If my instance is observing some property of another object, am I supposed to call removeObserver:forKeyPath: in dealloc?
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If my instance is observing some property of another object, am I supposed to call removeObserver:forKeyPath: in dealloc?
Yes
…unless there is a more appropriate time earlier in execution.
Observers are held as nonretained references. Failing to un-register can result in your deallocated instance being messaged.