What is gcd? What are its advantages over nsthread?
What is objective point of view?
Is struct a class?
How does dispatch_once manages to run only once?
What is the difference between objective c and c++?
How to call methods in objective c?
What is dot notation?
Is swift objective c?
What is the use of category in objective-c?
Explain what is protocol in objective-c?
Is swift faster than objective c?
How to create thread in objective c?
What is difference between mutable and immutable?
What is an example of category?
Is objective c the same as c sharp?