Can a protocol have properties?

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Is swift or objective c better?

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What does mean in xcode?

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Is closure a function?

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Is it possible to implement dealloc in arc?

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What can’t we put into an array or dictionary?

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What is delegation protocol?

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Can we implement dealloc in arc? If yes, what is the need to do that?

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Which language does apple use?

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Does a thread created using performselectorinbackground:withobject: creates its own autorelease pool?

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What is a process and thread?

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Is objective c type safe?

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How to declare global variable in objective c?

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How to declare variable in objective c?

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What are the important data types found in objective-c?

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