Re: App hangs when displaying any sheet in 10.5 [SOLVED]
Re: App hangs when displaying any sheet in 10.5 [SOLVED]
- Subject: Re: App hangs when displaying any sheet in 10.5 [SOLVED]
- From: "Hamish Allan" <email@hidden>
- Date: Fri, 6 Jun 2008 06:37:32 +0100
On Fri, Jun 6, 2008 at 6:26 AM, Graham Cox <email@hidden> wrote:
> I guess the question is, given an object type 'id', which method signature
> will the compiler go with? Does the return type affect the method signature?
> (In C++ it doesn't for example), so two methods:
>
> - (CGPoint) position;
> - (float) position;
>
> might well have identical signatures. The compiler doesn't have an object
> type to narrow it down, so which will it use - the first it finds maybe.
I'd have thought that in the case:
// id anonymous
float f = [anonymous position];
the compiler ought to assume that the method being used is the one
returning a float, or if not at least warn about an implicit cast from
CGPoint to float. Perhaps if it were -(int)position rather than
-(CGPoint)position, you might not expect a warning, but in that case
you would expect a cast, so it shouldn't break.
However, that does appear to be what is happening. In the absence of
any other explanation, I'd call it a compiler bug.
Hamish
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