Document Revision History
This table describes the changes to NSOperation Class Reference.
| Date | Notes |
|---|---|
| 2012-01-09 | Updated the information about completion blocks to reflect that they should not be used to queue additional work related to your operation object's task. |
| 2009-04-20 | Updated for 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. |
© 2012 Apple Inc. All Rights Reserved. (Last updated: 2012-01-09)