What is thread in ios swift?
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Explain the difference between NSOperationQueue concurrent and non-concurrent in iOS operating system?
Give example scenarios when an application goes into inactive state?
Explain the difference between inheritance and category?
Which api would you use to write test scripts to exercise the application’s ui elements?
What is xib?
What is the difference between viewdidload and viewdidappear?
What is difference between synchronous and asynchronous in web request in iOS operating system?
Explain difference between mrc and arc?
Explain UIView life cycles
Tell me the hierarchy of uibutton.
What are the sorts of ios binaries you can make utilizing xcode?
What happens when we invoke a method on a nil pointer?