In Apple Swift, if an optional variable is defined without providing an initial value, then that particular variable is automatically set to which of the following?

In Apple Swift, which of the following statements are correct about extensions?

Which of the following statements are incorrect regarding a deinitializer in Apple Swift?

In Apple Swift, which of the following statements are incorrect regarding structures?

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

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

How many times will this loop be executed? for i in 0...100 {print(i)}

What is the correct way to add a value to this array? var strings = [1, 2, 3]

All value types in Swift are _ under the hood?

How do you reference class members from within a class?

Which code snippet correctly creates a typealias closure?