On May 3, 2012, at 6:45 AM, Roland King wrote:

> It's not, no. If you want a KVO way of removing all the objects use the 
> remove<key>AtIndexes: or just set<Key>: with an empty array. You'll get 
> different types of KVO message (NSKeyValueChangeRemoval vs 
> NSKeyValueChangeSetting).

Thanks! I was indeed using remove<key>AtIndexes: , but set<Key> seems a bit 
easier to do.

- Koen.
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