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a few questions about boost:any
by Shishir Ramam 01 Aug '05

01 Aug '05

Hello fellow boosters! I am looking to use boost:any. While gaining an understanding of how to use it, it strikes me that the real purpose it serves is that the virtual table functionality is exposed to the user. It seems that efficiency of table lookup are then the application responsibility. My first question - Is this a reasonable understanding? I have been looking to see if tag dispatching can somehow circumvent the cost of table lookup that would be necessary, and the only thing that strikes me is to - store a type id within the type boost::any represents, - retrieve this id and either use it in an if/else structure, or a function pointer lookup in an array. A complete tag dispatch implementation seems impossible, since the type id within the boost::any structure is a run time quantity. My second question - Are there better ways to do it than an index into an array of functions? TIA. -shishir -- It is not because things are difficult that we do not dare, it is because we do not dare that things are difficult. - Seneca

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boost python + vc 7.1
by Uwe Schmitt 01 Aug '05

01 Aug '05

Hi, I have a problem with compiling an application using boost python. I use Microsofts VC++ version 7.1. The following lines describe my problem: cl /EHsc /TP /IC:\Python24\include /ID:\home\Administrator\svn_local\public.procoders.net\pcsvm /IC:\boost\include\boost-1_32 /c pythonAdapter.cpp /FopythonAdapter.obj pythonAdapter.cpp C:\Boost\include\boost-1_32\boost\python\operators.hpp(209) : fatal error C1001: INTERNER COMPILERFEHLER (Compilerdatei 'msc1.cpp', Zeile 2701) Whlen Sie im Men '?' von Visual C++ den Befehl 'Software Service', oder ffnen Sie die Hilfedatei fr den Software Service, um weitere Informationen zu erhalten Any hints what to do ? Greetings, Uwe

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Include boost in software distribution?
by Joseph Turian 01 Aug '05

01 Aug '05

Hi, I'm packaging some software for distribution, and the software depends upon the 'program_options' library. I don't want to assume that the user has boost installed, or ever jam. So I was wondering about the potential for automagically building and using the 'program_options' library if it is not already present on the user's system. I would include the source files in libs/program_options/, and write a small Makefile for it. I would also include all the Boost headers. Is this sufficient, even though it wouldn't run the Boost configure script to determine system-specific settings? Can you see any problems in building this library without doing a full Boost install? Thanks! Joseph -- http://www.cs.nyu.edu/~turian/

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Problem using boost::bind and ecore_ipc from Enlightenment
by Offlein 31 Jul '05

31 Jul '05

Hi all, i just subscribed to this List ;) I have a Problem with C++ Member Functions and Pointers to this Member Functions so that they fit into a Function with take a normal Function. I guess i'm a Newbie, otherwise i should have already solved it, i think. ;) I want to use IPC Stuff from Ecore. But before you can make use of ecore_ipc you must initialize it, as far as i can see. I atached 4 Files, where i build a little Scenario: 1. Example.cpp // The Main Program 2. Testclass.hpp 3. Testclass.cpp 4. Makefile // Perhaps you must adjust some of the Variables I commented the important Points in the Code again. So i must first call ecore_ipc_init() // Testclass Line 68 and must supply 3 Functions to ecore for handling Events 1. A Function that is called, when a new IPC Server is added 2. A Function that is called, when a IPC Server is deleted 3. A Function that is called, when some Message is sent Namely: ecore_event_handler_add( ECORE_IPC_EVENT_SERVER_ADD, ipc_server_add, NULL ); ecore_event_handler_add( ECORE_IPC_EVENT_SERVER_DEL, ipc_server_del, NULL ); ecore_event_handler_add( ECORE_IPC_EVENT_SERVER_DATA, ipc_server_data, NULL ); "ipc_server_add", "ipc_server_del" and "ipc_server_data" are the functions that are available outside the Class Testclass The Example Program as it is compiles and i can start it, the ecore_pic_init() succeds the 3 Functions get "registered" but this 3 submitted Functions are standing outside my Testclass, but my Target is to have they inside my Testclass. That's my Problem, i didn't get the Clue to give these MemberFunctions to these 3 Functions: ecore_event_handler_add( ECORE_IPC_EVENT_SERVER_ADD, ipc_server_add, NULL ); ecore_event_handler_add( ECORE_IPC_EVENT_SERVER_DEL, ipc_server_del, NULL ); ecore_event_handler_add( ECORE_IPC_EVENT_SERVER_DATA, ipc_server_data, NULL ); I tried Things like that, but that didn't helped me: ecore_event_handler_add( ECORE_IPC_EVENT_SERVER_DEL, boost::bind( boost::type<int>(), &Testclass::ipc_server_add ), NULL ); ecore_event_handler_add( ECORE_IPC_EVENT_SERVER_DEL, boost::bind( boost::type<int>(), &Testclass::ipc_server_add, _1, _2, _3 ), NULL ); So i want to ask to the Mailinglist in Hope somebody knows how to do this Task in the right Way. ;) Thanks for your help and Greets to all, Christian

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cvs bjam fails to build for vc7
by Serge Skorokhodov 31 Jul '05

31 Jul '05

Hi, The version of bjam from cvs fails to build for vc7 due to the file 'execunix.c: file unistd.h not found'. It is now: ... #if defined(sun) || defined(__sun) #include <wait.h> #endif ... but it used to be: ... #if defined(sun) || defined(__sun) #include <unistd.h> /* need to include unistd.h on sun for the vfork prototype*/ #include <wait.h> #endif ... TIA -- Serge

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Re: [Boost-users] boost::shared_ptr vs. NULL
by Merrill Cornish 31 Jul '05

31 Jul '05

Thore, >>> To set it to 0, use reset(): Thanks. That's what I need. Merrill

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anyone can help me about using regex++
by huatao 31 Jul '05

31 Jul '05

I'm developing a windows application using regex++3.0 to solve regulare expression, but i don't know how to add unicode support to it, anyone can give me some advice about it, thanks a lot.

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boost::shared_ptr vs. NULL
by Merrill Cornish 31 Jul '05

31 Jul '05

I'm running Boost 1.32.0 under MinGW, so NULL is 0 rather than (void*)0. While I understand what smart pointers are all about, this is the first time I've tried converting code with conventional pointers to use smart pointers. My original application had class data members such as Node *mParent; which were initialized to NULL in the class constructor initialization lists. Later, the data members were assigned pointers to real Node objects. In particular, the application needs at various times to detect whether the data member is NULL or a "real" node and to occassionally set real nodes to NULL. OK, now I'm trying to convert to shared_ptrs. So, I have a typedef for notation convenience: typedef boost::shared_ptr<Node> NodePtr; The class data member declaration now looks like NodePtr mParent; but, how do I initialize it to NULL? In the smart pointer world *is* there such a thing as a generic NULL that can be assigned to all smart pointers. Or, will I need something like NodePrt NullNodePtr; // never initialized then assign mParent = NullNodePtr; This would mean that I would been a NullXPtr for every smart pointer type X I have. If that's the way it must be, then OK, but I would like to know how things are supposed to be done. Merrill

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Compilation errors in Boost.Mpl with Microsoft Compiler ver.13.10.2240.8 for IA-64
by Sergey Serokurov 30 Jul '05

30 Jul '05

HI All, I am getting compilation errors using Microsoft (R) C/C++ Optimizing Compiler Version 13.10.2240.8 for IA-64 The compiler is shipped with Windows DDK (WINDDK\3790\bin\ia64). The same code compiles perfectly well with 32 bit Microsoft compiler (13.10.2179.0) The Boost version is 1.32.0 Is it a known issue with the compiler? Is there a workaround? Content of the StdAfx.h file which is being compiled as a the pre-compiled header is: #include <boost/multi_index_container.hpp> #include <boost/multi_index/member.hpp> #include <boost/multi_index/ordered_index.hpp> #include <boost/multi_index/mem_fun.hpp> #include <boost/multi_index/composite_key.hpp> #include <boost/shared_ptr.hpp> #include <boost/intrusive_ptr.hpp> #include <boost/functional.hpp> #include <boost/variant.hpp> #include <boost/ref.hpp> The following is the compiler output: P'nmake.exe /c BUILDMSG=Stop. -i NTTEST= UMTEST= NOLINK=1 NOPASS0=1 IA64=1' cl -nologo -Iia64\ -I. -IC:\WINDDK\3790\inc\mfc42 -IC:\WINDDK\3790\inc\atl30 -I\include -IC:\WINDDK\3790\inc\ddk\wnet IC:\WINDDK\3790\inc\crt C:\WINDDK\3790 \inc\wnet\crt\stl60 -D_WIN64 -D_IA64_=1 -DIA64=1 -DNO_HW_DETECT -D_MSC_EXTENSIONS -DCONDITION_HANDLING=1 -DNT_INST=0 -DWIN32=100 -D_NT1X_=100 -DWINNT=1 -D_WIN32_WINNT=0x0502 /DWINVER=0x0502 -D_WIN32_IE=0x0600 -D_MERCED_A0_=1 -DDEVL=1 -D__BUILDMACHINE__=WinDDK -DFPO=0 -DNDEBUG -D_DLL=1 -D_MT=1 -DUNICODE -D_UNICODE -DNOATLNAMESPACE /D_ATL_DLL /c /Zel /Zp8 /Gy /Gi- /W3 /Wp64 /GX /GR /Zi /Od /d2QIA64_fr32 /FdC:\main\SWSvc\objfre_wnet_IA64\ia64\ - FIC:\WINDDK\3790\inc\wnet\warning.h /YlSWSvc /Ycstdafx.h /Fpobjfre_wnet_IA64\ia64\stdafx.pch /Fo"C:\objfre_wnet_IA64\ia64\_stdafx.obj" /Tp #include "stdafx.h" pch_hdr.src \boost-1_32\boost\mpl\if.hpp(63) : error C2226: syntax error : unexpected type 'value' \boost-1_32\boost\mpl\if.hpp(73) : see reference to class template instantiation 'boost::mpl::if_<T1,T2,T3>' being compiled \boost-1_32\boost\mpl\if.hpp(63) : error C2144: syntax error : 'value' should be preceded by '(' \boost-1_32\boost\mpl\if.hpp(67) : error C2976: 'boost::mpl::if_c' : too few template arguments \boost-1_32\boost\mpl\if.hpp(37) : see declaration of 'boost::mpl::if_c' \boost-1_32\boost\mpl\aux_\preprocessed\plain\less.hpp(21) : error C2143: syntax error : missing ')' before '>' \boost-1_32\boost\mpl\aux_\preprocessed\plain\less.hpp(28) : see reference to class template instantiation 'boost::mpl::less_impl<Tag1,Tag2>' being compiled \boost-1_32\boost\mpl\aux_\preprocessed\plain\less.hpp(21) : error C2059: syntax error : '>' \boost-1_32\boost\mpl\aux_\preprocessed\plain\less.hpp(26) : error C2947: expecting '>' to terminate template-argument-list, found '>' \boost-1_32\boost\mpl\aux_\preprocessed\plain\less.hpp(26) : error C2976: 'boost::mpl::if_c' : too few template arguments \boost-1_32\boost\mpl\if.hpp(37) : see declaration of 'boost::mpl::if_c' \boost-1_32\boost\mpl\aux_\preprocessed\plain\less.hpp(87) : error C2143: syntax error : missing ')' before '>' \boost-1_32\boost\mpl\aux_\preprocessed\plain\less.hpp(89) : see reference to class template instantiation 'boost::mpl::less_impl<Tag1,Tag2>::apply<N1,N2>' being compiled with [ Tag1=boost::mpl::integral_c_tag, Tag2=boost::mpl::integral_c_tag ] \boost-1_32\boost\mpl\aux_\preprocessed\plain\less.hpp(87) : error C2059: syntax error : '>' \boost-1_32\boost\mpl\aux_\preprocessed\plain\less.hpp(88) : error C2143: syntax error : missing ';' before '{' \boost-1_32\boost\mpl\aux_\preprocessed\plain\less.hpp(89) : error C2143: syntax error : missing ';' before '}' \boost-1_32\boost\mpl\aux_\preprocessed\plain\less.hpp(89) : fatal error C1004: unexpected end of file found Thank you, Sergey Serokurov

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Re: [Boost-users] MultiIndex Hashed indicies
by JOAQUIN LOPEZ MU?Z 29 Jul '05

29 Jul '05

Hi Sohail, Hashed indices will be available in 1.33 (due to be released in a matter of days). boost-consulting.com/boost shows the documentation as in the current CVS, so what you're seeing is really a preview of the release to come. The official docs are at boost.org. Regards, Joaquín M López Muñoz Telefónica, Investigación y Desarrollo Is this a new feature (http://boost-consulting.com/boost/libs/multi_index/doc/reference/index. html)? I don't seem to have it in my 1.3.2 installation. Thanks Sohail _______________________________________________ Boost-users mailing list Boost-users(a)lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

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