This table describes the changes to NSOperation Class Reference.
| Date | Notes |
|---|---|
| 2009-04-20 | Updated for Mac OS X v10.6. |
| 2008-11-19 | Updated the guidelines related to KVO compliance. |
| 2008-10-15 | Clarified cancellation semantics for concurrent operations. |
| 2007-04-30 | New document describing methods for managing encapsulated tasks. |
Last updated: 2009-04-20
