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

2 4

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

3 2

[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.

2 6

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

1 1

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…

2 5

[asio] http-server example
by Daniel Albuschat 13 Jun '07

13 Jun '07

Hello there, I'm currently building my own, specialized http-server based on the http-server example. I experience crashes for certain types of replies. Here's something I really do not understand: In connection.cpp, after request_parser_.parse() finished and result == true, there is this line: boost::asio::async_write(socket_, reply_.to_buffers(), boost::bind(&connection::handle_write, shared_from_this(), boost::asio::placeholders::error)); It's the last user-code in the stacktrace of the crash that I frequently experience. What bothers me is the reply_.to_buffers() function. It looks like this: std::vector<boost::asio::const_buffer> reply::to_buffers() { std::vector<boost::asio::const_buffer> buffers; buffers.push_back(status_strings::to_buffer(status)); for (std::size_t i = 0; i < headers.size(); ++i) { header& h = headers[i]; buffers.push_back(boost::asio::buffer(h.name)); buffers.push_back(boost::asio::buffer(misc_strings::name_value_separator)); buffers.push_back(boost::asio::buffer(h.value)); buffers.push_back(boost::asio::buffer(misc_strings::crlf)); } buffers.push_back(boost::asio::buffer(misc_strings::crlf)); buffers.push_back(boost::asio::buffer(content)); return buffers; } How can this even work? It adds temporaries (the misc_strings are const char[]s) to a const_buffer-vector and reads them later. Even the references to h.name, etc. seem invalid to me, since the io is asynchronous and there's no guarantee that they don't change. IMHO the whole content needs to be COPIED to new buffers and then, after the async_write finished, deleted. Am I missing something? Was the author of this example not aware of the const_buffer's ownership policy (i.e. it is *not* owner of the data)? I've spent hours and hours in debugging now, but I just can't figure out where it goes wrong. You can see the stacktrace here: http://mandrill.fuxx0r.net/c++/paste:7702 Kind regards, Daniel Albuschat -- eat(this); // delicious suicide

2 2

[asio] file streaming
by Chris Fairles 13 Jun '07

13 Jun '07

I give up! I cannot for the life of me figure out buffers and streams. Any help is greatly appreciated. Here's what I have so far: filesize_ = fs::file_size(filepath_); std::ifstream file(filepath_.file_string().c_str(), std::ios::in ); file.seekg (file_offset_, std::ios::beg); //offset typically 0 unless resuming transfer //just trying this for fun boost::asio::ip::tcp::socket::send_buffer_size option; data_socket_.get_option(option); //tcp socket uint64_t size = option.value(); while (bytes_sent < filesize_) { //i test a file 21200678 bytes long. This tranfers anywhere from 21135097 to 21196000. bytes_sent += data_socket_.send(boost::asio::buffer(file.rdbuf(), std::min(size,filesize_-bytes_sent))); //this always transfers 21204202 bytes_sent += data_socket_.send(boost::asio::buffer(file.rdbuf(), size)); } data_socket_.close(); boost::asio::async_read_until(control_socket_, response_, "\r\n", boost::bind(&FTPClient::handleRead, this, boost::asio::placeholders::error)); write_some vs. send give same results. I've also tried something like: char buf[1024]; socket.write_some(buf, file.readsome(buf, 1024)); which deosnt read all the bytes. Sometimes if I check file.rdbuf()->in_avail(), it reports 0 using above method and bytes_sent stops growing about 99% of the way through. I tired setting the the socket linger option to true. No go. I tried making the data_socket a buffered_write_stream, same results. What am I doing wrong? Sometimes bytes_sent is exactly the file size, but the remote file size is slightly less. Maybe closing the socket stream too early? That sends an eof which the server responds to but it should arrive AFTER the data i would think... no clue. please help :) In the meantime, I'm going to go rip up some FSF ftp client code from source forge heh. Thanks Chris

2 2

[iostreams] Using bzip2_decompressor with text files
by Thomas Trummer 13 Jun '07

13 Jun '07

Hi, I have a text file that is compressed with bzip2 and im trying to read with it the iostream lib and parse it with iostream::operator>>. Unfortunately this doesn't work so I wanted to ask if this is an unsupported scenario or if I'm doing something wrong. filtering_istream in; in.push(bzip2_decompressor()); in.push(file_source("text.bz2")); in >> lineId; // std::string lineId Regards, Thomas

1 0

[postmaster@sina.com: boost-users@sina.com??????????]
by Zeljko Vrba 13 Jun '07

13 Jun '07

Enough is enough. I kindly ask the mailing list manager to remove the offending sender(s) (@sina.com) from the mailing list. I attach the complete mail which I get in response to every mail I send to the boost users mailing list. Thanks in advance.

3 2

math/statistics policy-interface feedback requested.
by John Maddock 13 Jun '07

13 Jun '07

Following the successful review of the math-toolkit of special functions and statistical distributions the main feature request was for a better way of customising the library: both for choosing between precision vs speed tradeoffs, and for determining how errors are best handled. I've been experimenting with various policy-based interfaced based on Boost.Parameter, and I think I now have something useable, so I'd like to know what people think: Policy Defaults ~~~~~~~~~~~~~~~ The library will use a sensible set of defaults (throw on domain errors and internal evaluation errors, favour accuracy over speed etc), which can be changed via the usual macro mechanism, so adding: #define BOOST_MATH_DOMAIN_ERROR_POLICY errno_on_error #define BOOST_MATH_OVERFLOW_ERROR_POLICY ignor_error to a user-config header would do what they say to the default policies. Add Hock Changes: ~~~~~~~~~~~~~~~~~ We can create an ad-hock policy change at the call site by using the make_policy function, for example: using namespace boost::math::policy; using namespace boost::math; quantile( poisson(100), 0.05, make_policy( // 5 dicimal digits precision only digits10<10>(), // don't internally promote double->long double for extra precision: promote_double<false>(), // return integer result, immediately below the "real" value: discrete_quantile<integer_below>() )); Which returns the lower 95% quantile (ie critical value) of a poisson distribution with rate parameter of 100 event's per unit time. The result is calculated using only 10 decimal digits internal precision, truncated to the largest integer that gives a CDF less than 0.05. Predefined Policies ~~~~~~~~~~~~~~~~~~~ Although ad-hock policies are useful for testing, I imagine most sites would want a few carefully controlled (and tested) policies. To achieve that you define a typedef of the policy class: using namespace boost::math::policy; typedef policy< // Set error handling: domain_error<throw_on_error>, pole_error<throw_on_error>, overflow_error<throw_on_error>, evaluation_error<throw_on_error>, denorm_error<ignor_error>, underflow_error<ignor_error>, // calculate to 8 decimal digits internally digits10<8>, // don't promote double->long double for accuracy promote_double<false>, // Integer quantiles return the "outside edge": // below the real value for lower critical values, // above it for upper critical values, so that the // area inside contains *at least* the requested coverage: discrete_quantile<integer_outside_edge> > fast_quantile_policy; static fast_quantile_policy fast_quantile; Then we can just use: quantile( poisson(100), 0.05, fast_quantile); In our actual code. Currently this policy interface is vapourware: I have enough of a prototype implemented to know that it's possible to achieve this syntax (this is revision #3 already !), but there's a lot of hairy meta-programming to convert that into something that the library's internals can make use of... so I'd like to know what folks think before I invest too much time messing about with MPL :-) The main disadvantage I've noticed at present, is that the mangled names of the policy class - and therefore all the special functions etc - are *very* long. This has an impact on error messages: in particular we currently use BOOST_CURRENT_FUNCTION to get a nice formatted name of a function that's about to throw, but with function names a couple of pages long I don't think that will be possible with this interface any more :-( Thanks in advance, John Maddock.

2 2

Re: [Boost-users] Boost 1.34 and VC++ 64
by Yutaka Leon Suematsu 13 Jun '07

13 Jun '07

Hi Chris, Thank you for your help. >> The command I used was: >> >> bjam --build-dir=C:\tmp\build-boost --toolset=msvc address-model=64 >> stage > > Hi, > you have to use the 'Visual Studio x64 Win64 Command Prompt', so > the correct environment variables are set and then use bjam like: > > bjam --build-dir=C:\tmp\build-boost --toolset=msvc-8-0_64 stage > I could compile with the toolset "msvc-8.0_64", I didn't know its existence. bjam --build-dir=C:\tmp\build-boost --toolset=msvc-8.0_64 stage Thanks, Yutaka.

1 0

multi_index and base class
by Andrej van der Zee 13 Jun '07

13 Jun '07

Hi, I'm trying to store these classes in a multi_index: struct Foo { int a; }; struct Bar :Foo { }; typedef multi_index_container< Bar, indexed_by< ordered_unique< member<Foo, int, &Bar::a> > > > Bar_container; Notice I have to use "Foo" in the "member<" line. However, even with this, when trying to do a search: Bar_container bar_container; int function() { Bar_container::nth_index<0>::type& a_index = bar_container.get<0>(); Bar_container::nth_index<0>::type::iterator i = a_index.find(5); if (i != a_index.end()) return -1; return 0; } I get this: /usr/include/boost/multi_index/member.hpp: In member function 'Type& boost::multi_index::detail::non_const_member_base<Class, Type, PtrToMember>::operator()(const ChainedPtr&) const [with ChainedPtr = Bar, Class = Foo, Type = int, Type Class::* PtrToMember = &Foo::a]': /usr/include/boost/multi_index/detail/ord_index_ops.hpp:65: instantiated from 'Node* boost::multi_index::detail::ordered_index_find(Node*, const KeyFromValue&, const CompatibleKey&, const CompatibleCompare&) [with Node = boost::multi_index::detail::ordered_index_node<boost::multi_index::detail::i ndex_node_base<Bar> >, KeyFromValue = boost::multi_index::member<Foo, int, &Foo::a>, CompatibleKey = int, CompatibleCompare = std::less<int>]' /usr/include/boost/multi_index/ordered_index.hpp:376: instantiated from 'boost::multi_index::detail::index_iterator<boost::multi_index::detail::orde red_index_node<typename SuperMeta::type::node_type> > boost::multi_index::detail::ordered_index<KeyFromValue, Compare, SuperMeta, TagList, Category>::find(const CompatibleKey&) const [with CompatibleKey = int, KeyFromValue = boost::multi_index::member<Foo, int, &Foo::a>, Compare = std::less<int>, SuperMeta = boost::multi_index::detail::nth_layer<1, Bar, boost::multi_index::indexed_by<boost::multi_index::ordered_unique<boost::mul ti_index::member<Foo, int, &Foo::a>, 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, mpl_::na, mpl_::na>, std::allocator<Bar> >, TagList = boost::mpl::vector0<mpl_::na>, Category = boost::multi_index::detail::ordered_unique_tag]' multitest2.cc:55: instantiated from here /usr/include/boost/multi_index/member.hpp:84: error: no match for 'operator*' in '*x' I've tried a few alternatives such as providing a custom compare function but I always get this error. It seems to have something to do with the fact that the key is in the base class. If I move the key to the derived class (and change the "member<" line), it works fine. Surely there's a way to do this. Anyone know how ? Using gcc version 4.1.2 20061115 (prerelease) (Debian 4.1.1-21) and libboost 1.33.1. Thanks ___________________________________________________________ New Yahoo! Mail is the ultimate force in competitive emailing. Find out more at the Yahoo! Mail Championships. Plus: play games and win prizes. http://uk.rd.yahoo.com/evt=44106/*http://mail.yahoo.net/uk

2 2

Problems instantiating class Boost Python class
by Phil 13 Jun '07

13 Jun '07

Hi, I'm a newbie having some problems instantiating a class written in C++ in Python using Boost.Python. I can get a very simple example working when I expose a function outside of a class, that returns a string, but the below fails as shown, despite building. The enum in the same library however works fine. I've googled the error returned from Python and I get zero hits - has anyone get any idea what I'm doing wrong? I'm using Python 2.5, GCC 4.0.1 and Boost 1.33 on Mac OS X 10.4.9. I don't think it matters but I'm building the solution as a dynamic C++ bsd library in XCode and the changing the Mac OS X .dylib extention to .so as is required by Python. This all works for simpler examples and the enum in this example. Error: TypeError: __init__() should return None, not 'NoneType' Thanks, Phil. From header file example.h: enum payOffType { CALL, PUT }; class Option { public: //defaults to call Option( double strike, double expiry ); double getPutCallMultiplier(); private: double strike; double expiry; payOffType type; }; From cpp file example.cpp: Option::Option( double strike, double expiry ) : strike( strike ), expiry( expiry ), type( CALL ) { cout << "Option Contructor called"; } double Option::getPutCallMultiplier() { return ( type == CALL ) ? 1 : -1; } BOOST_PYTHON_MODULE(libphil_boost) { class_<Option>("Option", init<double, double>()) .def("getPutCallMultiplier", &Option::getPutCallMultiplier) ; enum_<payOffType>("payOffType") .value("CALL", CALL) .value("PUT", PUT) ; } Using Python on the resulting .so: $ python Python 2.5.1 (r251:54863, Jun 10 2007, 17:57:56) [GCC 4.0.1 (Apple Computer, Inc. build 5250)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import libphil_boost >>> p = libphil_boost.Option( 23, 23 ) Option Contructor calledTraceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: __init__() should return None, not 'NoneType' >>>

2 1

boost::pool issue
by v r 12 Jun '07

12 Jun '07

Hi, I have a main object that allocates many small objects via singleton_pool , and during its operation main obj uses up much memory so i want to release that memory before program termination, because main obj performs only support operations in my program. So upon main obj destruction i make a singleton_pool::purge_memory() call in main obj destructor, the memory is released and i should be quite happy,but when the main obj is constructed again the pool allocates twice as much memory as it used before, and it continues to double every time i construct/destruct the main object, so very soon my program hangs up. I wonder what have i done wrong? It seems like something is not reset on memory purge, or maybe it`s a bug? --------------------------------- Вы уже с Yahoo!? Испытайте обновленную и улучшенную Yahoo! Почту!

1 0

[asio] Receiving non-UDP multicast frames?
by Eric Hill 12 Jun '07

12 Jun '07

I have been requested to write a tiny diagnostic application that will listen for Cisco Discovery Protocol (CDP) messages from Cisco switches on a workstation so that the workstation will "know" what switch port it is plugged into. I have found the following information with my limited google-foo: CDP Packet Format: http://www.cisco.com/univercd/cc/td/doc/product/lan/trsrb/frames.htm#xtocid… CDP Information: http://www.cisco.com/en/US/products/hw/switches/ps663/products_tech_note091… The latter link says that CDP uses a destination multicast address 01-00-0c-cc-cc-cc, HDLC protocol type 0x2000 on an Ethernet segment. This is where I get lost. Is that an Ethernet MAC broadcast, or a socket-based broadcast? Can I capture those CDP advertisements with asio? Eric

2 1

Binary 1.34 installer
by Luigi Ballabio 12 Jun '07

12 Jun '07

Hi all, I'm one of the developers of a project that requires a few Boost libraries. First of all, thanks to the people at Boost Consulting who made the binary installer available; we have a constant stream of new users asking for instructions on how to build Boost, and let's just say that since the installer was released for version 1.33.1, it streamlined our answers... we still had a few users we couldn't direct to this solution, though; namely, those behind a corporate firewall. Does the new installer for 1.34 work in this setting? I can't test it myself, as I'm not behind such a firewall. Thanks again, Luigi ---------------------------------------- Blessed is the man who, having nothing to say, abstains from giving wordy evidence of the fact. -- George Eliot

8 8

[Pool] pool_allocator with vector-of-vectors ??
by Williams, Alan B 12 Jun '07

12 Jun '07

I have a question about using the standard allocator interface in the boost.pool library. (I'm using boost 1.34.0 with g++ 3.4.3 on redhat linux, in case it matters.) I've successfully used boost::pool_allocator with individual std::vector objects, but I'm having trouble using it with a vector-of-vectors object, like this: std::vector<std::vector<int, boost::pool_allocator<int> > > myvec(1); myvec[0].push_back(99); The "push_back" line causes a seg-fault, which purify says is an array-bounds-write occurring in boost::simple_segregated_storage<unsigned long>::segregate. Am I misusing the pool_allocator? Thanks, Alan

1 0

[mpl] can't transform a map
by Yuval Ronen 12 Jun '07

12 Jun '07

I have the following code: #include <utility> #include <boost/mpl/map.hpp> #include <boost/mpl/transform.hpp> template <typename MplPair> struct make_ptr_pair1 { typedef std::pair<typename MplPair::first *, typename MplPair::second *> type; }; template <typename First, typename Second> struct make_ptr_pair2 { typedef std::pair<First *, Second *> type; }; int main(int argc, char *argv[]) { namespace mpl = boost::mpl; typedef mpl::map< mpl::pair<int, double> > my_map; //typedef mpl::transform< my_map, make_ptr_pair1<mpl::_1> >::type ptr_pair_seq1; //typedef mpl::transform< my_map, make_ptr_pair2<mpl::_1, mpl::_2> >::type ptr_pair_seq2; return 0; } If I uncomment any of the two mpl::transform lines in main(), the code doesn't compile (VC8). The point is to get a sequence of std::pairs out of the content of the mpl::map. Is there anything I'm doing wrong? Can mpl::transform be used for mpl::map? Maybe I can do it with fusion, but the above code seems to be something that's supposed to be working, isn't it? Yuval

2 5

sun studio 8 5.5 and boost
by Christophe Delarue 12 Jun '07

12 Jun '07

HI boost users, I allready post this request : is boost compatible with compiler sun studio 8 C++ 5.5 ? 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

3 2

how to Serialize boost::Multiaray
by Alejandro Rubinos Carbajal 12 Jun '07

12 Jun '07

I want to know how can i serialize with boost::serialization a two dimensions boost::multiarray.

3 5

bjam upgrade issue
by Joe Angell 12 Jun '07

12 Jun '07

Hello, After upgrading bjam from version 03.01.11 to 03.1.13 I ran into an issue that is not backwards compatible, and I am wondering if someone has an alternative solution. actions svn_export { svn export $(>) $(<) } make $(TOP)/oak/test/out/SMALL/ : $(TOP)/test/xylem_test_data/SMALL/ : svn_export ; This make rule no longer works in the 3.1.13 version upon directories as targets (works fine for file targets). Any suggestions? Thanks, -- --------------- Joe Angell Boulder Labs, Inc. 7105 LaVista Pl Suite 200 Niwot, CO 80503 (303) 817-8252

1 0

Newbie Boost::Graph - How to write to a .dot file
by Erica Calogero 12 Jun '07

12 Jun '07

Hi there, I am having difficulty writing to a .dot file. After typing in the follwoing code (following the example in the book, p.85). write_graphviz("ECgraphs/test_network.dot",angle_list); I get the following error message: Error 89 error C2664: 'boost::write_graphviz' : cannot convert parameter 1 from 'const char [26]' to 'std::ostream &' What code do I have to write to convert my 'const char [26]' to a 'std::ostream &'? Thanks, Kind regards, Erica.

2 1

MPL intersection of type sequences and compile-time performance
by Andrej van der Zee 12 Jun '07

12 Jun '07

Hi, Sorry if this already has been posted, but I have a problem with compile-time performance when trying to get the intersection of two type sequences. For example, when I do something like this: template<typename list1, typename list2> struct intersect { typedef typename boost::mpl::remove_if<list1, mpl::not_< mpl::contains<list2, mpl::_1> >::type type; }; typedef mpl::vector<a,b,...,z> l1; typedef mpl::vector<c,e,t,u,v> l2; typename intersect<list1,list2>::type my_intersection; Then for large type sequences compile-time becomes unacceptable (O(M*N)). Is there a better way to do this? Thanks, Andrej ___________________________________________________________ To help you stay safe and secure online, we've developed the all new Yahoo! Security Centre. http://uk.security.yahoo.com

3 4

[boost::filesystem::path] does it work on windows?? please
by jono 12 Jun '07

12 Jun '07

i won't even include my code. anyone?

3 2

How can i kill boost::thread?
by Meryl Silverburgh 12 Jun '07

12 Jun '07

Hi, If I create a thread using boost::thread() library? boost::thread thrd( &DoWork ) ); How can I kill "thrd" later on? Thank you.

4 4

Performing static_cast<shared_ptr<base>*> on a shared_ptr<derived>*. Any guarantees?
by Pete Bartlett 11 Jun '07

11 Jun '07

I have taken over some code that boils down to ///begin code #include <iostream> #include <boost/shared_ptr.hpp> struct base { int i; base(int i_):i(i_) {} }; struct derived : base { derived(int i): base(i) {} }; int main() { boost::shared_ptr<derived> pd(new derived(5)); void* ptr_to_pd = &pd; boost::shared_ptr<base>* ptr_to_pb = static_cast< boost::shared_ptr<base>* >(ptr_to_pd); std::cout << "\n" << (**ptr_to_pb).i ; //Prints 5 } ///End code Now shared_ptr<B> and shared_ptr<A> are unrelated types, so IIUC there is no guarantee that this will work. Is that right? I know from the shared_ptr documentation that I should refactor in the direction of dynamic_ptr_cast (though complications not shown in the code above make that harder that). However for the time being this code appears to be working. Is that just a fluke? I.e. I am relying on the author of boost::shared_ptr and/or my compiler creators not to do something such that it doesn't work. Is there the possibility that any memory could be deleted twice? Or I am worrying over nothing and in fact there is a reason why the above is safe? Many thanks for any advice you can provide, Peter Bartlett

3 2

[bind] Help with functional composition of shared_ptr::use_count in std::map
by Hughes, James 11 Jun '07

11 Jun '07

Hello all, I'm trying to use bind to help with removeif in a std::map<string, shared_ptr<something> >. I want to remove items where the shared_ptr use_count is 1. map<string, shared_ptr<data> > Fred; RemoveIf(Fred.begin(), Fred.end(), boost::bind(std::equal_to<long>(), 1, boost::bind(&map<string, shared_ptr<data> >::value_type::second::use_count, _1) ) However, I get a compile error on ::second not being a class or namespace. Anyone know how I should do this? I'm a beginner at boost::bind, so be gentle.... 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.

2 4

Re: [Boost-users] [bind] Help with functional compositionofshared_ptr::use_count in std::map
by Küppers, Ben 11 Jun '07

11 Jun '07

> map<string, shared_ptr<data> > Fred; > > RemoveIf(Fred.begin(), > Fred.end(), > boost::bind(&map<string, shared_ptr<data> > >::value_type::second::unique, _1) > ) James, remove_if requires an assignment operator on the operated type but the value_type of a map is defined as std::pair< const T1, T2 >. The const on the first type will cause any assignment to fail. In other words, you can't use remove_if on a map. That said, in order to fix your bind you would need two functors. The type passed to the bind is the value_type of the map which is by definition a pair. You need to first invoke a functor on the pair to extract the second member and then call the member unique on the resulting smart pointer. In order to do so you'll need to write your own extractor, because the STL does not provide a functor to obtain the "second" field from a pair (I haven't found one in boost either). template< class Pair > struct second_of : std::unary_function< Pair, typename Pair:second_type > { typename Pair::second_type opertator()( const Pair& the_pair ) const { return the_pair.second; } }; std::for_each( Fred.begin(), Fred.end(), boost::bind( boost::shared_ptr< data >::unique, boost::bind( second_of< std::map< std::string, boost::shared_ptr< data > >::value_type >(), _1 ) ) ); Note that you can call for_each as it does not require the assignment operator. Hope this helps, Ben This e-mail and any attachment is for authorised use by the intended recipient(s) only. It may contain proprietary material, confidential information and/or be subject to legal privilege. It should not be copied, disclosed to, retained or used by, any other party. If you are not an intended recipient then please promptly delete this e-mail and any attachment and all copies and inform the sender. Thank you.

2 1

Problems with boost.thread
by luca regini 11 Jun '07

11 Jun '07

I have some problems with boost.thread (version 1_34) under gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-52). The library ( all the boost distribution) compiles fine and a bjam on the ./libs/thread/test directory also report a successful test execution. However when i try to explicitly link one of the example (tread_group with the boost tread library using the following command line: g++ -I/opt/six/boost_1_33_1 -I/opt/six/boost_1_34/include/boost-1_34 -pthread -o mytest thread_group.cpp libboost_thread-gcc32-mt-d-1_34.so.1.34.0 i get a segmentation fault. >From a core dump i can see the following stacktrace: 0 0x008e78fb in boost::function0<void, std::allocator<boost::function_base> >::assign_to_own (this=0xb75e5420, f=@0xbfffacb0) at ../../../boost/function/function_template.hpp:647 647 f.vtable->manager(f.functor, this->functor, (gdb) backtrace #0 0x008e78fb in boost::function0<void, std::allocator<boost::function_base> >::assign_to_own (this=0xb75e5420, f=@0xbfffacb0) at ../../../boost/function/function_template.hpp:647 #1 0x008e748f in function0 (this=0xb75e5420, f=@0xbfffacb0) at ../../../boost/function/function_template.hpp:527 #2 0x008e6748 in thread_proxy (param=0xbfffac20) at ../../../libs/thread/src/thread.cpp:106 #3 0x0040f371 in start_thread () from /lib/tls/libpthread.so.0 #4 0x001d8ffe in clone () from /lib/tls/libc.so.6 Where is the problem?? Thanks in advance, Luca Regini

2 2

Question about boost mutex
by Meryl Silverburgh 11 Jun '07

11 Jun '07

Hi, I have a application which uses p_thread for creating threads, can i use the boost mutex classes for thread synchronization? Or the boost mutex class only works with boost thread class? Thank you.

2 1

[program options] & also an apology to the list...
by jono 10 Jun '07

10 Jun '07

...for my earlier grumpy email about program_options. i'm was wanting to pass some sequences to some options using boost::program_options. something like: [me@here ~]$program --opt1 1 2 3 4 --opt2 5 6 7 8 --opt3 xxx yyy zzz if i use desc.add_options("opt1", value< vector<string> >()->multitoken(), "...") i get all the tokens to the end of the line. can i make multitoken() stop eating tokens by recognizing a syntactic element; either an option specifier or a token it can't interpret as a required type? can i inherit from the value_semantic class to read multiple tokens maybe? this whole library is very interesting but subtle. i do better when i can read examples of working code. does anyone know a more extensive discussion of it besides the distibution docs? ...which are great by the way! cheers jono

2 1

Problem with boost::program_options
by Jonas Bösch 10 Jun '07

10 Jun '07

Hi, I'm having a problem with boost::program_options. I attached a stripped-down version of the code that demonstrates the problem. I have a number of positional arguments ( "ops" ), and one normal argument ( "input-file,i" ). Now, if i run the program ./op_test pos0 pos1 pos2 -i non_positional it interpretes the "non_positional" as further positional arg, and not as parameter belonging to -i. Any hints on how to solve this are greatly appreciated. I ran it on: Mac OS X 10.4 on a G5, with the latest XCode ( gcc 4.0.1 ) boost 1.34 Jonas

3 3

BGL: INTERNAL COMPILER ERROR in VC7.1
by Yariv Tal 10 Jun '07

10 Jun '07

This one was already posted by Nicholas Burlett awhile back (see http://lists.boost.org/MailArchives/boost-users/msg06534.php) but I have some new info that may help. The problem: ========= When compiling code that uses the boost.graph library the VC7.1 compiler shouts: c:\boost_1_32_0\boost\mpl\aux_\preprocessed\plain\apply_wrap.hpp(48) : fatal error C1001: INTERNAL COMPILER ERROR As Nicholas already noted, this seems to be due to some compiler problem with the boost.graph out_edge_iterators since it is caused by the following lines in my code: (FilteredGraphGenerator::FilteredGraph is a typedef of a boost::filtered_graph) typedef boost::graph_traits<FilteredGraphGenerator::FilteredGraph> ::out_edge_iterator oedge_iterator; oedge_iterator edgesItr, edgesEnd; boost::tie(edgesItr, edgesEnd) = boost::out_edges(itr->first, m_g.m_filteredGraph); while (edgesItr != edgesEnd) { // do anything! } In fact, it seems to be related to the operator!= between iterators (if the while loop is commented out it compiles). How ever, the error persists even after changing the operator!= to operator== : while (edgesItr == edgesEnd) { // do anything! } ========================================================================== Some findings: =========== * We used to use boost_1_30_0 and the code used to compile PERFECTLY. The problem only appeared after migrating to boost_1_32_0. * Calling directly to the "equal" function in iterator_core_access instead of the operator== works. typedef boost::graph_traits<FilteredGraphGenerator::FilteredGraph> ::out_edge_iterator oedge_iterator; oedge_iterator edgesItr, edgesEnd; boost::tie(edgesItr, edgesEnd) = boost::out_edges(itr->first,m_g.m_filteredGraph); while (boost::iterator_core_access::equal(edgesItr, edgesEnd, boost::mpl::true_())) { // do somthing } * The error message location is at the mpl::apply_wrap2 function. Any relation to the mpl::apply2 function used for declaring the operator== in the BOOST_ITERATOR_FACADE_INTEROP_HEAD macro? Have these functions changed since v1.30.0?

9 8

Problem with ProgramOptions
by Jonas Boesch 10 Jun '07

10 Jun '07

Hi, I'm having a problem with boost::program_options. I attached a stripped-down version of the code that demonstrates the problem. I have a number of positional arguments ( "ops" ), and one normal argument ( "input-file,i" ). Now, if i run the program ./op_test pos0 pos1 pos2 -i non_positional it interpretes the "non_positional" as further positional arg, and not as parameter belonging to -i. Any hints on how to solve this are greatly appreciated. My machine: Mac OS X 10.4 ppc ( G5 ) XCode 2.4.1 ( gcc 4.0.1 ) boost 1.34 Greetings, Jonas The code: // ------------------------ options.h ------------------- #ifndef __VMML__OPTIONS__H__ #define __VMML__OPTIONS__H__ #include <boost/program_options.hpp> #include<map> namespace vmml { namespace boost_po = ::boost::program_options; typedef ::boost::program_options::variables_map var_map; class options { public: options(); void setup( int argc, char* argv[] ); void get_operator_chain( std::vector< std::string >& op_chain ); protected: // generic options boost_po::options_description _generic_options; // op chain boost_po::options_description _all_options; std::map< std::string, boost_po::options_description* > _op_descs; // positional options boost_po::positional_options_description _positional_desc; boost_po::variables_map _options_map; std::vector< std::vector< std::string > > _op_cfgs_from_file; };//class options };//namespace vmml #endif // --------- options.cpp -------------------------------- #include "options.h" #include <iostream> #include <vector> #include <string> namespace vmml { options::options() : _generic_options( "Generic options" ) { _generic_options.add_options() ("input-file,i", "specify input file") ("ops,O", boost_po::value< std::vector< std::string > >()- >composing(), "specify operators " ) ; _positional_desc.add( "ops", -1 ); } void options::setup( int argc, char* argv[] ) { _all_options.add( _generic_options ); boost_po::store( boost_po::command_line_parser( argc, argv ) .options( _all_options ) .positional( _positional_desc ) //.allow_unregistered() .run(), _options_map ); boost_po::notify( _options_map ); } void options::get_operator_chain( std::vector< std::string >& op_chain ) { if ( _options_map.count("ops") ) { const std::vector< std::string >& ops = _options_map["ops"].as< std::vector< std::string > >(); op_chain = ops; } } }//namespace vmml int main( int argc, char** argv ) { vmml::options opt; opt.setup( argc, argv ); std::vector< std::string > ops; opt.get_operator_chain( ops ); std::vector< std::string >::iterator it = ops.begin(); std::vector< std::string >::iterator itend = ops.end(); for( ; it != itend; ++it ) { std::cout << *it << std::endl; } }

1 0

[boost.python] is it possible to make python::dict wrap an existing python dictionary object instead of making a copy?
by Marcin Kalicinski 10 Jun '07

10 Jun '07

python::dict m_mainNamespace = python::dict(m_mainModule.attr("__dict__")); The above code makes a copy of mainModule dictionary. Is it possible to make m_mainNamespace not a copy but a reference to mainModule dictionary? Marcin

2 1

Failing with "Getting Started on Windows" program
by Robert Murphy 10 Jun '07

10 Jun '07

Hello, Following instructions on the "Getting Started on Windows" page, I installed boost using the BoostPro 1.34.0 Installer on XP Pro. I included the Boost.Regex binaries as directed, too. I'm running VS C++ 2005 Express. SDK is not installed. All directories are linked to as instructed to do so in the properties window. I tried building the 2nd program: e-mail checker one. However I get "LINK : fatal error LNK1104: cannot open file 'user32.lib'" as an error. 'user32.lib' is in the SDK My questions are: 1. Must I have the SDK installed to use boost for general unit testing of code I personally generate? 2. Do I have to have the SDK installed for the above program to run? Thank you. _________________________________________________________________ Dont miss your chance to WIN $10,000 and other great prizes from Microsoft Office Live http://clk.atdmt.com/MRT/go/aub0540003042mrt/direct/01/

2 1

posting
by Jan Stetka 10 Jun '07

10 Jun '07

There is a spam issue. Each time I post to the list I get a reply: Delivered-To: jan.stetka(a)gmail.com Received: by 10.143.43.6 with SMTP id v6cs257677wfj; Sat, 9 Jun 2007 12:47:33 -0700 (PDT) Received: by 10.35.8.1 with SMTP id l1mr6177223pyi.1181418453286; Sat, 09 Jun 2007 12:47:33 -0700 (PDT) Received-SPF: fail X-Gmail-Fetch-Info: 485309469254 1 pop.tiscali.co.uk 110 janpstetka(a)tiscali.co.uk Return-Path: <postmaster(a)sina.com> Received: from r3-111.sinamail.sina.com.cn (202.108.3.111) by mail-11.uk.tiscali.com (7.3.110.8) id 4669D52F00718B6F for janpstetka(a)tiscali.co.uk; Sat, 9 Jun 2007 20:52:04 +0200 Received: (qmail 18402 invoked by uid 99); 9 Jun 2007 18:51:56 -0000 Date: 9 Jun 2007 18:51:56 -0000 Message-ID: <20070609185156.18401.qmail(a)mail3-111.sinamail.sina.com.cn> From: <postmaster(a)sina.com> To: <janpstetka(a)tiscali.co.uk> Subject: =?gbk?B?Ym9vc3QtdXNlcnNAc2luYS5jb221xNfUtq+72Li0?= MIME_version: 1.0 Content-type: text/plain; charset=gbk; format=flowed Content-transfer-encoding: 8BIT Your message received. Thank you. -- =================================================================== ע��2G��䣨 http://mail.sina.com.cn/chooseMode.html ��

2 1

interprocess
by Jan Stetka 09 Jun '07

09 Jun '07

Hi, Interprocess still has not been included in the documentation on the main site yet, wouldn't it be good to include it there as soon as possible as it would increase the usage of interprocess. The "quick guide for the impatient" on maps is very good and a welcome addition to the documentation. The documentation at http://ice.prohosting.com/newfunk/ boost/libs/interprocess/doc/html/interprocess/quick_guide.html #interprocess.quick_guide.qg_interprocess_map reads "Boost.Interprocess's map is The construction of map is a bit tricky, because" which could be an editing or typing mistake as it doesn't currently make much sense. Thanks

1 0

Non-trivial examples of Boost::Interprocess library usage
by Evan Torrie 09 Jun '07

09 Jun '07

Hi I'm new to Boost, and also new to Boost::Interprocess. I've been reading through the documentation for Boost::Interprocess, and have successfully written an application which creates a tree like structure in a managed_memory_mapped_file; saves it to disk, and then other processes can reopen that mmap'ed file and traverse the tree. However, I feel like I really am not making the best use of the library, and would like to get more experience by reading other example code from significant applications Does anyone have source code of a non-trivial application that exercises shared memory or memory-mapped files, storing objects with pointers to other objects (and strings) into the shared memory, deleting, updating, retrieving them etc. Specifically, say I'm trying to port an existing heap-based structure into shared memory. struct foo { int x, y; std::vector< std::string > keys; struct foo* left, right; } struct foo* root; What would this translate to in the boost::interprocess world? Is it possible to write templatized versions of these data structures that would work either with the existing std::allocator heap-based memory or with boost::interprocess stateful allocators without needing to create two versions of this data structure? One problem I've encountered is that default constructors for boost::interprocess::vector/string etc are not possible since they need to be constructed with a stateful allocator... so, does this mean that any constructor for object foo requires an allocator to be passed in which is then used in the initializer list to initialize these member containers? Sorry if this doesn't make sense - but any help would be appreciated. Thanks Evan. ----------------------------------------- E> evan.torrie(a)yahoo.com

3 2

Does Boost include SHA-1 implementation?
by Bo Xie 09 Jun '07

09 Jun '07

I know I can call openSSL(or its libcrypto) for SHA-1. But how about Windows? (I can not redistribute openSSL windows version.) My question is: Does Boost include SHA-1 implementation? Thanks! -Bo

3 2

boostcon slides online
by Ares Lagae 08 Jun '07

08 Jun '07

One of the previous posts in this list made me wondering. Wouldn't it be nice to have the slides from the boostcon talks online? Best regards, -- Ares Lagae Computer Graphics Research Group, Katholieke Universiteit Leuven http://www.cs.kuleuven.be/~ares/

2 1

[integer] Request: long long (64 bits) support for int_t and uint_t
by Niels Dekker - mail address until 2007-11-30 08 Jun '07

08 Jun '07

I would like to have "long long" and "unsigned long long" supported by boost::int_t and boost::uint_t. E.g., on Win32, VC++, I would expect int_t<64>::least to get me a long long. Are there plans to add this kind of support? Otherwise, should I submit my request as a ticket to svn.boost.org/trac/boost ? It looks like "long long" support can be added quite easily, as I already did so on my local copy of boost/integer.hpp. -- Niels Dekker http://www.xs4all.nl/~nd/dekkerware Scientific programmer at LKEB, Leiden University Medical Center

5 12

boost::bind as composite
by Boris 08 Jun '07

08 Jun '07

Hi, I have two predicates f1 and f2 and I want to construct the predicate f4 = f1 && f2 using boost::bind. Unfortunately I observe a strange behaviour of boost::bind I can not explain. struct Test { int a; int b; }; Test t = { 1, 2 }; typedef boost::function< bool (Test const&) > Fn; Fn f1 = bind( &Test::a, _1 ) == 1; assert (f1( t )); // Ok Fn f2 = bind( &Test::b, _1 ) == 3; assert (!f2( t )); // ok Fn f3 = bind( std::logical_and< bool >(), bind( &Test::a, _1 ) == 1, bind( &Test::b, _1 ) == 3 ); assert (!f3( t )); // Ok Fn f4 = bind( std::logical_and< bool >(), f1, f2 ); assert (!f4( t )); // assertion failed Why does the predicate f4 behave different from f3? Thanks, Boris

2 1

[parameter] A few usage questions
by John Maddock 08 Jun '07

08 Jun '07

I have a few usage questions for the Boost.Parameter library: 1) If I want to have a function called "policy" that's declared using BOOST_PARAMETER_FUNCTION can I access the types of the arguments both from within the functions body and for the functions return type: BOOST_PARAMETER_FUNCTION( (return-type-computed-from-arguments), policy, tag, // 3. namespace of tag types (optional // optional parameters, with defaults (domain_error, *, throw_on_error) ) (deduced (optional (precision, *, boost::mpl::int_<53>()) ) ) ) { // what type are the arguments? } I realise I can do this with an argument pack, but then either my users will have to call the function with an extra set of parenthesis, or I will have to write a bunch of forwarding functions myself - which itself generates a "what the is the return type" problem. >From within the body of the BOOST_PARAMETER_FUNCTION generated function it appears that I can use the name "Args" to refer to the type of the argument pack, and maybe in the return type as well? But this isn't documented, so can I rely on it? 2) All the arguments I want to pass are actually going to end up being used in meta-programs: for symbolic values, I can make each one a unique enum type, and use the type of the argument (even though it's actually passed as a value) to generate my metacode. But I have one optional argument where I require the value to be an arbitrary compile time constant, the only interface I can come up with at present is something like: policy(_digits10 = mpl::int_<10>()); But I'd really like to be able to write: policy(_digits10 = 12); and have the "12" converted to mpl::int_<12> "by magic", but I can't think of any magic that could be applied here... anyone any ideas? Thanks, John.

2 3

[boost::variant] does 'incomplete<T>' still exist?
by jono 08 Jun '07

08 Jun '07

hi. i read a tutorial at http://electra.lbl.gov/stuff/variant/doc/tutorial.html which says a boost::variant type can be declared with an incomplete type in its typelist by using incomplete<T>. i'm using boost 1.33.1 & i can't find incomplete<T> anywhere. does it still exist? the tutorial is dated '14 February 2003'. can variants use incomplete types? i want to have a variant represent a type which has a variant member. can i do that? i'm working on a kind of envelope/letter idiom for dispatching operations on values. cheers jono

1 0

Re: [Boost-users] port of GameDev SDL lib in Boost?
by Christian Henning 08 Jun '07

08 Jun '07

Hi there, I think there is something wrong with the timer. Whenever I run the code ( see below ) it slows down for whatever reason. Is that a known problem? When I look at the output the frequency is certainly not 10 times a second. #include <windows.h> #include <iostream> #include <sdl.h> using namespace std; Uint32 time_elapsed( Uint32 interval, void* param ) { cout << interval << endl; return ++interval; } int main( int argc, char* argv[] ) { SDL_Init( SDL_INIT_VIDEO | SDL_INIT_TIMER ); SDL_TimerID id = SDL_AddTimer( 100, &time_elapsed, NULL ); SDL_Event event; while( SDL_PollEvent( &event ) >= 0 ) { ::Sleep( 100 ); } return 0; }

2 1

[signal] Invoking connect with same argument a second time allowed?
by Boris 08 Jun '07

08 Jun '07

Is it allowed to call connect() with the same argument (slot) a second time (without disconnecting in between)? I've been checking the documentation at http://www.boost.org/doc/html/boost/signalN.html#id1033842-bb but couldn't find any answer. I assume it is allowed (it doesn't throw any exception et al.) but don't want to build a software based on assumptions really. ;-) Boris

2 3

wave: preprocessing Visual C++ 2005 stl
by Ludovic Aubert 07 Jun '07

07 Jun '07

Hello boost wave users, I have written a sample program which uses boost wave and I am trying to run it on its own source code. The environnement (especially the stl) is Microsoft Visual C++ 2005. Since typically an include file like "vector" will be preprocessed many times (once for every compilation unit), I am saving all the preprocessed tokens in a map<string, map<tuple<int,int>,string> > token, so that token[path][make_tuple(line,col)] = value. Then for each path I am using a forward iterator to spit out all the values into a buffer. The major trouble I have is with the macros #define STD_BEGIN namespace std { #define STD_END } defined in the file "yvals.h" Somehow, STD_BEGIN and STD_END are replaced by blanks and I get "namespace std{}" at the end of the files instead. Looks like the line and col for these items are wrong ... I would like to know if someone has already successfully preprocessed the stl delivered with Visual C++ 2005. Thank you in advance for your reply Ludovic Aubert

2 5

Filesystem Exception
by Surya Kiran Gullapalli 07 Jun '07

07 Jun '07

Hello all, I'm creating a directory using boost::filesystem::create_directory function. When i looked at the documentation, It said, Throws: basic_filesystem_error<Path> if Effects fails for any reason other than because the directory already exists. Now when i catch the exception like this try { boost::filesystem::create_directory (path) } catch (boost::filesystem::basic_filesystem_error <boost::filesystem::path>& e) { cout << e.what() << endl ; } e.what() returns the string boost::filesystem::create_directory. What i expect is why the create_directory failed. How can i get the string describing the problem. Thanks in advance, Surya

2 1

Re: [Boost-users] port of GameDev SDL lib in Boost?
by Christian Henning 07 Jun '07

07 Jun '07

My current version is more or less ready to use. you can check it here: http://gil-contributions.googlecode.com/svn/trunk/gil_2/boost/gil/extension… Let me know what you think. I'm not so sure if you can put your callback timer under the boost license. Maybe somebody else knows the answer. Christian On 6/6/07, fanzhe cui <fanzhe.cui(a)goldiom.com> wrote: > Christian, > > Boost is very widely accepted and utilized by game developers, and on the > web GameDev.net there are many many articles about various boost sub lib. > But I haven't seen many discussions about SDL lib on this boost mail list > from boost users/developers. SDL is very convenient cross-platform C++ > development platform that can be used not only game developers but also by > other developers. It has easy-to-use classes of multithreads, mutex, event > queues, timer callbacks, semaphores, key board input handling, audio, video, > to name a few. Most of these functionalities are available from Boost lib. > But I haven't seen good timer callback available from Boost lib (anybody can > correct me if I am not so informed of Boost timer). > > I tried to extract the timer functions (classes) from the SDL lib into an > individual timer lib, and the work is still in progress. I am not sure other > users in the list are interested in knowing about porting SDL timer to > Boost. So if you can tell me your email of this email list, I can send you > the project file. > > What exactly I did was that I included the relevant source files from SDL > package, and compile it with testing program. I was able to get the exe file > but the project also generated a library file in addition to the exe file. I > am confused by the fact that the project generating TimerTest.lib, that I > don't want t. Rather, I wanted to link them with TimerTest not intended to. > I checked the project configuration file, and there is no setting that will > generate a library file. I think it might be set in the program source code, > but I did not find it. > > I am interested in your idea of implement SDL wrapper in boost lib. Thank > you! > > Best regards, > Fanzhe Cui > +++++++++++++++++++++++++++ > Goldiom Systems LLC > - Information and Communication Technology Provider > Email: fanzhe.cui(a)goldiom.com > Tel: 973-210-4254 > www.goldiom.com > > > -----Original Message----- > From: boost-users-bounces(a)lists.boost.org > [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Christian Henning > Sent: Wednesday, June 06, 2007 10:06 AM > To: boost-users(a)lists.boost.org > Subject: Re: [Boost-users] port of GameDev SDL lib in Boost? > > Fanzhe, I have been working on a sdl wrapper for boost::gil. It lets > you draw on a canvas and react to event such as a timer event. I was > thinking of outsourcing this portion so people can use just that. The > good thing is the sdl is supporting almost the same platforms as boost > does. The bad thing probably is the license sdl is using, LGPL. > > If you want I can give you a pointer for the code. > > Christian > > On 6/6/07, fanzhe cui <fanzhe.cui(a)goldiom.com> wrote: > > Yes, I was referring to that library and more info could be found from the > > web: http://www.libsdl.org/. > > The problem with the boost timer that you mentioned is that it provides > the > > time elapsed, but not the interface like provided by SDL lib. Particularly > > the kind of timer callback function that is available in SDL lib is not > > available in Boost lit. > > > > Best regards, > > Fanzhe Cui > > > > ++++++++++++++++++++++ > > Goldiom Systems LLC > > - Information and Communication Technology Provider > > Email: fanzhe.cui(a)goldiom.com > > Tel: 973-210-4254 > > www.goldiom.com > > > > -----Original Message----- > > From: boost-users-bounces(a)lists.boost.org > > [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Tarjei Knapstad > > Sent: Wednesday, June 06, 2007 4:02 AM > > To: boost-users(a)lists.boost.org > > Subject: Re: [Boost-users] port of GameDev SDL lib in Boost? > > > > On 6/6/07, fanzhe cui <fanzhe.cui(a)goldiom.com> wrote: > > > I have been using both Boost lib and GameDev SDL lib in same projects. > > Both > > > of the lib have very good platform independency. But they have some > > > functionalities overlapping each other and I would like to use only one > of > > > them. The timer lib in GameDev SDL is very easy to use and I hope such > lib > > > or functionally similar one exists in Boost lib. I had a look at boost > > > archive on previous discussion on implementing Boost timers and feel > that > > > there is still no good implementation of timer in Boost lib (correct me > if > > I > > > am wrong). Anybody in this email list had a look at GameDev timer and > have > > > considered implementing such a lib in Boost? > > > > > > > Are you referring to the Simple Direct Medialayer? > > > > http://lazyfoo.net/SDL_tutorials/lesson12/index.php > > > > What's wrong with/missing in boost::timer ? > > > > http://boost.org/libs/timer/index.html > > > > -- > > Tarjei > > _______________________________________________ > > Boost-users mailing list > > Boost-users(a)lists.boost.org > > http://lists.boost.org/mailman/listinfo.cgi/boost-users > > > > > > > > _______________________________________________ > > Boost-users mailing list > > Boost-users(a)lists.boost.org > > http://lists.boost.org/mailman/listinfo.cgi/boost-users > > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users > > > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users >

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Re: [Boost-users] port of GameDev SDL lib in Boost?
by Christian Henning 07 Jun '07

07 Jun '07

Fanzhe, I have been working on a sdl wrapper for boost::gil. It lets you draw on a canvas and react to event such as a timer event. I was thinking of outsourcing this portion so people can use just that. The good thing is the sdl is supporting almost the same platforms as boost does. The bad thing probably is the license sdl is using, LGPL. If you want I can give you a pointer for the code. Christian On 6/6/07, fanzhe cui <fanzhe.cui(a)goldiom.com> wrote: > Yes, I was referring to that library and more info could be found from the > web: http://www.libsdl.org/. > The problem with the boost timer that you mentioned is that it provides the > time elapsed, but not the interface like provided by SDL lib. Particularly > the kind of timer callback function that is available in SDL lib is not > available in Boost lit. > > Best regards, > Fanzhe Cui > > ++++++++++++++++++++++ > Goldiom Systems LLC > - Information and Communication Technology Provider > Email: fanzhe.cui(a)goldiom.com > Tel: 973-210-4254 > www.goldiom.com > > -----Original Message----- > From: boost-users-bounces(a)lists.boost.org > [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Tarjei Knapstad > Sent: Wednesday, June 06, 2007 4:02 AM > To: boost-users(a)lists.boost.org > Subject: Re: [Boost-users] port of GameDev SDL lib in Boost? > > On 6/6/07, fanzhe cui <fanzhe.cui(a)goldiom.com> wrote: > > I have been using both Boost lib and GameDev SDL lib in same projects. > Both > > of the lib have very good platform independency. But they have some > > functionalities overlapping each other and I would like to use only one of > > them. The timer lib in GameDev SDL is very easy to use and I hope such lib > > or functionally similar one exists in Boost lib. I had a look at boost > > archive on previous discussion on implementing Boost timers and feel that > > there is still no good implementation of timer in Boost lib (correct me if > I > > am wrong). Anybody in this email list had a look at GameDev timer and have > > considered implementing such a lib in Boost? > > > > Are you referring to the Simple Direct Medialayer? > > http://lazyfoo.net/SDL_tutorials/lesson12/index.php > > What's wrong with/missing in boost::timer ? > > http://boost.org/libs/timer/index.html > > -- > Tarjei > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users > > > > _______________________________________________ > Boost-users mailing list > Boost-users(a)lists.boost.org > http://lists.boost.org/mailman/listinfo.cgi/boost-users >

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Uninitialized value p$m_value
by Paul 07 Jun '07

07 Jun '07

Hi, I'm trying to learn how to use the Boost Graph Library. Here is a very simple code example. #include <boost/graph/adjacency_list.hpp> #include <string> int main( void ) { using namespace std; using namespace boost; typedef adjacency_list< listS, vecS, directedS, // Vertex properties property< vertex_name_t, std::string >, // Edge properties property< edge_weight_t, int > > Graph; Graph graph; // Graph traits used to access graph's iterator types graph_traits< Graph >::vertex_descriptor a, b; a = add_vertex( graph ); b = add_vertex( graph ); graph_traits< Graph >::edge_descriptor ed; bool inserted; tie( ed, inserted ) = add_edge( a, b, graph ); // LINE 26 return 0; } When I compile this with g++ v4, I get on my Debian Etch system the warning for line 26: /usr/include/boost/graph/detail/adjacency_list.hpp:263: warning: 'p$m_value' is used uninitialized in this function Line 263 in adjacency_list.hpp looks as follows: inline stored_edge_property(Vertex target, const Property& p = Property()) : stored_edge<Vertex>(target), m_property(new Property(p)) { } What am I doing wrong and how can I fix that? Thank you. Regards, Paul

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[filesystem] remove for directories
by Ovanes Markarian 07 Jun '07

07 Jun '07

Hello all! Is there any way to remove a directory using boost::filesystem? remove and remove_all throw an exception. Remove docs reference a POSIX remove(). There is written: [quote] If path does not name a directory, remove(path) shall be equivalent to unlink(path). If path names a directory, remove(path) shall be equivalent to rmdir(path). [/quote] Unfortunately remove does not behave so (on WinXP and Visual C++ 8). One more issue: the link to the POSIX remove() doc points to link() and not remove. With Kind Regards, Ovanes

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Signal not disconnecting?
by Christian Mol 07 Jun '07

07 Jun '07

Hi, I'm using the signal library in my application. However if I call disconnect() on my connection object the connection is not removed. Is this default behaviour? I would like not having this behaviour because the signal is connected to a member function within an object that is actually deleted. Any ideas? Regards, Christian

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BGL compile error
by gast128 07 Jun '07

07 Jun '07

Dear all, We want to (DLL) export a boost graph. Probably on (DLL) exporting, the compiler tries to generate code for every member function. However on VC++7.1 it gives then a problem with operator[]. This can be easily verified with the following case: void Foo() { boost::adjacency_list<> graph; graph[0]; } We use here Boost 1.33.0. Anyone an idea? Wkr, me

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