Thanks for the great trick!
Andre Masse
On Dec 19, 2008, at 12:35, Ken Thomases wrote:
On Dec 19, 2008, at 11:06 AM, Andre Masse wrote:
Let's say I have a class (called it Client) that has 25 fields and
need to be notified when any of these is modified. Do I have to do -
observeValueForKeyPath for each of the 25 fields?
You can add one "fake" property, use
+keyPathsForValuesAffecting<Key> to tell KVO that all of your other
keys affect the value of this one property, and then observe that
one key.
On Tiger, you'd have to use
+setKeys:triggerChangeNotificationsForDependentKey: to tell KVO
about the dependencies.
Cheers,
Ken
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