[C++-sig] intrusive pointer comparison in python

[David Abrahams]

"Gross, Ashley" <agross at irobot.com> writes:

> I’ve got a problem when comparing intrusive pointers in python.
> I’ve got a class wrapped in python that does not support the
> equality operator.  In C++ intrusive pointers support equality
> comparisons by comparing the pointers that they hold.  However in
> python, this does not appear to work.  For example:
>
> intrusive_ptr1=foo()
>
> intrusive_ptr2=intrusive_ptr1
>
> intrusive_ptr1==intrusive_ptr2
>
> This gives me false.  The only comparison that seems to work is comparing an object to itself:
>
> intrusive_ptr1==intrusive_ptr1

Both of your examples compare an object to itself.  In the first
example the names intrusive_ptr1 and intrusive_ptr2 are bound to the
same object.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com