+ Returns a boolean indicating whether deallocation notification + has been turned on. +
++ If deallocation notification is turned on, whenever an objects + retain count reaches zero (and it would normally be deallocated) + the _dealloc methiod is called and the object is only + deallocated if that method returns YES. +
++ Turns on (or off) deallocation notification. +
++ If deallocation notification is turned on, whenever an objects + retain count reaches zero (and it would normally be deallocated) + the _dealloc methiod is called and the object is only + deallocated if that method returns YES. +
++ Returns a boolean indicating whether the receiver should be + deallocated or not. The default implementation returns YES. +
++ This method is called when an objects retain count reaches + zero (if deallocation notifications are active). +
++ This method is provided so that you can take some sort of + action when objects are deallocated ... normally you would + override this method in your classes, but you could also + override it in a category of NSObject - and perform some + action whenever any object is deallocated. +
+