Extending Array to check if it is sorted in Swift?

Question

I want to extend Array class so that it can know whether it is sorted (ascending) or not. I want to add a computed property called isSorted. How can I state the

Answer 1

The alternative solution to a free function is to do what Swift's built-in Array.sort and Array.sorted methods do, and require that you pass a suitable comparator to the method:

extension Array {
    func isSorted(isOrderedBefore: (T, T) -> Bool) -> Bool {
        for i in 1..) // true