Close, but not exactly... i. is applied to both arguments.
-. eliminates overlapping values ~ swaps argument order. If you want a variation which handles negative values, you might try: to=:<. + i.@(+*)@-~ Thanks, -- Raul On Saturday, June 29, 2019, Thomas Bulka <thomas.bu...@posteo.de> wrote: > Am 29.06.2019 20:45 schrieb Clifford Reiter: > >> Do these experiments help? >> >> to =: -.&i.~,] >> >> 3 to 5 >> >> 3 4 5 >> >> 3 -.&i.~ 5 >> >> 3 4 >> >> 5 -.&i. 3 >> >> 3 4 >> >> (i.5)-.(i.3) >> >> 3 4 >> > > Hello Clifford, > > thank you very much for your quick reply! By working through your > examples, I got a better understanding, I think. Probably my description is > terminologically weak, but now I would describe my understanding of the > to-sentence like this: > > 1. The i~ is used to generate the vectors (i. y) and (i. x). > 2. The less-primitive is used to remove (i. x) from (i. y), giving a > result of x..y-1. > 3. Finally the ,] is applied to add the upper limit, provided as the > parameter y, to the result. > > Is this, what the to-sentence is supposed to do? > > Kind regards, > > Thomas > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
