func max<T : Comparable>(_: T, y: T) Return the greater of x and y Declaration func max<T : Comparable>(x: T, y: T) -> T func max<T : Comparable>(_: T, y: T, z: T, rest: T...) Return the greatest argument passed Declaration func max<T : Comparable>(x: T, y: T, z: T, rest: T...) -> T