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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What is class extension? Why do we require them?

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When to use nsautoreleasepool??

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