Mailman 3 June 2004 - Cplusplus-sig

multiple to_python converters ?
by Philippe Fremy June 14, 2004

June 14, 2004

Hi, I have the case where I have two python modules, both declaring the same to_python converter. The modules may be used separately or together. The problem is that if used together, I get (you see me coming I guess) a RunTimeError. Only one to_python converter may be registerted at a time for a given type. I looked in the archives and on google. I saw two references to discussions of this problem and even a possible solution to be included in boost. But checking the documentation today, I could not find any hint on how to solve this problem. So, is the problem still here ? regards, Philippe -- An open source OS for contactless Smart Cards http://www.jayacard.org - Jayacard

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by yolanda June 14, 2004

June 14, 2004

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software
by amber＠processed.users.sf.meat.com June 13, 2004

June 13, 2004

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software
by tbm＠esperanto.org June 11, 2004

June 11, 2004

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RE: [C++-sig] warning: "_POSIX_C_SOURCE" redefined
by Pere Mato Vila June 11, 2004

June 11, 2004

Linux Redhad 7.3 with gcc 3.2 > -----Original Message----- > From: c++-sig-bounces(a)python.org > [mailto:c++-sig-bounces@python.org] On Behalf Of Ralf W. > Grosse-Kunstleve > Sent: 09 June 2004 21:10 > To: Development of Python/C++ integration > Subject: RE: [C++-sig] warning: "_POSIX_C_SOURCE" redefined > > > --- Pere Mato Vila <Pere.Mato(a)cern.ch> wrote: > > My test program to show the problem contains only one line: > > > > #include "boost/python.hpp" > > > > and therefore I can not move it before anything. > > Hm. What is your platform? Linux (which), Cygwin? > > > > > -----Original Message----- > > > From: c++-sig-bounces(a)python.org > > > [mailto:c++-sig-bounces@python.org] On Behalf Of Ralf W. > > > Grosse-Kunstleve > > > Sent: 08 June 2004 12:26 > > > To: Development of Python/C++ integration > > > Subject: Re: [C++-sig] warning: "_POSIX_C_SOURCE" redefined > > > > > > > > > --- Pere Mato Vila <Pere.Mato(a)cern.ch> wrote: > > > > I am having the following compilation warnings when including > > > > "boost/python.hpp". I am using Boost 1.31.0 Python 2.3.3 > > > and gcc 3.2. > > > > Is anything I am doing wrong? > > > > > > Due to a Python requirement the boost/python.hpp header has > > > to be included before any system header. Please move the > > > python.hpp include to the very top of your file. Let us know > > > if it doesn't help. Ralf > > > > > > > > > > > > > > > > > > __________________________________ > > > Do you Yahoo!? > > > Friends. Fun. Try the all-new Yahoo! Messenger. > > > http://messenger.yahoo.com/ > > > > > > _______________________________________________ > > > C++-sig mailing list > > > C++-sig(a)python.org > > > http://mail.python.org/mailman/listinfo/c++-sig > > > > > > > _______________________________________________ > > C++-sig mailing list > > C++-sig(a)python.org > > http://mail.python.org/mailman/listinfo/c++-sig > > > > > > __________________________________ > Do you Yahoo!? > Friends. Fun. Try the all-new Yahoo! Messenger. > http://messenger.yahoo.com/ > > _______________________________________________ > C++-sig mailing list > C++-sig(a)python.org > http://mail.python.org/mailman/listinfo/c++-sig >

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[PATCH] unused variables.
by Giulio Eulisse June 11, 2004

June 11, 2004

Could someone please patch boost/boost.python as follows? Those unused variables generate a lot of warnings when full warning report is used. Thanks. Ciao, Giulio Index: boost/python/class.hpp =================================================================== RCS file: /cvsroot/boost/boost/boost/python/class.hpp,v retrieving revision 1.83.2.2 diff -u -r1.83.2.2 class.hpp --- boost/python/class.hpp 7 Jan 2004 14:08:10 -0000 1.83.2.2 +++ boost/python/class.hpp 25 May 2004 13:35:12 -0000 @@ -556,7 +556,7 @@ template <class Fn, class Helper> inline void def_default( char const* name - , Fn fn + , Fn /*fn*/ , Helper const& helper , mpl::bool_<true>) { Index: boost/python/detail/caller.hpp =================================================================== RCS file: /cvsroot/boost/boost/boost/python/detail/caller.hpp,v retrieving revision 1.21.2.1 diff -u -r1.21.2.1 caller.hpp --- boost/python/detail/caller.hpp 6 Jan 2004 13:08:25 -0000 1.21.2.1 +++ boost/python/detail/caller.hpp 25 May 2004 13:35:12 -0000 @@ -82,7 +82,7 @@ template <class ArgPackage, class ResultConverter> inline ResultConverter create_result_converter( - ArgPackage const& args_ + ArgPackage const& /*args_*/ , ResultConverter* , ... )

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Re: [C++-sig] Re: call_f(Derived) did not match C++ signature
by Shin-ichi MORITA June 10, 2004

June 10, 2004

Sorry, I sent incomplete message. > Writing this, I've just found the cause. > I exposed Base in foo.cc: class_<Base, BaseWrap, boost::noncopyable>("Base", no_init); and defined Derived in test_foo.py: class Derived(Base): def __init__(self): pass # because I exposed with no_init. def f(self): return 42 This is wrong. Next I removed "no_init" and "__init__" above like this: class_<Base, BaseWrap, boost::noncopyable>("Base"); class Derived(Base): # Base.__init__ will be called. def f(self): return 42 Finally I got *passed*. Base.__init__ must be called to initialize Derived instance correctly, is this right? If so, I think that "no_init" is not for abstract base class, but just for only noncreatable class. Why dose this page in the tutorial uses "no_init" to explain abstract base class? http://boost.org/libs/python/doc/tutorial/doc/class_virtual_functions.html Thanks. __________________________________________________ Do You Yahoo!? http://bb.yahoo.co.jp/

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call_f(Derived) did not match C++ signature
by Shin-ichi MORITA June 10, 2004

June 10, 2004

Hi, this is my first post. I've just started learning Boost.Python. I want to expose C++ abstract class and function that receives its instance like this example in the tutorial: http://boost.org/libs/python/doc/tutorial/doc/class_virtual_functions.html But I have a problem ... I compiled this example as module foo and ran test_foo.py attached to this mail. Then I had following errors: ====== BEGIN OUTPUT ====== ***************************************************************** Failure in example: foo.call_f(a) from line #9 of test_foo Exception raised: Traceback (most recent call last): File "/home/shin/.local/lib/python2.3/doctest.py", line 442, in _run_examples_inner compileflags, 1) in globs File "<string>", line 1, in ? ArgumentError: Python argument types in foo.call_f(Derived) did not match C++ signature: call_f(Base {lvalue}) ***************************************************************** 1 items had failures: 1 of 4 in test_foo ***Test Failed*** 1 failures. EXIT STATUS: 1 ====== END OUTPUT ====== What's wrong? Thanks. __________________________________________________ Do You Yahoo!? http://bb.yahoo.co.jp/

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Compilation options
by Olivier Ravard June 10, 2004

June 10, 2004

Hi, I compiled some modules with boost.build and mingw tool. How can I do to tell bjam to compile with the -O3 option ? Thanks. O.R.

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importing embedded dynamic lib
by Vio June 10, 2004

June 10, 2004

> > >It will not work. Python doesn't load ELF, it only loads Python code. >It's the *operating system* which is loading the ELF. > I *finally* got it. (with convincing args from python sources) >-- Grafik - Don't Assume Anything > But then that's why we're called newbies, as long as we don't understand how the world turns, we assume Elvis still lives. Thanks for your help! Vio

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