[C++-sig] C++ object pointers contained in a vector

[Roman Yakovenko]

On 10/18/06, Noah Schwartz <noah.schwartz1 at gmail.com> wrote:
> On Wednesday 18 October 2006 16:09, Roman Yakovenko wrote:
> > On 10/18/06, Noah Schwartz <noah.schwartz1 at gmail.com> wrote:
> > > Hi,
> > >
> > > I've used the vector_indexing_suite to expose vectors containing pointers
> > > to some class. I see that I can't iterate over this vector in Python like
> > > I can with say, a vector of floats. I get the following error:
> > > TypeError: No to_python (by-value) converter found for C++ type: MyClass*
> > >
> > > MyClass is already exposed properly. I can even use a MyClass* fine in
> > > Python when other C++ functions return a pointer to one.
> > >
> > > I am guessing that I need to define a to_python converter either in
> > > MyClass or in a new class, MyClass*. Not really sure how that works
> > > though.
> >
> > Try to set NoProxy to true
> >
> > http://boost.org/libs/python/doc/v2/indexing.html#indexing_suite
> >
> > Does it help?
>
> So, something like this?
> class_<std::vector<MyClass *> >("VectorMyClassP")
>                 .def(vector_indexing_suite<std::vector<MyClass *>, true >())
>                 ;
>
> Same problem...

:-(, for some reason I thought this would work:
Take a look on this post:
http://aspn.activestate.com/ASPN/Mail/Message/cpp-sig/2261029

I am not sure about indexing suite v2, because you can change call policies:
return_internal_reference.

You can find documentation for indexing suite v2 here:
http://tinyurl.com/yndgbw

-- 
Roman Yakovenko
C++ Python language binding
http://www.language-binding.net/