void main()

{

    import std.stdio: writeln;

    {

        // example from "Introduction to Algorithms" Cormen et al., p 146

        int[] a = [ 4, 1, 3, 2, 16, 9, 10, 14, 8, 7 ];

​

        foreach (i;   0 ..  1 ) writeln(i);  // 0

        foreach (i;   0 ..  0 ) writeln(i);  // no output

        foreach (i;   0 .. -1 ) writeln(i);  // no output

        foreach (i; a[0 ..  1]) writeln(i);  // 4

        foreach (i; a[0 ..  0]) writeln(i);  // no output

        foreach (i; a[0 .. -1]) writeln(i);  // Range violation

    }

}