What is use of uiapplication class?
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What is appdelegate in xcode?
Can you please explain the difference between nsarray and nsmutablearray?
What is a thread in ios?
What is the benefit of setting reuseidentifier to a non-nil value?
Explain place holder constraint
What is ios technology?
Does objective-c contain private methods?
What is cocoa touch in ios?
What are layer objects?
What is synchronous web request and asynchronous ?
What is sandbox in iOS operating system?
Is there any garbage collector concept available in iOS?