>, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, std::allocator<repgen::refper_types::entry_type> >, TagList = boost::mpl::v_item<repgen::refper_types::hash_index_tag, boost::mpl::vector0<mpl_::na>, 0>, Category = boost::multi_index::detail::hashed_unique_tag] refper_key.cpp:272: instantiated from here /usr/include/boost/functional/hash/hash.hpp:132: error: no matching function for call to hash_value(const std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&) /usr/include/boost/functional/hash/hash.hpp:89: note: candidates are: size_t boost::hash_value(int) /usr/include/boost/functional/hash/hash.hpp:94: note: size_t boost::hash_value(unsigned int) /usr/include/boost/functional/hash/hash.hpp:99: note: size_t boost::hash_value(long int) /usr/include/boost/functional/hash/hash.hpp:104: note: size_t boost::hash_value(long unsigned int) /usr/include/boost/functional/hash/hash.hpp:293: note: size_t boost::hash_value(float) /usr/include/boost/functional/hash/hash.hpp:298: note: size_t boost::hash_value(double) /usr/include/boost/functional/hash/hash.hpp:303: note: size_t boost::hash_value(long double) Thanks! Andrej ___________________________________________________________ Yahoo! Mail is the world's favourite email. Don't settle for less, sign up for your free account today http://uk.rd.yahoo.com/evt=44106/*http://uk.docs.yahoo.com/mail/winter07.ht…

2 2

[date time] performant?
by John McMahon 14 Jun '07

14 Jun '07

Hi, I've been browsing the online documentation for the date time library, which is a model of good documentation (unlike boost::test, for example) and it looks pretty well designed. I wanted to know if there have been any discussions or benchmarks of how efficient it is? Do people have any general comments on this? Some background: I've been looking at quantlib (www.quantlib.org) - a c++ library which performs financial valuation calculations, and whilst they use boost, they have chosen to write their own Date and Calendar classes. Dates, holiday calendars, period calculations, etc, are commonly used in finanial calculations and a performant library generally would add great value. thanks in advance, John McMahon

2 1

Problem with boost serialization: shared_ptr
by Michel Pineau 14 Jun '07

14 Jun '07

Hello, I'm trying to serialize many boost::shared_ptr to the same object but through different base classes. When I look at the boost::shared_ptr for the base classes they are not properly set. I created a simple example that show my problem. The test program output is: Running 1 test case... In function ABC In function A In function B In function C In function ABC In function A In function A In function A I'm using boost 1.33.1 on Linux with gcc 3.4.5 (Red Hat 3.4.5-2). Thanks for your help, Michel :) #include <sstream> #include <iostream> #include <boost/shared_ptr.hpp> #include <boost/archive/text_oarchive.hpp> #include <boost/archive/text_iarchive.hpp> #include <boost/serialization/serialization.hpp> #include <boost/serialization/export.hpp> #include <boost/serialization/shared_ptr.hpp> #include <boost/test/unit_test.hpp> #include <boost/test/included/unit_test_framework.hpp> //---------------------------------------------------------------------------- // class IA { public: IA() : a(1) { } virtual ~IA() { } virtual void fctA() = 0; protected: int a; private: friend class boost::serialization::access; template<class Archive> void serialize(Archive& ar, const unsigned int i_version) { ar & BOOST_SERIALIZATION_NVP(a); } }; BOOST_IS_ABSTRACT(IA) //---------------------------------------------------------------------------- // class IB { public: IB() : b(2) { } virtual ~IB() { } virtual void fctB() = 0; protected: int b; private: friend class boost::serialization::access; template<class Archive> void serialize(Archive& ar, const unsigned int i_version) { ar & BOOST_SERIALIZATION_NVP(b); } }; BOOST_IS_ABSTRACT(IB) //---------------------------------------------------------------------------- // class IC { public: IC() : c(3) { } virtual ~IC() { } virtual void fctC() = 0; protected: int c; private: friend class boost::serialization::access; template<class Archive> void serialize(Archive& ar, const unsigned int i_version) { ar & BOOST_SERIALIZATION_NVP(c); } }; BOOST_IS_ABSTRACT(IC) //---------------------------------------------------------------------------- // class ABC : public IA, public IB, public IC { public: ABC() : abc(4) { } virtual void fctABC() { std::cout << "In function ABC" << std::endl; } virtual void fctA() { std::cout << "In function A" << std::endl; } virtual void fctB() { std::cout << "In function B" << std::endl; } virtual void fctC() { std::cout << "In function C" << std::endl; } protected: int abc; private: friend class boost::serialization::access; template<class Archive> void serialize(Archive& ar, const unsigned int i_version) { ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(IA); ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(IB); ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(IC); ar & BOOST_SERIALIZATION_NVP(abc); } }; BOOST_CLASS_EXPORT(ABC) BOOST_SERIALIZATION_SHARED_PTR(ABC) BOOST_SERIALIZATION_SHARED_PTR(IA) BOOST_SERIALIZATION_SHARED_PTR(IB) BOOST_SERIALIZATION_SHARED_PTR(IC) //---------------------------------------------------------------------------- // class SharedPtrTest { public: void testSharedPtr() { std::stringstream w_stream; { boost::shared_ptr<ABC> abc(new ABC()); boost::shared_ptr<IA> a(abc); boost::shared_ptr<IB> b(abc); boost::shared_ptr<IC> c(abc); abc->fctABC(); a->fctA(); b->fctB(); c->fctC(); boost::archive::text_oarchive oa(w_stream); oa << BOOST_SERIALIZATION_NVP(abc); oa << BOOST_SERIALIZATION_NVP(a); oa << BOOST_SERIALIZATION_NVP(b); oa << BOOST_SERIALIZATION_NVP(c); } { boost::shared_ptr<ABC> abc; boost::shared_ptr<IA> a; boost::shared_ptr<IB> b; boost::shared_ptr<IC> c; boost::archive::text_iarchive ia(w_stream); ia >> BOOST_SERIALIZATION_NVP(abc); ia >> BOOST_SERIALIZATION_NVP(a); ia >> BOOST_SERIALIZATION_NVP(b); ia >> BOOST_SERIALIZATION_NVP(c); abc->fctABC(); a->fctA(); b->fctB(); c->fctC(); } } }; //---------------------------------------------------------------------------- // class SharedPtrTestSuite : public boost::unit_test::test_suite { public: SharedPtrTestSuite() : test_suite("SharedPtr") { boost::shared_ptr<SharedPtrTest> w_instance(new SharedPtrTest()); add(BOOST_CLASS_TEST_CASE(&SharedPtrTest::testSharedPtr, w_instance)); } }; //---------------------------------------------------------------------------- // boost::unit_test::test_suite* init_unit_test_suite(int, char* []) { boost::unit_test::test_suite* test = BOOST_TEST_SUITE("Unit test"); test->add(new SharedPtrTestSuite()); return test; } Combattez les méchants pourriels... Le filtre SpamGuard vous aide à lutter efficacement contre les pourriels sur le Tout-nouveau Yahoo! Courriel http://us.rd.yahoo.com/evt=40705/*http://mrd.mail.yahoo.com/try_beta?.intl=…

2 1

Re: [Boost-users] Getting the argument types from a function type
by Benjamin Winkler 14 Jun '07

14 Jun '07

Hello Kirit, to solve your specific problem, you could just do without Boost.function and also use templates for operator(): template <class C, typename F> class with_binder { C& m_this; F m_fn; public: with_binder(C& ref, F fn) : m_this(ref), m_fn(fn) { } // one parameter template <typename T1> const with_binder<C,F>& operator()(T1& v1) const { (m_this.*m_fn)(v1); return *this; } template <typename T1> const with_binder<C,F>& operator()(const T1& v1) const { (m_this.*m_fn)(v1); return *this; } // two parameters template <typename T1, typename T2> const with_binder<C,F>& operator()(T1& v1, T2& v2) const { (m_this.*m_fn)(v1, v2); return *this; } template <typename T1, typename T2> const with_binder<C,F>& operator()(const T1& v1, const T2& v2) const { (m_this.*m_fn)(v1, v2); return *this; } // ... and so on ... }; template <class C, typename F> with_binder<C,F> with(C& ref, F fn) { return with_binder<C,F>(ref,fn); } Regards, Benjamin >I've been playing around with a few functional programming idioms in C++ >using Boost.function and Boost.lambda and was wondering if it was >possible to fetch out the argument type (i.e. int) from a type like this: > >void (*somefunc)( int ) > >It looks to me like boost::function<> might be doing something along >these lines. > >I've been working on a version of 'with' for use in initialising lists >etc. At the moment you need to do this: > > std::list< int > list1; > list1.push_back( 3 ); > list1.push_back( 1 ); > list1.push_back( 4 ); > >But using 'with' you can do this: > > with( list2, &std::list< int >::push_back )( 3 )( 1 )( 4 )( 1 )( 5 ); > >The implementation I have right now is fairly simple: > >template< typename F > >struct with_binder { > with_binder( F f ) > : m_f( f ) { > } > const with_binder &operator()( int i ) const { > m_f( i ); > return *this; > } >private: > F m_f; >}; >template< typename O, typename F > inline >with_binder< boost::function< void ( int ) > > with( O &o, F f ) { > return with_binder< boost::function< void ( int ) > >( >boost::lambda::bind( f, &o, boost::lambda::_1 ) ); >} > >But the 'int' argument type is hard coded. I could have it as the first >template parameter to 'with' and simply require that it is given when >using 'with', but it would neater if it could be derived from the type >'F' in 'with'. Clearly to be more generally useful it also needs to be >extended for multiple parameters. > > >K > >_______________________________________________ >Boost-users mailing list >Boost-users(a)lists.boost.org >http://lists.boost.org/mailman/listinfo.cgi/boost-users

4 3

boost python: undefined reference in mingw compiler.
by chun ping wang 14 Jun '07

14 Jun '07

Hi i try compiling boost.python using make a file. On cygwin i got it to work creating .pydf files. I tried the same on windows python2.5 with boost 1.34 I get undefined reference errors such as this. ./boost_python/dfaPythonWrapper.o(.text+0x12a): In function `initdfa': C:/CPW/cs_classes/./cs386/c++/dfaPythonWrapper.cpp:5: undefined reference to `_imp___ZN5boost6python6detail11init_moduleEPKcPFvvE' ./boost_python/dfaPythonWrapper.o(.text$_ZN5boost6python6class_I3DFANS0_6detail13not_specifiedES4_S4_EC1INS0_4initISt3mapINS_6tuples5tupleIciNS9_9null_typeESB_SB_SB_SB_SB_SB_SB_EEiSt4lessISC_ESaISt4pairIKSC_iEEESt3setIiSD_IiESaIiEEN4mpl_5void_ESP_SP_SP_SP_SP_SP_SP_SP_SP_SP_SP_SP_EEEEPKcRKNS0_9init_baseIT_EE[boost::python::class_<DFA, boost::python::detail::not_specified, boost::python::detail::not_specified, boost::python::detail::not_specified>::class_<boost::python::init<std::map<boost::tuples::tuple<char, int, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type>, int, std::less<boost::tuples::tuple<char, int, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type> >, std::allocator<std::pair<boost::tuples::tuple<char, int, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type> const, int> > >, std::set<int, std::less<int>, std::allocator<int> >, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_> >(char const*, boost::python::init_base<boost::python::init<std::map<boost::tuples::tuple<char, int, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type>, int, std::less<boost::tuples::tuple<char, int, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type> >, std::allocator<std::pair<boost::tuples::tuple<char, int, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type> const, int> > >, std::set<int, std::less<int>, std::allocator<int> >, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_> > const&)]+0x76): In function `ZN5boost6python7type_idIRVKSt3setIiSt4lessIiESaIiEEEENS0_9type_infoEv': C:/Boost/include/boost_1_34/boost/python/converter/registered.hpp: undefined reference to `_imp___ZN5boost6python7objects10class_baseC2EPKcjPKNS0_9type_infoES4_' ./boost_python/dfaPythonWrapper.o(.text$_ZN5boost6python3defIPF3DFARKSsEEEvPKcT_[void boost::python::def<DFA (*)(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)>(char const*, DFA (*)(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&))]+0x78):C:/Boost/include/boost_1_34/boost/python/converter/registered.hpp: undefined reference to `_imp___ZN5boost6python6detail17scope_setattr_docEPKcRKNS0_3api6objectES3_' ./boost_python/dfaPythonWrapper.o(.text$_ZN5boost6python6class_I3DFANS0_6detail13not_specifiedES4_S4_E10initializeINS0_9init_baseINS0_4initISt3mapINS_6tuples5tupleIciNSA_9null_typeESC_SC_SC_SC_SC_SC_SC_EEiSt4lessISD_ESaISt4pairIKSD_iEEESt3setIiSE_IiESaIiEEN4mpl_5void_ESQ_SQ_SQ_SQ_SQ_SQ_SQ_SQ_SQ_SQ_SQ_SQ_EEEEEEvRKT_[void boost::python::class_<DFA, boost::python::detail::not_specified, boost::python::detail::not_specified, boost::python::detail::not_specified>::initialize<boost::python::init_base<boost::python::init<std::map<boost::tuples::tuple<char, int, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type>, int, std::less<boost::tuples::tuple<char, int, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type> >, std::allocator<std::pair<boost::tuples::tuple<char, int, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type> const, int> > >, std::set<int, std::less<int>, std::allocator<int> >, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_> > >(boost::python::init_base<boost::python::init<std::map<boost::tuples::tuple<char, int, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type>, int, std::less<boost::tuples::tuple<char, int, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type> >, std::allocator<std::pair<boost::tuples::tuple<char, int, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type, boost::tuples::null_type> const, int> > >, std::set<int, std::less<int>, std::allocator<int> >, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_, mpl_::void_> > const&)]+0x24):C:/Boost/include/boost_1_34/boost/python/converter/registered.hpp: undefined reference to `_imp___ZN5boost6python7objects10class_base17set_instance_sizeEj' ./boost_python/dfaPythonWrapper.o(.text$_ZN5boost6python6class_I3DFANS0_6detail13not_specifiedES4_S4_E8def_implIS2_MS2_FbRKSsRKiENS3_10def_helperIPKcS4_S4_S4_EEEEvPT_SF_T0_RKT1_z[void boost::python::class_<DFA, boost::python::detail::not_specified, boost::python::detail::not_specified, boost::python::detail::not_specified>::def_impl<DFA, bool (DFA::*)(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int const&), boost::python::detail::def_helper<char const*, boost::python::detail::not_specified, boost::python::detail::not_specified, boost::python::detail::not_specified> >(DFA*, char const*, bool (DFA::*)(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int const&), boost::python::detail::def_helper<char const*, boost::python::detail::not_specified, boost::python::detail::not_specified, boost::python::detail::not_specified> const&, ...)]+0xef):C:/Boost/include/boost_1_34/boost/python/converter/registered.hpp: undefined reference to `_imp___ZN5boost6python7objects16add_to_namespaceERKNS0_3api6objectEPKcS5_S7_' ./boost_python/dfaPythonWrapper.o(.text$_ZN5boost6python6detail17make_function_auxIM3DFAFbRKSsRKiENS0_21default_call_policiesENS_3mpl7vector4IbRS3_S5_S7_EEN4mpl_4int_ILi0EEEEENS0_3api6objectET_RKT0_RKT1_RKSt4pairIPKNS1_7keywordESU_ET2_[boost::python::api::object boost::python::detail::make_function_aux<bool (DFA::*)(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int const&), boost::python::default_call_policies, boost::mpl::vector4<bool, DFA&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int const&>, mpl_::int_<0> >(bool (DFA::*)(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int const&), boost::python::default_call_policies const&, boost::mpl::vector4<bool, DFA&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int const&> const&, std::pair<boost::python::detail::keyword const*, boost::python::detail::keyword const*> const&, mpl_::int_<0>)]+0x8b):C:/Boost/include/boost_1_34/boost/python/converter/registered.hpp: undefined reference to `_imp___ZN5boost6python7objects15function_objectERKNS1_11py_functionERKSt4pairIPKNS0_6detail7keywordES9_E' ./boost_python/dfaPythonWrapper.o(.text$_ZN5boost6python6detail17make_function_auxIPF3DFARKSsENS0_21default_call_policiesENS_3mpl7vector2IS3_S5_EEEENS0_3api6objectET_RKT0_RKT1_[boost::python::api::object boost::python::detail::make_function_aux<DFA (*)(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&), boost::python::default_call_policies, boost::mpl::vector2<DFA, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&> >(DFA (*)(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&), boost::python::default_call_policies const&, boost::mpl::vector2<DFA, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&> const&)]+0x7d):C:/Boost/include/boost_1_34/boost/python/converter/registered.hpp: undefined reference to `_imp___ZN5boost6python7objects15function_objectERKNS1_11py_functionE' ./boost_python/dfaPythonWrapper.o(.text$_ZN5boost6python7objects21py_function_impl_baseC2Ev[boost::python::objects::py_function_impl_base::py_function_impl_base()]+0x14):C:/Boost/include/boost_1_34/boost/python/converter/registered.hpp: undefined reference to `_imp___ZTVN5boost6python7objects21py_function_impl_baseE' ./boost_python/dfaPythonWrapper.o(.text$_ZN5boost6python9converter22shared_ptr_from_pythonI3DFAEC1Ev[boost::python::converter::shared_ptr_from_python<DFA>::shared_ptr_from_python()]+0x2f):C:/Boost/include/boost_1_34/boost/python/converter/registered.hpp: undefined reference to `_imp___ZN5boost6python9converter8registry6insertEPFPvP7_objectEPFvS5_PNS1_30rvalue_from_python_stage1_dataEENS0_9type_infoE' ./boost_python/dfaPythonWrapper.o(.text$_ZN5boost6python7objects19register_dynamic_idI3DFAEEvPT_[void boost::python::objects::register_dynamic_id<DFA>(DFA*)]+0x27):C:/Boost/include/boost_1_34/boost/python/converter/registered.hpp: undefined reference to `_imp___ZN5boost6python7objects23register_dynamic_id_auxENS0_9type_infoEPFSt4pairIPvS2_ES4_E' ./boost_python/dfaPythonWrapper.o(.text$_ZN5boost6python19to_python_converterI3DFANS0_7objects18class_cref_wrapperIS2_NS3_13make_instanceIS2_NS3_12value_holderIS2_EEEEEEEC2Ev[boost::python::to_python_converter<DFA, boost::python::objects::class_cref_wrapper<DFA, boost::python::objects::make_instance<DFA, boost::python::objects::value_holder<DFA> > > >::to_python_converter()]+0x27):C:/Boost/include/boost_1_34/boost/python/converter/registered.hpp: undefined reference to `_imp___ZN5boost6python9converter8registry6insertEPFP7_objectPKvENS0_9type_infoE' ./boost_python/dfaPythonWrapper.o(.text$_ZN5boost6python9converter22shared_ptr_from_pythonI3DFAE11convertibleEP7_object[boost::python::converter::shared_ptr_from_python<DFA>::convertible(_object*)]+0x11):C:/Boost/include/boost_1_34/boost/python/converter/registered.hpp: undefined reference to `_imp___Py_NoneStruct' ./boost_python/dfaPythonWrapper.o(.text$_ZN5boost6python9converter22shared_ptr_from_pythonI3DFAE11convertibleEP7_object[boost::python::converter::shared_ptr_from_python<DFA>::convertible(_object*)]+0x32):C:/Boost/include/boost_1_34/boost/python/converter/registered.hpp: undefined reference to `_imp___ZN5boost6python9converter22get_lvalue_from_pythonEP7_objectRKNS1_12registrationE' ./boost_python/dfaPythonWrapper.o(.text$_ZN5boost6python9converter22shared_ptr_from_pythonI3DFAE9constructEP7_objectPNS1_30rvalue_from_python_stage1_dataE[boost::python::converter::shared_ptr_from_python<DFA>::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)]+0xfa):C:/Boost/include/boost_1_34/boost/python/converter/registered.hpp: undefined reference to `_imp___ZN5boost6python9converter18shared_ptr_deleterC1ENS0_6handleI7_objectEE' ./boost_python/dfaPythonWrapper.o(.text$_ZN5boost6python9converter22shared_ptr_from_pythonI3DFAE9constructEP7_objectPNS1_30rvalue_from_python_stage1_dataE[boost::python::converter::shared_ptr_from_python<DFA>::construct(_object*, boost::python::converter::rvalue_from_python_stage1_data*)]+0x1ce): In function `Z15init_module_dfav': C:/CPW/cs_classes/./cs386/c++/dfaPythonWrapper.cpp:7: undefined reference to `_imp___ZN5boost6python9converter18shared_ptr_deleterD1Ev' ..... C:/Boost/lib/libboost_python-mgw34-1_34.a(function.o)(.text+0x52): function.cpp: undefined reference to `_imp___Py_NotImplementedStruct' C:/Boost/lib/libboost_python-mgw34-1_34.a(function.o)(.text+0x5b): function.cpp: undefined reference to `_imp___Py_NotImplementedStruct' C:/Boost/lib/libboost_python-mgw34-1_34.a(function.o)(.text+0xaa): function.cpp: undefined reference to `_imp___Py_NoneStruct' C:/Boost/lib/libboost_python-mgw34-1_34.a(function.o)(.text+0xba): function.cpp: undefined reference to `_imp__PyMethod_New' C:/Boost/lib/libboost_python-mgw34-1_34.a(function.o)(.text+0xe1): function.cpp: undefined reference to `_imp__PyExc_RuntimeError' C:/Boost/lib/libboost_python-mgw34-1_34.a(function.o)(.text+0xec): function.cpp: undefined reference to `_imp__PyErr_SetString' C:/Boost/lib/libboost_python-mgw34-1_34.a(function.o)(.text+0x218): function.cpp: undefined reference to `_imp___Py_NoneStruct' C:/Boost/lib/libboost_python-mgw34-1_34.a(function.o)(.text+0x25b): function.cpp: undefined reference to `_imp___Py_NoneStruct' Thanks for the help in advance.

2 3

optimizing use of dynamic_bitset
by Dave Steffen 14 Jun '07

14 Jun '07

Hi Folks, Having gotten a big chunk of code to work, I'm now spending a few days making it fast. So far, I've removed enough overhead to drop our runtime by a factor of 4, and a big part of that was replacing some other data structures with dynamic_bitset. Profiling data now indicates that one of the more expensive operations is spending most of its time calling dynamic_bitset<>::test a bajillion times. My question is this: is dynamic_bitset::test generally thought to be the fastest way to access a specific bit in a dynamic_bitset? Are there other ways to determine if bit n is set? (I assume that anything using dynamic_bitset::operator[] will be slower, since it has to set up a proxy, but have not tested this.) Any thoughts are appreciated. Thanks! -- Dave Steffen, Ph.D. Disobey this command! Software Engineer IV - Douglas Hofstadter Numerica Corporation dg@steffen a@t numerica d@ot us (remove @'s to email me)

2 1

Boost 1.34 and VC++ 64
by Yutaka Leon Suematsu 14 Jun '07

14 Jun '07

Hi boost users, I am trying to install Boost 1.34 in a Vista x64 (Core-duo) & VC++ 2005. I could compile the x32 version without any problems. But, when trying to compile the x64 version I have the popup message "Windows cannot open this file : execution_monitor.obj.rsp" The command I used was: bjam --build-dir=C:\tmp\build-boost --toolset=msvc address-model=64 stage Any help would be highly appreciate, Yutaka Leon. On 2007/06/05, at 22:38, boost-users-request(a)lists.boost.org wrote: > Send Boost-users mailing list submissions to > boost-users(a)lists.boost.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.boost.org/mailman/listinfo.cgi/boost-users > or, via email, send a message with subject or body 'help' to > boost-users-request(a)lists.boost.org > > You can reach the person managing the list at > boost-users-owner(a)lists.boost.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Boost-users digest..." > > > Today's Topics: > > 1. Pb compiling spirit with Sun C++ 5.5 (Christophe Delarue) > 2. program_options linking problem (Moritz Moeller) > 3. Formatting and passing variable parameters. > (Prasanta K Chakravarty) > 4. [serialization]: text (xml) iarchive - format options for > integers? (Frank Bergemann) > 5. Re: [integer] Request: long long (64 bits) supportforint_t > and uint_t (me22) > 6. lib folder? (Mike Wyatt) > 7. Re: lib folder? (dhruva) > 8. Re: Boost 1.34 and VC++ x64 (Andreas Fabri) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 5 Jun 2007 10:20:49 +0200 > From: "Christophe Delarue" <christophe.delarue(a)gmail.com> > Subject: [Boost-users] Pb compiling spirit with Sun C++ 5.5 > To: boost-users(a)lists.boost.org > Message-ID: > <df19a5aa0706050120h1354f677yb7192b8cd8f78dba(a)mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > HI boost users, > > We are trying to compile boost spirit to use the xml serialization, > but we > got compiler error on : > CC -V > CC: Sun C++ 5.5 2003/03/12 > > > + /Soft/sunstudio/8/bin/CC +d -g -xs -mt -DBOOST_ALL_DYN_LINK=1 > + -DBOOST_ALL_NO_LIB=1 -I. -I/Home/ut0bcm/Boost/boost_1_34_0 > + -I/Soft/sunstudio/8/prod/include/CC/stlport4 -I/usr/include > + -library=stlport4 -c -o > bin.v2/libs/wave/build/sun/debug/threading-multi/ > instantiate_cpp_exprgrammar.o > libs/wave/src/instantiate_cpp_exprgrammar.cpp > > "./boost/spirit/phoenix/actor.hpp", line 345: Error: Could not find > a match > for phoenix::actor<phoenix::BaseT>::operator()(phoenix::A&) const. > "./boost/spirit/phoenix/actor.hpp", line 354: Error: Could not find > a match > for phoenix::actor<phoenix::BaseT>::operator()(phoenix::A&, > phoenix::B&) > const. > "./boost/spirit/phoenix/actor.hpp", line 354: Error: Too many args in > template, from phoenix::B on ignored. > "./boost/spirit/phoenix/actor.hpp", line 363: Error: Could not find > a match > for phoenix::actor<phoenix::BaseT>::operator()(phoenix::A&, > phoenix::B&, > phoenix::C&) const. > "./boost/spirit/phoenix/actor.hpp", line 363: Error: Too many args in > template, from phoenix::B on ignored. > "./boost/spirit/phoenix/actor.hpp", line 373: Error: Could not find > a match > for phoenix::actor<phoenix::BaseT>::operator()(phoenix::A&, > phoenix::B&, > phoenix::C&, phoenix::D&) const. > "./boost/spirit/phoenix/actor.hpp", line 373: Error: Too many args in > template, from phoenix::B on ignored. > "./boost/spirit/phoenix/actor.hpp", line 382: Error: Could not find > a match > for phoenix::actor<phoenix::BaseT>::operator()(phoenix::A&, > phoenix::B&, > phoenix::C&, phoenix::D&, phoenix::E&) const. > "./boost/spirit/phoenix/actor.hpp", line 382: Error: Too many args in > template, from phoenix::B on ignored. > "./boost/spirit/phoenix/actor.hpp", line 397: Error: Could not find > a match > for phoenix::actor<phoenix::BaseT>::operator()(phoenix::A&, > phoenix::B&, > phoenix::C&, phoenix::D&, phoenix::E&, phoenix::F&) const. > "./boost/spirit/phoenix/actor.hpp", line 397: Error: Too many args in > template, from phoenix::B on ignored. > "./boost/spirit/phoenix/actor.hpp", line 589: Error: Could not find > a match > for phoenix::actor<phoenix::BaseT>::operator()(const > phoenix::unpack_tuple<phoenix::actor<phoenix::BaseT>::TupleT>&) const. > > > -- > -- > Christophe Delarue > mailto:christophe.delarue@gmail.com > 06 12 95 49 56 >

3 2

derivative work
by Ruediger Berlich 14 Jun '07

14 Jun '07

Hi there, just a short question about the meaning of "derivative work" in the Boost software license (and the associated requirement to list the Copyright and license terms in such work). My understanding of the term "derivative work" is that it applies to modifications of the original code only, not to software _using_ the code. I.e., if I were to modify the code in shared_ptr.hpp, then of course I would have to include the original Copyright notices and license terms. Whereas, if I use shared_ptr in my software, I do not need to list the original Copyright notices and license terms. Plus, the Copyright of my own cose is solely with me. Is this interpretation correct ? Best Regards and thanks for your help, Ruediger Berlich

10 19

Getting the argument types from a function type
by Kirit Sælensminde 14 Jun '07

14 Jun '07

I've been playing around with a few functional programming idioms in C++ using Boost.function and Boost.lambda and was wondering if it was possible to fetch out the argument type (i.e. int) from a type like this: void (*somefunc)( int ) It looks to me like boost::function<> might be doing something along these lines. I've been working on a version of 'with' for use in initialising lists etc. At the moment you need to do this: std::list< int > list1; list1.push_back( 3 ); list1.push_back( 1 ); list1.push_back( 4 ); But using 'with' you can do this: with( list2, &std::list< int >::push_back )( 3 )( 1 )( 4 )( 1 )( 5 ); The implementation I have right now is fairly simple: template< typename F > struct with_binder { with_binder( F f ) : m_f( f ) { } const with_binder &operator()( int i ) const { m_f( i ); return *this; } private: F m_f; }; template< typename O, typename F > inline with_binder< boost::function< void ( int ) > > with( O &o, F f ) { return with_binder< boost::function< void ( int ) > >( boost::lambda::bind( f, &o, boost::lambda::_1 ) ); } But the 'int' argument type is hard coded. I could have it as the first template parameter to 'with' and simply require that it is given when using 'with', but it would neater if it could be derived from the type 'F' in 'with'. Clearly to be more generally useful it also needs to be extended for multiple parameters. K

2 2

chdir
by ivan＠0x4849.net 14 Jun '07

14 Jun '07

Hi, I am trying to build boost on a debian system using bash shell. I am getting erros: /bin/sh: line 1: chdir: command not found Is this a common problem? Should i just alias chdir to cd? Thanks, Ivan --------------------- Ivan Novick http://www.0x4849.net

2 2

graph library : isomorphism.hpp vertex invariant parameter
by Patrick A. La Fratta 14 Jun '07

14 Jun '07

Setting the "vertex_invariant" parameter to the isomorphism function does not seem to have any affect on the behavior of the function. In isomorphism.hpp, it appears that the function "isomorphism_impl" is supposed to read the parameter at the return statement: return isomorphism(G1, G2, f, choose_param(get_param(params, vertex_invariant1_t()), invariant1), choose_param(get_param(params, vertex_invariant2_t()), invariant2), choose_param(get_param(params, vertex_max_invariant_t()), ( invariant2.max )()), index_map1, index_map2 ); If "vertex_invariant1_t()" and "vertex_invariant2_t()" are both changed to "vertex_invariant_t()", the setting of the parameter then seems to have an affect. Has anyone been able to successfully set the vertex_invariant parameter using the named parameter version of the isomorphism function? I have had to resort to calling one of the internal isomorphism functions to set this parameter. any help is appreciated, Patrick

3 5

some libraries missing
by Fulvio Esposito 13 Jun '07

13 Jun '07

Hi all boost users, recently I downloaded source package for version 1.34 from sf.net, but i discovered some library that was accepted were missing (like asio, gil and some others). I think at least they should be in CVS but i've never worked with a source control system. How can I obtain a full distribution from CVS? I'm working on Microsoft Windows XP/Visual C++ Express 2005! Thank you all guys, Fulvio Esposito

2 1

[boost::program_options] optional arguments
by Bryan Green 13 Jun '07

13 Jun '07

Hello, Is there a mechanism in boost::program_options for supporting optional arguments? If not, is there a suggested program_options-based alternative? This question was posed by someone else about a year ago, but did not get a response. Here is the quote: BEGIN QUOTE From: Dale McCoy (dalestan_at_[hidden]) Date: 2006-04-22 21:15:51 I'm trying to convert from getopt (GNU's getopt_long, to be more specific) to boost::program_options, but have run into trouble converting "D::" and {"data",optional_argument,NULL,'D'} (If you're not familiar with getopt, that means that --data is equivalent to -D, and both take an optional argument, so "-D", "--data", "-Darg", and "--data=arg" are all valid.) I see that the first argument to add_option should be "data,D", but then things get fuzzy. I saw nothing in the documentation concerning optional arguments, either directly, or using additional parsers. What is the appropriate method for implementing such options? I'm using currently using Boost 1.33.1. Dale END QUOTE Bryan

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limits.hpp defective
by Daniel Krügler 13 Jun '07

13 Jun '07

Hello, ~3 weeks ago I reported a bug in limits.hpp: May, 21th: "Wrong member definitions in limits.hpp" and also put it into the bug tracking system: http://svn.boost.org/trac/boost/ticket/972 Since no feedback occurred, I repost this now. Another, related question: I found that both SVN and CVS repositories have rather different contents. Could someone explain to me the reasons for these deviations? Thanks in advance, Daniel Krügler

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[intrusive] lock-free algorithms
by Zeljko Vrba 13 Jun '07

13 Jun '07

Are there any plans to extend the intrusive library with lock-free data structures (stacks, FIFO queues)? I'm about to start writing my own lock-free classes and have thought that it'd be nice to include them in the intrusive library, if possible [I've gotten used to the interface, and I don't want to have different interfaces in my code]. My goals: - lock-free stack and queue - SMR (both described in "Safe Memory Reclamation for Dynamic Lock-Free Objects Using Atomic Reads and Writes" by Maged M. Michael) - target platform: Solaris using atomic_ops (3C); possibly also inline ASM for SunCC I don't have neither time nor resources (nor will, for that matter) to make a full implementation that works on all platforms supported by Boost. Also, I do *not* want to use Boost.Thread. The code is parametrized by the following (all related to SMR): - number of participating threads (every "thread" must be associated with a unique integer starting from 0) - number of hazard pointers - batch size SMR also needs static storage accessed by all threads. Any suggestions are welcome.

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astar help
by bringiton bringiton 13 Jun '07

13 Jun '07

I have a number of questions RE the astar-cities example. Why is the distance_heuristic class needed. Is it used to find the weight for a test vertex to the goal vertex? I put a breakpoint in distance_heuristic::operator() and it never gets called. Is it ever used? astar_search (... distance_heuristic<mygraph_t, cost, location*> ...) Do I have to define my own or supply an astar_heuristic? Or can I pass a default heuristic? astar_goal_visitor. Do I need to use this or can I pass a default default_astar_visitor? Are there other ways of reaching a goal without throwing an exception? Thanks. Any advice appreciated

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multi_index_container and templates
by Andrej van der Zee 13 Jun '07

13 Jun '07

Hi, I am trying to set up a multi_index_container-type with a template argument like this: template <typename event_type> struct mi_container { typedef typename mi::composite_key< event_type, mi::const_mem_fun<fields::field_ts, ts_type, &fields::field_ts::ts>, mi::const_mem_fun<fields::field_addr, addr_type, &fields::field_addr::addr>, mi::const_mem_fun<fields::field_port, port_type, &fields::field_port::port> > self_key_type; typedef typename mi::composite_key< event_type, mi::const_mem_fun<fields::field_ts, ts_type, &fields::field_ts::ts>, mi::const_mem_fun<fields::field_peer_addr, addr_type, &fields::field_peer_addr::peer_addr>, mi::const_mem_fun<fields::field_peer_port, port_type, &fields::field_peer_port::peer_port> > peer_key_type; typedef typename mi::multi_index_container< event_type, mi::indexed_by< mi::ordered_non_unique< mi::tag<self_key_tag>, self_key_type>, mi::ordered_non_unique< mi::tag<peer_key_tag>, peer_key_type> > > type; }; mi_container<ev_connect>::type connected; This gives me the following compile-error: main.cpp: In instantiation of mi_container<event::ev_connect>: main.cpp:78: instantiated from here main.cpp:57: error: invalid use of event::fields::field_ts::ts to form a pointer-to-member-function main.cpp:57: note: a qualified-id is required main.cpp:64: error: invalid use of event::fields::field_ts::ts to form a pointer-to-member-function main.cpp:64: note: a qualified-id is required main.cpp:75: error: invalid use of event::fields::field_ts::ts to form a pointer-to-member-function main.cpp:75: note: a qualified-id is required Probably I doing something silly. Note that if I remove the class template and directly specialize it, there is no problem at all. Can anybody help me out? Thanks, Andrej ___________________________________________________________ Yahoo! Mail is the world's favourite email. Don't settle for less, sign up for your free account today http://uk.rd.yahoo.com/evt=44106/*http://uk.docs.yahoo.com/mail/winter07.ht…

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