By Ben Smith

This e-book stocks the secrets and techniques of the best iPhone apps being equipped at the present time via the simplest iPhone developers—invaluable wisdom for somebody who desires to create the app that everybody is conversing about.
What you’ll learn
-Game improvement with harmony and iPhone OpenGL
-Unit checking out and iPhone-specific trying out tools
-How to strategy and clear up advanced app improvement roadblocks
-The top code absolutely defined and awarded with screenshots

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Extra info for More iPhone Cool Projects (Books for Professionals by Professionals)

Sample text

Blocks can be explicitly declared using a syntax similar to C function pointers but use a caret instead of an asterisk. Unlike C function pointers which use the * operator to mark the beginning of a C function pointer blocks use the caret ^ operator to start the declaration of a block variable or a block literal. For example, the declaration of a block named cubeIt that will return the cube of a number would be written as shown in the following illustrations. caret operator indicates start of the block variable cubeIt int (^cubeIt)(int); the block returns an int cubeIt takes an int as a parameter The block literal definition can be defined and assigned to the block variable.

What is the optimal number of threads to spawn? It would be easy to see that you could end up in a situation where the application spawns enough threads to bring your application to a grinding halt. But wait, isn’t there a solution for that? Concurrency with Operation Objects Need work done on a background thread? Think operation objects! Why use operation objects? There are some very good reasons to use operation objects. Operation objects are a high-level abstraction for threading which reduces the complexity and level of difficulty in developing a multithreaded application.

The main method implementation contains the minimum that a main method must do: within an @try—@catch—@finally block you create an autorelease pool, use the isCancelled method to see if the operation has been cancelled, and since the @finally block is always executed release the autorelease pool in the @finally block. h" @implementation HelloOperationQueuesViewController @synthesize operationCountOutput, operationOutput; Change the viewDidLoad: method to allocate and initialize the operation queue workQueue.

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