The app delegate object is created by UIApplicationMain function at app launch time. The app delegate object's main job is to handle state transitions within the app.
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Object Oriented programming is a programming style that is associated with the concept of Class, Objects and various other concepts revolvi...
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Providing Counts for the Picker View – numberOfComponentsInPickerView: – pickerView:numberOfRowsInComponent: Delegate - Setting the Dim...
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NSURLConnection is deprecated in OS X 10.11 and iOS 9.0 Advantage: NSURLSession also provides support for background downloads, ...