DidSet and willSet are examples of _?

How many values does vals have after this code is executed? var vals = Set = ["4", "5", "6"] vals.insert("5")

How can you avoid a strong reference cycle in a closure?

What is wrong with this code? if let s = String.init("some string") { print(s)}

Which code snippet correctly creates a typealias closure?

How do you reference class members from within a class?

In Apple Swift, which of the following options hold true?

In Apple Swift, which of the following statements are correct regarding protocols?

Properties in the Apple Swift language?

ln Apple Swift. which of the following operators are right-associative?

In Apple Swift, which of the following variables and constants are computed lazily?