Re: Using performSelector: on super
Re: Using performSelector: on super
- Subject: Re: Using performSelector: on super
- From: Charles Steinman <email@hidden>
- Date: Tue, 5 Aug 2008 16:20:58 -0700 (PDT)
--- On Tue, 8/5/08, James Bucanek <email@hidden> wrote:
> In your original code, you had
>
> SEL closeSelector = @selector(close);
> if ([SuperSocket
> instancesRespondToSelector:closeSelector]) {
> ...
>
> This does not, as I think you believe, test to see if an
> object
> of the class SuperSocket responds to the -close message. In
>
> fact, it tests to see if the class object for SuperSocket
> responds to the +close message.
That isn't correct. The +instancesRespondToSelector: method tells whether *instances* of a class respond to a selector. To test whether the class object responds to a given selector, you'd use [SuperSocket respondsToSelector:].
Cheers,
Chuck
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