ARC is a compiler-level feature that simplifies the process of managing the lifetimes of Objective-C objects. Instead of you having to remember when to retain or release an object, ARC evaluates the lifetime requirements of your objects and automatically inserts the appropriate method calls at compile time.
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With Storyboards, all screens are stored in a single file. This gives you a conceptual overview of the visual representation for the app an...
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Objective C Step 1) //Add below code in AppDelegate.h @property (retain, nonatomic) UIWindow *window; @property (nonatomic,retain) UI...
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The Application Kit is a framework containing all the objects you need to implement your graphical, event-driven user interface: windows, p...