a=: 3#.inv 49401 10852 55070 6484 14621 8515 {{ {. (#~ <&2) y }}"1 |: a 0 1 1 1 1 0 0 1 0 0 ([: {. (#~ <&2))"1 |: a 0 1 1 1 0 0 0 0 0 0
This bug was not present in j64-807 (though I have to use the older 3 :'' form there). It is present in j901. -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm