func max<T : Comparable>(_: T, _: T) Returns the greater of x and y. If x == y, returns y. Declaration func max<T : Comparable>(x: T, _ y: T) -> T func max<T : Comparable>(_: T, _: T, _: T, _: T...) Returns the greatest argument passed. If there are multiple equal greatest arguments, returns the last one. Declaration func max<T : Comparable>(x: T, _ y: T, _ z: T, _ rest: T...) -> T