"Latest range/hat operators example taken from "Building C# 8.0""

Index i1 = 3;  // number 3 from beginning
Index i2 = ^4; // number 4 from end

int[] a = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };

Console.WriteLine($"{a[i1]}, {a[i2]}"); // "3, 6"

var slice = a[i1..i2]; // { 3, 4, 5 }