What is difference between nsstring and nsmutablestring?
What is assign property in objective c?
What is toll-free bridging?
What are the size classes?
Is objective c still used?
What are objective c properties?
Does copy increase retain count?
Explain what is #import?
What is autoclosure?
What does the gc () method?
How big is a atom?
Why we use synthesize in objective c?
What is the main difference between function calls and messages?
What is nonatomic in objective c?
What is the difference between nsdictionary and nsmutabledictionary?