When an app is said to be in active state?
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Is the object retained if I call performSelector:withObject:afterDelay:?
Difference between release and autorelease ?
What is a weak var?
How you can add frameworks in xcode project?
Introduction to iphone application development?
What is delegation pattern in ios?
What is dispatch queue in ios?
What does exc_bad_access mean?
Explain about NSURL Connection Delegates
Explain commonly used third party libraries
Which language is best for ios development?
What is arc?