rtti cast
BCS
ao at pathlink.com
Thu May 8 09:49:28 PDT 2008
Reply to terranium,
> BCS Wrote:
>
>> Thinking about it, I can't recall ever casting to a derived type
>> where a failed cast was an indication of a bug.
>>
> You can't, others can.
Ok, some some people use then one way, I use them another. That doesn't prove
that they your proposal is better (or worse) than the current way.
> When a function receives unexpected input it's
> a bug.
>
That's irrelevant. What I'm saying is that in every case I know of where
I have used such a cast, the cast failing was /not/ unexpected. It was mealy
a legitimate and /expected/ "no" answer to the question "is a's type B?"
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