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Re: wasting space?

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Re: wasting space?

Subject: Re: wasting space?
From: Rob Keniger <email@hidden>
Date: Tue, 7 Oct 2008 13:07:20 +1000


On 07/10/2008, at 7:26 AM, Erik Buck wrote:

You really don't need to override - observeValueForKeyPath:ofObject:change:context:. Or at least I haven't needed to override it because one of the existing NSController subclasses usually meets my needs.

If you are implementing manual bindings then you really have to implement this method. For example, how would you tell a custom view to call -setNeedsDisplayInRect: when a value changes unless you are getting notifications of observed properties through - observeValueForKeyPath:ofObject:change:context:?

In my opinion the use of this method is absolutely essential in any reasonably complex use of bindings/KVO.

--
Rob Keniger

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  >Re: wasting space? (From: Erik Buck <email@hidden>)




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