On Mon, Apr 4, 2011 at 11:46 AM, Zsbán Ambrus <[email protected]> wrote: > That's not what the dictionary says though. The dictionary page > "http://www.jsoftware.com/help/dictionary/dtdotu.htm"; claims that it > was designed to deal with a left argument too.
You are right. In that case, ^t. could display as itself, and not derive its result until it knows whether or not it has a left argument to go with its right argument. But that does not seem like a useful design, since ^t. would no longer display anything informative. Another option would be to return a monad : dyad expression. In other words: ^t. !@% :(^ * !@%) In other words, if U is the current result of t. return U 1 :'u : (^ * u)' I am not sure that I particularly like this either -- I imagine that a small change to the dictionary could be better. -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
