Is the object retained if I call performSelector:withObject:afterDelay:?
How to set your application id after becoming a member of iphone developer program?
Which are the app’s state transitions when it is launched?
Why we use delegate in ios?
What is difference between performblock: and performblockandwait:?
Explain interfaces?
What is meaning of 'retain' keyword?
Explain the working of manual memory management?
What is a memory leak?
What is the full meaning of ios?
What is mvc in ios?
Is uikit thread safe?
What is difference strong and weak reference ? Explain.