Replace &. by &.: -- it's a "rank" thing.
Nicholas Spies wrote: > On page 18. Geometry of the J Dictionary, of the online documentation > that came with J, the example definition > > (length=: +/&.*:) 5 12 > > yields 5 12 instead of the displayed 13 > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
