Explain usage of struct?
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Why do you generally create a weak reference when using self in a block?
Explain xib?
Explain stack and heap?
Assume that an app is not in foreground but is still executing code. In which state will it be in?
When dealing with property declarations, what is the difference between atomic and non-atomic?
What NSAutorelease pool
Name the app sate which it reaches briefly on its way to being suspended in iOS operating system?
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How many types of background modes supported in ios?
Explain about AFNetworking. What is the base class used in AFNetworking library
What are the different delete rules that a relationship can have? Which one takes ownership?
Explain alamofire benefits
What is the ? In swift?