Jose Mario Quintana wrote: > The pure tacit form of CHAR is just a variation of Henry's suggestion: > > char=. &: (a.&i.) > ... > When it is invoked it renders an ambivalent verb.
Thus, Mark's tacit version was not identical to the prior versions, which return a domain error if used monadically. In the long (1 : 0) definitions we can use [: in the monadic definition to result in a syntax error, instead. That error seems preferable to the domain error, but I'm happy to hear other opinions. I've tried to think of a way to make a tacitly-defined adverb strictly dyadic, but cannot identify any way to do so. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
