Dyad -. is an expensive operation. For efficiency, try some other variations such as Raul just suggested.
Sat, 29 Jun 2019, Raul Miller написал(а): > 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 -- regards, ==================================================== GPG key 1024D/4434BAB3 2008-08-24 gpg --keyserver subkeys.pgp.net --armor --export 4434BAB3 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
