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Alex Rivera
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Important: Not all classes are KVO-compliant for all properties. You can ensure your own classes are KVO-compliant by following the steps described in “KVO Compliance.” Typically properties in Apple-supplied frameworks are only KVO-compliant if they are documented as such. This statement leaves me confused. Can't we use KVO for UIKit objects at all? I don't remember seeing any property being documented as KVO compliant. Despite saying otherwise, I am able to use KVO with many properties. Does this mean that I can't rely on it? Any insight into this would be appreciated.
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