Does objective c have multiple inheritance? Why not? How to imitate various inheritance?

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Is objective c difficult?

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What happens if you add your just created object to a mutable array, and you release your object?

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What happens when you create a block?

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What's the difference between a thread safe and a thread unsafe function?

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What is nsstring?

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Does objective c have garbage collection?

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Tell me about important protocol being used in objective c?

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What are the delegate?

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Mention which class can you use for parsing of xml in iphone?

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When should you call dealloc method?

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Is objective c hard?

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Is objective c better than swift?

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How to use swift protocol in objective c?

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How do I create an objective c class in xcode?

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