Document Revision History
This table describes the changes to Concurrency Programming Guide.
Corrected explanation of dispatch queues.
Removed obsolete information about autorelease pool usage with operations.
Updated the code for manually executing operations to handle cancellation correctly.
Added information about using Objective-C objects in conjunction with dispatch queues.
Updated to reflect support for iOS.
Corrected the start method for the nonconcurrent operation object example.
New document that describes technologies for executing multiple code paths in a concurrent manner.