This table describes the changes to NSKeyValueObserving Protocol Reference.
| Date | Notes |
|---|---|
| 2009-11-13 | Updated optional status of protocol methods. |
| 2009-06-03 | Added NSKeyValueChangeNotificationIsPriorKey definition. |
| 2007-10-31 | Marked setKeys:triggerChangeNotificationsForDependentKey: as deprecated in Mac OS X v10.5 and later. |
| 2007-04-01 | Updated for Mac OS X v10.5. |
| 2006-05-23 | First publication of this content as a separate document. |
Last updated: 2009-11-13