Based on var index = UInt8.max, which of the following operation results to the value of zero for var index?

Output of code ? import UIKit import AVFoundation var p: AVAudioPlayer?

If a class is named 'MyClass' with a nested enum called 'Status', how do you indicate that a variable is an enum of type 'Status' outside the context of 'MyClass'? class MyClass { enum Status { case On, Off } }

Appropriate syntax for dispatching a heavy operation to a background thread?

How to hide status bar in iOS app with Swift as follows?

How can you fix the missing characters for the following code? func userScore -> Bool { return true }

How will ARC handle 'Country' instance and 'country2' reference when 'country1' is set to 'nil'?

What will be the final value of 'a.data' and 'b.data' after following codes are executed?

What is the type of Swift String, Dictionary, Array?

Which keyword do you use to define a function?

What is the name of the following function: func potteryBarn (name: String, score: Int) -> String { return 'Hello (name)! Your score is (score).'}