I have an equality test. If a=b then b=a . (In my case "find overlapping spheres", in other words the equality test may be non-trivial.) The new adverb would compute only the upper triangular set of cases and thereby save about half the time.
NB. assuming the main diagonal could be interesting NB. the new adverb would compute these cases <:/~ i.7 1 1 1 1 1 1 1 0 1 1 1 1 1 1 0 0 1 1 1 1 1 0 0 0 1 1 1 1 0 0 0 0 1 1 1 0 0 0 0 0 1 1 0 0 0 0 0 0 1 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
