How we can layout subviews in a view?

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Explain application life cycle or application states?

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Who calls dealloc method? Can we implement dealloc in arc?

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What is an extension?

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What is posing in objective c?

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Can we have multiple uiwindows in ios?

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Explain the difference between #import and #include in objective-c?

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What is the difference between #import and #include in objective-c?

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Can a static library (.a) contain resources like images, sound files etc?

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What is the difference between underscore and self (i.e self.xx and _xx) ?

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When might you use a cfarray/dictionary instead of a nsarray/dictionary?

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What is a process and thread?

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What are blocks and how are they used?

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Can I write some c++ function in same .m file? Will it compile? If no, what changes should I do to compile it?

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What are the adavantages of gcd over nsthread?

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