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Re: Manual KVO and will/didChangeValueForKey

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Re: Manual KVO and will/didChangeValueForKey

Subject: Re: Manual KVO and will/didChangeValueForKey
From: mmalcolm crawford <email@hidden>
Date: Wed, 1 Jun 2005 23:16:43 -0700


On Jun 1, 2005, at 10:47 PM, Andrew White wrote:

The NSKeyValueObservingProtocol specifies that a NSKeyValueChangeKindKey of NSKeyValueChangeSetting indicates

"that willChangeValueForKey:/didChangeValueForKey: has otherwise been invoked".

Is it possible to tell which of the two was invoked? Does it make any difference for the implementer of observeValueForKeyPath:ofObject:change:context: ?

You only receive one invocation of observeValueForKeyPath:... for each willChangeValueForKey:/didChangeValueForKey pair.

mmalc

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  >Manual KVO and will/didChangeValueForKey (From: Andrew White <email@hidden>)




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