!. never seems to work for things I want it too :P Here is a function to get a custom fill during unboxing. A cute $. trick.
unboxfill =: ((0 $. (3 ; [) $. $.@:]) >) 1 unboxfill 3;2 4 3 1 2 4 > 3;2 4 3 0 2 4 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
