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Re: KVO and the observeValueForKeyPath bottleneck
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Re: KVO and the observeValueForKeyPath bottleneck


  • Subject: Re: KVO and the observeValueForKeyPath bottleneck
  • From: Jakob Olesen <email@hidden>
  • Date: Mon, 17 Jul 2006 16:57:37 +0200


On 17/07/2006, at 16.38, Matt Neuburg wrote:

On or about 7/17/06 3:38 AM, thus spake "Jakob Olesen" <email@hidden>:

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)
object change:(NSDictionary *)change context:(void *)context
{
     if ([self respondsToSelector:(SEL)context])
         [self performSelector:(SEL)context withObject:change];
}

By an incredible coincidence, yesterday (before this reponse arrived at my
desk), after considering all the responses I'd gotten, I decided upon an
approach and implemented it in my app, and it was word for word, letter for
letter identical with this. m.

Cool, then I can get the SCO lawyers to help me sue you :-)

Seriously, is there any reason for checking respondsToSelector? Wouldn't it be better to get an exception (or crash) if you mistype the selector or somebody else registers you as an observer?


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