public static void Main() {
var intArray = new[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
var arraySubrange = intArray[3..7]; // Array subrange is now a 'view' on to intArray that includes the values 3, 4, 5, 6
var lastElement = intArray[^1]; // lastElement is 9
}