Identity of interfaces (or not)

[BCS]

Reply to Robert,

> BCS wrote:
> 
>> why not make
>> Ia == Ib
>> into
>> cast(Object)Ia == cast(Object)Ib
>> ?
> I like, but will this work for COM?
> 

All that would be required is to define casting a non D Com object to Object 
as something rational and consistent (but only in the special cases of this 
test). I think this should be easy to do as all it would require, as a result 
of both how COM and D interfaces work, is using an unchecked cast to object.