What is protocol in simple words?
What is the difference between class and category?
What is data encapsulation in objective-c?
How to add object to nsarray objective c?
What is the principle distinction between the function calls and messages?
What is abstract class in objective c?
What are blocks and how are they used?
Is c++ objective c?
What is an m file?
Can objective c run on windows?
What happens when you create a block?
What is retain count?
Is nsobject a parent class or a derived class?
Can you retain delegates?
What does r mean in xcode?