What is iphone architecture?
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What is reference count in ios?
What is use of nsoperation? How nsoperationque works?
Difference between cocoa, cocoa touch and objective c?
What is grand central dispatch ios?
Explain retain counts in iOS operating system?
What is the difference between atomic and nonatomic properties?
What is the difference strong and weak reference?
what is the difference between bounds and frame?
What is @dynamic and any place where it is used?
What is dynamic typing in iOS operating system?
What is the mean of not running state in ios?
What compilers apple using ?