Re: Using performSelector: on super
Re: Using performSelector: on super
- Subject: Re: Using performSelector: on super
- From: James Bucanek <email@hidden>
- Date: Tue, 5 Aug 2008 16:36:22 -0700
Charles Steinman <mailto:email@hidden> wrote (Tuesday,
August 5, 2008 4:20 PM -0700):
--- 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:].
My bad, you're absolutely correct. I just misread it as respondsToSelector:.
--
James Bucanek
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