What happens when you invoke a method on a nil pointer?


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Explain the options and bars available in xcode 4.x workspace window in iOS operating system

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Explain xib?

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What is retain in ios?

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How will you implement sets and the intersection operation? Complexity?

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Explain what is ios?

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In mapKit frame work, how to get current user location

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What is messaging? What is message forwarding?

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What is the biggest change with ios 7?

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What is message forwarding?

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What is sandbox in iOS operating system?

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What is the difference between android and ios?

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