- Boost-users - lists.boost.org

NumPy integration with Boost.Python
by Tanja Zaric 21 Oct '09

21 Oct '09

Hello, I am new to Boost. Python. I am trying to find out how and maybe to integrate C++/Boost Python with Numpy? I have tried to find any documentation and tutorials about it on boost.org and elsewhere, but it is scarse. Can someone give any answer? Thanks __________ Information from ESET NOD32 Antivirus, version of virus signature database 4528 (20091021) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com

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issues appending strings
by Sean Farrow 21 Oct '09

21 Oct '09

Hi: I have a std::wstring defined like so: std::wstring OutputString; I then use the following code to try to append to it: OutputString.append(boost::gregorian::to_iso_extended_string(d)); I receive the following errors: d:\work\access for everyone\ghg\tpproductszw\tpproductszw.cpp(63) : error C2664: 'std::basic_string<_Elem,_Traits,_Ax> &std::basic_string<_Elem,_Traits,_Ax>::append(const std::basic_string<_Elem,_Traits,_Ax> &)' : cannot convert parameter 1 from 'std::string' to 'const std::basic_string<_Elem,_Traits,_Ax> &' with [ _Elem=wchar_t, _Traits=std::char_traits, _Ax=std::allocator ] Reason: cannot convert from 'std::string' to 'const std::basic_string<_Elem,_Traits,_Ax>' with [ _Elem=wchar_t, _Traits=std::char_traits, _Ax=std::allocator ] No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called Using visual c++ 2008 on a windows xp sp3 box. What's happening here, and more importantly what am I doing wrong/or not doing as the case may be? Cheers Sean.

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[Boost.Asio] Is there a way to find out first address of first NIC in the local host using Asio?
by Javier Estrada 21 Oct '09

21 Oct '09

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[boost.datetime] outputting to a widestring
by Sean Farrow 21 Oct '09

21 Oct '09

Hi: Is thee a version of the toiso_extended_string for wide character output? I have the following line: std::wstring test =boost::to_iso_extended_wstring(d); wich I assumed would work and fails. Any ideas? Cheers Sean.

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date time format
by Sean Farrow 21 Oct '09

21 Oct '09

Hi: Within a string I have a date in the format: 22 July 2009 How can I input this in to the boost::datetime library as I need to transform it in to another format. As far as I can tell, the constructor of boost::gregorian::date doesn't takethis format as one of it's string parameters. Cheers Sean.

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Re: [Boost-users] [pool] Singleton implementation
by Paul Byrne 21 Oct '09

21 Oct '09

> > Message: 8 > Date: Tue, 20 Oct 2009 06:43:40 -0800 > From: "Robert Ramey" <ramey(a)rrsd.com> > To: boost-users(a)lists.boost.org > Subject: Re: [Boost-users] [pool] Singleton implementation > Message-ID: <hbkeik$jah$1(a)ger.gmane.org> > > You might want to look at the singleton which is part of the serialization > library. > > Robert Ramey > Thanks Robert, Ray et al for the useful pointers.

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Boost.Python: wrapping OpenSceneGraph smart pointers, again
by Randolph Fritz 20 Oct '09

20 Oct '09

What is wrong with the following code? I suspect I'm doing something silly, and I suspect the answer is obvious. #include <osg/Node> #include <osg/ref_ptr> #include <boost/python.hpp> #include <boost/python/pointee.hpp> using namespace osg; typedef ref_ptr<Node> NodePtr; using namespace boost::python; BOOST_PYTHON_MODULE(NodePtr) { class_<NodePtr, pointee<NodePtr> >("NodePtr") ; } -- Randolph Fritz design machine group, architecture department, university of washington rfritz(a)u.washington.edu -or- rfritz333(a)gmail.com

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error setting up boost on visual c++ 6.0
by pedro chaparro 20 Oct '09

20 Oct '09

hi, i wanna use boost libraries over visual c++, i have followed all steps in the getting start guide for windows, but even so i get error, what could be the cause? thanks Compiling... example.cpp c:\documents and settings\juan antonio\escritorio\boost_1_40_0\boost_1_40_0\boost\aligned_storage.hpp(65) : error C2989: 'aligned_storage_imp<0,alignment_>' : template class has already been defined as a non-template class c:\documents and settings\juan antonio\escritorio\boost_1_40_0\boost_1_40_0\boost\aligned_storage.hpp(65) : error C2988: unrecognizable template declaration/definition c:\documents and settings\juan antonio\escritorio\boost_1_40_0\boost_1_40_0\boost\type_traits\floating_point_promotion.hpp(78) : fatal error C1506: unrecoverable block scoping error Error executing cl.exe. example.obj - 3 error(s), 0 warning(s) -- Ing Pedro Alonso Chaparro Valero Ciudad Politecnica de la Innovación iTEAM - Mobile Communications Group Polytechnic University of Valencia C\ Camino de Vera S/N, Edificio 8G 46022 Valencia, Spain

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[pool] Singleton implementation
by Paul Byrne 20 Oct '09

20 Oct '09

Hi all, I am interested to find a sound C++ implementation of a Singleton, and have attempted to find one within the Boost libraries. It seems that "pool/detail/singleton.hpp" would fit the bill for me, but (as I understand it) this class/header is not intended for direct use by library users. Have I overlooked a good alternative within the Boost suite? Thanks, Paul

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building boost with python script
by Michał Nowotka 20 Oct '09

20 Oct '09

Hello I want to build boost library with python scrpt(s) (maybe SCons shuld be used). Or maybe someone has already done so - I don't want to reinvent the wheel. -- Regards Michał Nowotka

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