coerce =: 2 : ']`[email protected]' < coerce (0= L.)2 ┌─┐ │2│ └─┘
It could also be written as (2 : 'u`]@.v'), and I would guess that is easier to make tacit, but I don't know how to do that one either. Maybe its not possible? ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
