On Sep 8, 2009, at 3:25 PM, Brent Gulanowski wrote:
For selectors, you can check whether NSSelectorFromString(@"selector")
returns a selector.
That won't do what you want. NSSelectorFromString() always returns a
selector; it creates one itself if that name has not been used yet.
(And "not used yet" differs from "does not exist" anyway; the runtime
manipulates selectors as lazily as it can.)
Try these instead:
[NSClassFromString(@"SomeClass") respondsToSelector:@selector
(someClassMethod)];
[NSClassFromString(@"SomeClass")
instancesRespondToSelector:@selector(someInstanceMethod)];
--
Greg Parker gpar...@apple.com Runtime Wrangler
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