What is meant by delegate in ios?
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Explain retain counts
What is dispatch queue in ios?
Explain xctest test case code.
What is called before viewdidload?
What is the difference between viewdidload and viewwillappear?
Mention what is the use of po command in xcode?
Difference between categories and extensions?
What is core data in ios?
What happens if the methods doesn’t exist?
Explain what is struct?
What does 2x resolution mean?
What is the difference between atomic and non-atomic properties? Which is the default for synthesized properties? When would you use one over the other?