[C++-sig] Re: Possible bug with HeldType?

[Prabhu Ramachandran]

>>>>> "DA" == David Abrahams <dave at boost-consulting.com> writes:

    >> Anyway, from your response I understand that for classes with
    >> virtual functions I need the add_wrapper function to use
    >> std::auto_ptr<A_Wrapper> and not std::auto_ptr<A>.

    DA> No, you can write

    DA>     implicitly_convertible<
    DA>         std::auto_ptr<A_Wrapper>, std::auto_ptr<A>
    >> ();

Neat.

    >> This is a bit of a pain with Pyste since if Nicodemus changes
    >> the name of the wrapper class I'd have to change the pyste
    >> files.  Its easy to get things working now since I know how the
    >> wrapper classes are named.  Is there an alternative way to do
    >> this that insulates the user from future changes to the wrapper
    >> name?

    DA> Not that I know of; I guess Nicodemus ought to do this
    DA> implicitly_convertible trick himself.

    DA> Hmm, Boost.Python could detect that case and do it for you.

That would be great.  If not, I'll try and add the
implicitly_convertible trick to my 'holder' patch.

Thanks!

cheers,
prabhu