[Turn on line numbering] arg n; var x, y; return map x in [1 .. n] to (map y in [1 .. n] to (x == y ? 1.0 : 0.0)); // Miroslav Silovic // Created 19-Oct-1996 as a part of ColdCore, see: @help Credit
arg n; var x, y; return map x in [1 .. n] to (map y in [1 .. n] to (x == y ? 1.0 : 0.0));