On Thu, Feb 4, 2010 at 5:56 PM, Alex Gian <[email protected]> wrote:
> similar construct before. E.g. I can't intuitively see why Ric's > suggestion ( [: % [: +/ % ) isn't ( [: % [: +/ [: % ), guess I'll just > have to rtfm. > > Because [: needs to be in an odd position (counting from the right). The even positions are combining verbs. When [: is in an odd position it means that the verb to its right is being used without a left argument, instead of its "two argument" meaning. If [: were in an even position that would mean that you do not want any calculations to take place (that would be a guaranteed error condition). -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
