What is atomic and nonatomic in iOS operating system? What is run loop in iOS ?
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What is messaging? What is message forwarding?
Is the object retained if I call performSelector:withObject:afterDelay:?
What is the meaning of 'weak' keyword?
What is block in ios objective c?
Assume that system is running low on memory. What can system do for suspended apps?
What is encapsulation in ios?
Explain how you can migrate to Xcode?
Explain "private", "protected" and "public"?
Explain what is struct?
Why is iboutlet weak?
Explain what is iphone reference library?
Screen resolution of iPhone & iPad