What is notification in iOS?
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In which language ios is written?
Suppose I get a “blog returned invalid data” error message. What do I do?
Explain the difference between nil and nil?
Which framework delivers event to custom object when app is in foreground?
What is advantage of categories? What is difference between implementing a category and inheritance?
What is synchronized() block in objective c? What is the use of that?
Define fast enumeration?
What are layers?
What is iphone screen size?
Explain app bundle?
What is mvc design pattern in ios?
What manual memory management?