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Chapters included in this edition that were not contained in the previous edition are as follows:
* [[The Basics of Modern Objective-C(iPad)]]* [[An Introduction to iPad Auto Layout in iOS 6]]* [[Working with iPad iOS 6 Auto Layout Constraints in Interface Builder]]
* [[An iPad iOS 6 Auto Layout Example]]
* [[Implementing iPad iOS 6 Auto Layout Constraints in Code]]* [[Implementing iPad Cross-Hierarchy Auto Layout Constraints in iOS 6]]* [[Understanding the iPad iOS 6 Auto Layout Visual Format Language]]* [[An Overview of iPad iOS 6 Collection View and Flow Layout]]
* [[An iPad iOS 6 Storyboard-based Collection View Tutorial]]
* [[Subclassing and Extending the iPad iOS 6 Collection View Flow Layout]]* [[An Overview of iPad iOS 6 Application State Preservation and Restoration]]
* [[An iOS 6 iPad State Preservation and Restoration Tutorial]]
* [[Integrating Maps into iPad iOS 6 Applications using MKMapItem]]
* [[An Example iOS 6 iPad MKMapItem Application]]
* [[Using iOS 6 Event Kit to Create iPad Date and Location Based Reminders]]
* [[Integrating Twitter and Facebook into iPad iOS 6 Applications]]
* [[An iPad iOS 6 Facebook Integration Tutorial using UIActivityViewController]]
* [[iPad iOS 6 Facebook and Twitter Integration using SLRequest]]
* [[Making Store Purchases with the SKStoreProductViewController Class(iPad)]]
* [[Building In-App Purchasing into iPad iOS 6 Applications]]
* [[Preparing an iPad iOS 6 Application for In-App Purchases]]
* [[An iPad iOS 6 In-App Purchase Tutorial]]
* [[Configuring and Creating App Store Hosted Content for iPad iOS 6 In-App Purchases]]
In addition, the chapter entitled [[Using Xcode Storyboarding with iOS 6(iPad)]] has been updated to include coverage of the new segue unwinding feature of iOS 6 and [[An Overview of iPad iOS 6 Table Views and Xcode Storyboards]] has been modified to introduce the new iOS 6 model for reusing Table View cells.
Finally, all the code examples have been updated to reflect the changes to Objective-C including the removal of the viewDidUnload: method, literal syntax for number, array and dictionaries and default property synthesis.