VoidNoble IT Zone

http://stackoverflow.com/a/9860283Nonatomicnonatomic은 다중 threading 목적들에 사용된다. If we have set the nonatomic attribute at the time of declaration, then any other thread wanting access to that object can access it and give results in respect to multi-threading.Copycopy는 object가 가변적일때 사용된다. Use this if you need the value of the object as it is at this moment, and you don't want that value to reflect..