1 // random program i found
2 define function describe-list(my-list :: <list>, #key verbose?) => ()
3 format(*standard-output*, "{a <list>, size: %d", my-list.size);
5 format(*standard-output*, ", elements:");
7 format(*standard-output*, " %=", item);
10 format(*standard-output*, "}");
13 describe-list(#(1, 2, 3, 4, 5, 6));
14 // prints "{a <list>, size: 6}"
16 describe-list(#(5, 7, 3), verbose?: #t);
17 // prints "{a <list>, size: 3, elements: 5 7 3}"