I asked how to write tacit A A=: 1 : '0&(;@:u) :: empty'
And have discovered parentheses to convert the conjunction into an adverb. The answer is A=: ((0&)(;@:))( ::empty) ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
