Is the object retained if I call performSelector:withObject:afterDelay:?
Define 'weak' keyword?
What are the features of ios?
What is a weak var?
Is it safe to update to ios 13?
Whats the difference between frame and bounds?
Which is easier android or ios development?
what is singleton class? Why the whole application creates a single instance?
What happens if iapplication object does not handle an event?
Explain about AFNetworking. What is the base class used in AFNetworking library
What is called before viewdidload?
What is singleton in ios swift?
What are the delegate methods of mkmapview?