[C++-sig] Re: make_constructor issues

[David Abrahams]

Stefan Seefeld <seefeld at sympatico.ca> writes:

> David Abrahams wrote:
>
>>>But copy-construct it must anyways, simply because I chose to export
>>>the type as class_<Foo>, not class_<Foo, shared_ptr<Foo> > !?!
>> No; there's no copy construction.
>
> My understanding of 'class_<Foo>' is that a python type is generated
> with an embedded 'Foo' in it. 

That's just the  _default_ structure of a Python Foo object generated
by ordinary __init__ functions.  The ones generated by
make_constructor __init__ functions hold the [smart] pointer.

> If I have a function returning a Foo (value, pointer, reference,
> whatever), which can act as a constructor for a python object
> holding a Foo, how can I construct my python instance without either
> copy construction or assignment ?

> Thanks for any clarifications,
> 		Stefan

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