What is concurrency in ios?
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How to register as a iphone developer?
What is the difference between stack and heap?
Explain how an autorelease pool works at the runtime level
What is the full meaning of ios?
Whats the difference between NSArray and NSMutableArray?
What is application lifecycle in ios?
What is difference between core data and sqlite in ios?
What widgets can not do ?
What is sandbox in iOS operating system?
What is block in ios swift?
Explain the difference between nil and nil?
What is nsoperation and nsoperationqueue?