Create a timer on 2nd thread using Grand Central Dispatch GCD

(Update 06-24-11) Last night I found “More iPhone 3 development” (by Dave mark and Jeff Lamarche) chapter 14 deveoted full chapter to multithread including timer. (Original) As of iOS 4, Apple made blocks and Grand Central Dispatch (GCD) available. Previously it was available on Mac. Some pre-requisite or recommend readings WWDC 2010 video session 206: […]