- Boost-users - lists.boost.org

RE: [Boost-users] tupl::get bag
by Ben Hutchings 11 Sep '03

11 Sep '03

nagual <nagual(a)promsoft.ru> wrote: > I write example code for tuples::tuple::get use tuples::tie. > If compile icl (Intel C++) v 7.1 or bcc32 (Borland) v 5.6.4 all ok, > but if compile g++ (GCC) v 3.2.2 or cl (MSVC) v 13.00.9466 - > i have eror. > ;-c > I need to use it in MSVC. > Help me! <snip> Older compilers performed only minimal parsing of templates before they were instantiated, but the standard says they must do more parsing. This requires that you tell them which dependent names (names of things that depend on a template parameter) are being used as type or template names. You need to put the keyword "template" in front of "get<num>" so that the compiler can parse it correctly. Ben.

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2D Shared Array
by Kevin J. Menard, Jr. 11 Sep '03

11 Sep '03

Hi, Is it possible to build a shared_array of shared_arrays? I would imagine there must be away, but I haven't been so successful at my attempts to find it :-/ I'm working on converting an existing project over to the boost smart pointer library. We've been using dynamically allocated 2D arrays to hold points in a matrix, and would like to take advantage of the automatic clean-up that the boost smart pointers can provide. That's why I would like to make a shared_array of shared_arrays of some data type. Any help would be appreciated. And if I'm approaching this all wrong, please let me know. I'm open to suggestions for other ideas, so long as the individual points can still be referenced in the form of: point[row][col]. Thanks, Kevin

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RE: [Boost-users] regex traits for multibyte strings
by Ben Hutchings 11 Sep '03

11 Sep '03

John Maddock <john(a)johnmaddock.co.uk> wrote: > > Is it possible to define a traits class for regex that supports > > multibyte strings? I am intending to do so, but I'm unsure that it > > is possible because there are several required functions that take a > > parameter of type char_type, which wouldn't really hold a complete > > character. > > I suspect that the answer is "no", can you not use wchar_t, and if > necessary convert your multi-byte sequence to wchar_t "atoms" on- > the-fly using iterator adapters? I'll give it a try.

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Boost.Threads, gcc and HP-UX
by Raul Huertas Diaz 11 Sep '03

11 Sep '03

I've noticed that in boost/config/platform/hpux.hpp this lines: #ifdef __GNUC__ // GNU C on HP-UX does not support threads (checked up to gcc 3.3) # define BOOST_DISABLE_THREADS #endif have been added in version 1.30.x. Please, ¿can someone explain me why? I have commented out the #define BOOST_DISABLE_THREADS and it works in gcc 3.2 with HP-UX 11.00. We do not use Jam to build the library, but I think that that doesn't matter. gcc --version: gcc (GCC) 3.2 Copyright (C) 2002 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. uname -a: HP-UX habana B.11.00 A 9000/778 2004658305 two-user license Thanks in advance, -- Raúl Huertas Díaz

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tuple many type
by nagual 11 Sep '03

11 Sep '03

Hello, All! tuple declared with 10 types in template parametrs: template < class T0 = null_type, class T1 = null_type, class T2 = null_type, class T3 = null_type, class T4 = null_type, class T5 = null_type, class T6 = null_type, class T7 = null_type, class T8 = null_type, class T9 = null_type> class tuple; make_tuple & tie declared with maximum 10 arguments. I want to use theirs more 10 arguments. How can i do it? With best regards, nagual. E-mail: nagual(a)promsoft.ru

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tupl::get bag
by nagual 11 Sep '03

11 Sep '03

Hello, All! I write example code for tuples::tuple::get use tuples::tie. If compile icl (Intel C++) v 7.1 or bcc32 (Borland) v 5.6.4 all ok, but if compile g++ (GCC) v 3.2.2 or cl (MSVC) v 13.00.9466 - i have eror. ;-c I need to use it in MSVC. Help me! ========tie.cpp======== #include <iostream> #include <boost/tuple/tuple.hpp> using std::cout; using std::endl; template <int num, typename T> void print(T t) { int i1 = 0, i2 = 0, i3 = 0; char c1 = '\0', c2 = '\0', c3 = '\0'; using boost::tuples::tie; tie(i1, i2, i3, c1, c2, c3).get<num>() = t; //Error in g++ & cl cout<<tie(i1, i2, i3, c1, c2, c3).get<num>()<<endl; //Error in g++ & cl } int main() { print<0>(0); print<1>(1); print<2>(2); print<3>('a'); print<4>('b'); print<5>('c'); return 0; } ========tie.cpp======== ========g++ command line====== c:\g++ -Iboost -otie tie.cpp ========g++ command line====== ========g++ output====== tie.cpp: In function `void print(T)': tie.cpp:12: parse error before `)' token tie.cpp:13: parse error before `)' token ========g++ output====== ========cl command line====== c:\cl /EHsc tie.cpp ========cl command line====== ========cl output====== tie.cpp(12) : error C2039: 'get' : is not a member of 'boost::tuples::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>' with [ T1=boost::tuples::detail::assign_to_pointee<int>, T2=boost::tuples::detail::assign_to_pointee<int>, T3=boost::tuples::detail::assign_to_pointee<int>, T4=boost::tuples::detail::assign_to_pointee<char>, T5=boost::tuples::detail::assign_to_pointee<char>, T6=boost::tuples::detail::assign_to_pointee<char>, T7=boost::tuples::null_type, T8=boost::tuples::null_type, T9=boost::tuples::null_type, T10=boost::tuples::null_type ] tie.cpp(17) : see reference to function template instantiation 'void print<0,int>(T)' being compiled with [ T=int ] tie.cpp(12) : error C2059: syntax error : ')' tie.cpp(13) : error C2039: 'get' : is not a member of 'boost::tuples::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>' with [ T1=boost::tuples::detail::assign_to_pointee<int>, T2=boost::tuples::detail::assign_to_pointee<int>, T3=boost::tuples::detail::assign_to_pointee<int>, T4=boost::tuples::detail::assign_to_pointee<char>, T5=boost::tuples::detail::assign_to_pointee<char>, T6=boost::tuples::detail::assign_to_pointee<char>, T7=boost::tuples::null_type, T8=boost::tuples::null_type, T9=boost::tuples::null_type, T10=boost::tuples::null_type ] tie.cpp(13) : error C2059: syntax error : ')' tie.cpp(12) : error C2039: 'get' : is not a member of 'boost::tuples::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>' with [ T1=boost::tuples::detail::assign_to_pointee<int>, T2=boost::tuples::detail::assign_to_pointee<int>, T3=boost::tuples::detail::assign_to_pointee<int>, T4=boost::tuples::detail::assign_to_pointee<char>, T5=boost::tuples::detail::assign_to_pointee<char>, T6=boost::tuples::detail::assign_to_pointee<char>, T7=boost::tuples::null_type, T8=boost::tuples::null_type, T9=boost::tuples::null_type, T10=boost::tuples::null_type ] tie.cpp(18) : see reference to function template instantiation 'void print<1,int>(T)' being compiled with [ T=int ] tie.cpp(12) : error C2059: syntax error : ')' tie.cpp(13) : error C2039: 'get' : is not a member of 'boost::tuples::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>' with [ T1=boost::tuples::detail::assign_to_pointee<int>, T2=boost::tuples::detail::assign_to_pointee<int>, T3=boost::tuples::detail::assign_to_pointee<int>, T4=boost::tuples::detail::assign_to_pointee<char>, T5=boost::tuples::detail::assign_to_pointee<char>, T6=boost::tuples::detail::assign_to_pointee<char>, T7=boost::tuples::null_type, T8=boost::tuples::null_type, T9=boost::tuples::null_type, T10=boost::tuples::null_type ] tie.cpp(13) : error C2059: syntax error : ')' tie.cpp(12) : error C2039: 'get' : is not a member of 'boost::tuples::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>' with [ T1=boost::tuples::detail::assign_to_pointee<int>, T2=boost::tuples::detail::assign_to_pointee<int>, T3=boost::tuples::detail::assign_to_pointee<int>, T4=boost::tuples::detail::assign_to_pointee<char>, T5=boost::tuples::detail::assign_to_pointee<char>, T6=boost::tuples::detail::assign_to_pointee<char>, T7=boost::tuples::null_type, T8=boost::tuples::null_type, T9=boost::tuples::null_type, T10=boost::tuples::null_type ] tie.cpp(19) : see reference to function template instantiation 'void print<2,int>(T)' being compiled with [ T=int ] tie.cpp(12) : error C2059: syntax error : ')' tie.cpp(13) : error C2039: 'get' : is not a member of 'boost::tuples::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>' with [ T1=boost::tuples::detail::assign_to_pointee<int>, T2=boost::tuples::detail::assign_to_pointee<int>, T3=boost::tuples::detail::assign_to_pointee<int>, T4=boost::tuples::detail::assign_to_pointee<char>, T5=boost::tuples::detail::assign_to_pointee<char>, T6=boost::tuples::detail::assign_to_pointee<char>, T7=boost::tuples::null_type, T8=boost::tuples::null_type, T9=boost::tuples::null_type, T10=boost::tuples::null_type ] tie.cpp(13) : error C2059: syntax error : ')' tie.cpp(12) : error C2039: 'get' : is not a member of 'boost::tuples::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>' with [ T1=boost::tuples::detail::assign_to_pointee<int>, T2=boost::tuples::detail::assign_to_pointee<int>, T3=boost::tuples::detail::assign_to_pointee<int>, T4=boost::tuples::detail::assign_to_pointee<char>, T5=boost::tuples::detail::assign_to_pointee<char>, T6=boost::tuples::detail::assign_to_pointee<char>, T7=boost::tuples::null_type, T8=boost::tuples::null_type, T9=boost::tuples::null_type, T10=boost::tuples::null_type ] tie.cpp(20) : see reference to function template instantiation 'void print<3,char>(T)' being compiled with [ T=char ] tie.cpp(12) : error C2059: syntax error : ')' tie.cpp(13) : error C2039: 'get' : is not a member of 'boost::tuples::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>' with [ T1=boost::tuples::detail::assign_to_pointee<int>, T2=boost::tuples::detail::assign_to_pointee<int>, T3=boost::tuples::detail::assign_to_pointee<int>, T4=boost::tuples::detail::assign_to_pointee<char>, T5=boost::tuples::detail::assign_to_pointee<char>, T6=boost::tuples::detail::assign_to_pointee<char>, T7=boost::tuples::null_type, T8=boost::tuples::null_type, T9=boost::tuples::null_type, T10=boost::tuples::null_type ] tie.cpp(13) : error C2059: syntax error : ')' tie.cpp(12) : error C2039: 'get' : is not a member of 'boost::tuples::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>' with [ T1=boost::tuples::detail::assign_to_pointee<int>, T2=boost::tuples::detail::assign_to_pointee<int>, T3=boost::tuples::detail::assign_to_pointee<int>, T4=boost::tuples::detail::assign_to_pointee<char>, T5=boost::tuples::detail::assign_to_pointee<char>, T6=boost::tuples::detail::assign_to_pointee<char>, T7=boost::tuples::null_type, T8=boost::tuples::null_type, T9=boost::tuples::null_type, T10=boost::tuples::null_type ] tie.cpp(21) : see reference to function template instantiation 'void print<4,char>(T)' being compiled with [ T=char ] tie.cpp(12) : error C2059: syntax error : ')' tie.cpp(13) : error C2039: 'get' : is not a member of 'boost::tuples::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>' with [ T1=boost::tuples::detail::assign_to_pointee<int>, T2=boost::tuples::detail::assign_to_pointee<int>, T3=boost::tuples::detail::assign_to_pointee<int>, T4=boost::tuples::detail::assign_to_pointee<char>, T5=boost::tuples::detail::assign_to_pointee<char>, T6=boost::tuples::detail::assign_to_pointee<char>, T7=boost::tuples::null_type, T8=boost::tuples::null_type, T9=boost::tuples::null_type, T10=boost::tuples::null_type ] tie.cpp(13) : error C2059: syntax error : ')' tie.cpp(12) : error C2039: 'get' : is not a member of 'boost::tuples::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>' with [ T1=boost::tuples::detail::assign_to_pointee<int>, T2=boost::tuples::detail::assign_to_pointee<int>, T3=boost::tuples::detail::assign_to_pointee<int>, T4=boost::tuples::detail::assign_to_pointee<char>, T5=boost::tuples::detail::assign_to_pointee<char>, T6=boost::tuples::detail::assign_to_pointee<char>, T7=boost::tuples::null_type, T8=boost::tuples::null_type, T9=boost::tuples::null_type, T10=boost::tuples::null_type ] tie.cpp(22) : see reference to function template instantiation 'void print<5,char>(T)' being compiled with [ T=char ] tie.cpp(12) : error C2059: syntax error : ')' tie.cpp(13) : error C2039: 'get' : is not a member of 'boost::tuples::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>' with [ T1=boost::tuples::detail::assign_to_pointee<int>, T2=boost::tuples::detail::assign_to_pointee<int>, T3=boost::tuples::detail::assign_to_pointee<int>, T4=boost::tuples::detail::assign_to_pointee<char>, T5=boost::tuples::detail::assign_to_pointee<char>, T6=boost::tuples::detail::assign_to_pointee<char>, T7=boost::tuples::null_type, T8=boost::tuples::null_type, T9=boost::tuples::null_type, T10=boost::tuples::null_type ] tie.cpp(13) : error C2059: syntax error : ')' ========cl output====== With best regards, nagual. E-mail: nagual(a)promsoft.ru

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Test
by Douglas Gregor 10 Sep '03

10 Sep '03

please ignore

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boost::gregorian::from_string( std::string ) fails
by Andre du Toit 10 Sep '03

10 Sep '03

Hi. Calling boost::gregorian::from_string with string value = 2003-07-28 produces a range exception, i.e. year supposedly does not fall inside the range covered by boost::gregorian::date!!!! Any suggestions? Greetings, Andre.

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Probem compiling and vectors
by Pat OBrien 10 Sep '03

10 Sep '03

Hi, Here what I've done: (1) Create prjmgr.pyste looks like: prjmgr = AllFromHeader("project.h") (2) Ran the following command: python C:\boost-1.30.2\libs\python\pyste\src\pyste.py --module=prjmgr prjmgr.pyste (3) The output from the above conatins the following type of errors: In file included from C:interface/IPssProject.h:15, from C:/inc/PrjManager/project.h:21: C:inc/interfaceTier/dataobjects/IPrgStructureObj.h:20: 'vector' is used as a type, but is not defined as a type. In file included from C:inc/interfaceTier/interface/IPssProject.h:17, from C:inc/PrjManager/project.h:21: C:inc/interfaceTier/dataobjects/ICrossRefQuery.h:44: 'vector' is used as a type, but is not defined as a type. C:inc/interfaceTier/dataobjects/ICrossRefQuery.h:47: 'vector' is used as a type, but is not defined as a type. Does anyone have any Idea what I missing or doing wrong ? Thanks Pat --------------------------------- Want to chat instantly with your online friends? Get the FREE Yahoo!Messenger

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Boost.Python: is my code safe?
by Matthew Bray 10 Sep '03

10 Sep '03

I have a question regarding the use of Boost.Python. What I would like to do is to provide a simple scripting interface to an application in much the same way as Microsoft use Visual Basic within much of their product line (e.g. Excel) to provide direct access to the applications object model. My design is stunningly rendered below, +-------------------------+ | Application--+ | | | | Dynamically +---------------+ | v | Linked | Python Module | | +--->ObjectModel<------------------| | | | | +---------------+ | +---------------------+ | | | | Python Interpretter |<----------------------+ | | | | ">>> import ..." | +---------------------+ | +-------------------------+ What we have firstly is a our python module, in this case it exports a simple class 'ObjectModel' with various functions, sub objects and whatever else is required for the application to run. This is our Object Model, and is usable from the python interpretter on the command line. For what we have in mind however is for the python interpretter to be running inside the application (through use of the Py* functions from the python API and use of the relevant parts of Boost.Python - handle<>, object). What I want is for the application and the python instance to share the object model, for the interpretter to have knowledge of the ObjectModel it is simply imported from the python module. The application itself is linked against the python module in order to use ObjectModel (the relevant compiler specific code is inserted so that the ObjectModel class is exported/imported - __declspec(dllexport) and dllimport under Visual C++). With this setup, it is now possible to create an instance of ObjectModel within the python interpretter and use extract<ObjectModel*>(...) in order to get access to it within the application, no doubt it is also possible to create the ObjectModel within the application and pass it to the python interpretter to use it there. Now my question basically regards pitfalls in this approach, there are two instances of the Python Module in use here but I'm sure that as long as care is taken to ensure the ObjectModel is destructed on the same heap that it was created on then there shall be no problems. Is there any other, possibly better way to do this perhaps - e.g. without requiring the use of the module at all, simply passing the Boost.Python class descriptions directly to the embedded interpretter. A simple test harness I have /appears/ to work fine with the above design. Here's an extremely cut down bit of code that should show kind of what I'm working on if I'm being a little unclear: my_module.hpp - this is the class that is in the python module that we shall have access to within python and our application: struct PLATFORM_SPECIFIC_DLL_EXPORT_COMMAND ObjectModel { const char * name() const; }; my_application.cpp - assume all the correct headers are included, the module is linked against etc: int main(int argc,char ** argv) { Py_Initialize(); //initialize the environment handle<> main_module(borrowed(PyImport_AddModule("__main__"))); handle<> main_namespace( borrowed(PyModule_GetDict(main_module.get()))); //import our python module handle<>(PyRun_String("import my_module", Py_file_input, main_namespace.get(), main_namespace.get()) ); //create a new instance of ObjectModel within python handle<>(PyRun_String("model = my_module.ObjectModel()", Py_file_input, main_namespace.get(), main_namespace.get())); //get the instance of ObjectModel and use it within our application object tmp(main_namespace); ObjectModel * model = extract<ObjectModel *>(tmp["model"]); cout << model->name() << endl; Py_Finalize(); } Mat.

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