What is background state in ios?
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Can viewdidload be called multiple times?
Explain the difference between viewdidload and viewdidappear?
What is a fault?
What is iphone?
What is the difference between viewdidload and viewwillappear?
What is the extension of ios files?
How is the app delegate is declared by Xcode project templates?
Is appdelegate a singleton?
Why do you generally create a weak reference when using self in a block?
What is ios layer?
Explain usage of struct?
What is urlsession?