[C++-sig] Re: Making copy of function derived from C++ pure virtual function

[David Abrahams]

Paul F. Kunz wrote:
>    I have a function written in Python derived from C++.   Now I want
> to clone this function in C++.   What should I do in the copy
> constructor of the function wrapper?   I have...

Way too much detail missing for me to say anything useful.

Start by defining your terms (or used established terminology):

What does it mean to have a "function written in Python derived from
C++?"  What does it mean to clone a function?

> FunctionWrap::
> FunctionWrap ( const FunctionWrap & wrap )
>   : FunctionBase ( wrap ),
>     m_self ( wrap.m_self )
> {
> // what should be here to create a new PyObject that is copy of old one?

What old one?

> }
> 
> FunctionBase *
> FunctionWrap::
> clone () const
> {
>   return new FunctionWrap ( *this );
> }


-- 
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com