Does ios have garbage collection?
What are the app states in ios?
Who calls the dealloc strategy? Would we be able to implement dealloc in arc? In the event that indeed, what is the need to do that?
What is difference between weak and strong in ios?
Is appdelegate a singleton?
What is the current iphone ios?
Explain the difference between nil and nil?
what are the source items used by Xcode?
What is meaning of 'synthesize' keyword ?
What is difference between performblock: and performblockandwait:?
What is grand central dispatch ios?
How to parse json? Explain
What is urlsession?
What is queue in ios?
what are fetched properties?