Identity of interfaces (or not)
Christopher Wright
dhasenan at gmail.com
Tue Dec 2 15:31:09 PST 2008
BCS wrote:
> Reply to Tomas,
>
>> The problem is that B has two vtables that implement the interface I.
>> However, in A.addChild, i.parent get's the first one (introduced by
>> A), and in main, it gets the second one (J , which derived from I).
>> The identity check then fails because the pointers aren't the same,
>> even though it's the same object in question.
>
> why not make
> Ia == Ib
> into
> cast(Object)Ia == cast(Object)Ib
> ?
That makes sense, and I fully support it. I tend to use interfaces
rather often, and anything to improve support for them is good.
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