I think it's kind of mean to suggest that people who can understand ?6 2$10 are human while people who can understand 6 2 ?@$ 10 are not.
That said, I do understand that students can be mean, and that peer pressure is a thing. Thanks, -- Raul On Sat, Sep 2, 2017 at 1:55 PM, Linda Alvord <lindaalv...@verizon.net> wrote: > I'll side with the humans. > > ?6 2$10 > > Linda > > -----Original Message----- > From: Programming [mailto:programming-boun...@forums.jsoftware.com] On Behalf > Of Henry Rich > Sent: Saturday, September 2, 2017 12:50 PM > To: Programming forum <programm...@jsoftware.com> > Subject: Re: [Jprogramming] Another Problem to Sharpen J Skills > > Better > > 6 2 ?@:$ 10 > > which Is backed by special code. > > Henry Rich > > > On Sep 1, 2017 04:03, "'Mike Day' via Programming" < > programm...@jsoftware.com> wrote: > > I forgot to point out earlier that > > 6 12 $ ? 72 $ 10 > > may be defined more succinctly as > > ? 6 12 $ 10 > > FWIW, I had a look at an alternative approach, working on the union of all > rows: > > union =: ~.@:, NB. ie nub of the ravel > > rix =: (] #~ */@:(e."1)~) union NB. another row intersection verb > > > It works, but is more verbose, uses more memory and more cp time for the > limited > > cases I've explored. > > > Mike > > > > > > On 01/09/2017 08:40, 'Mike Day' via Programming wrote: > >> The main requirement is to obtain the set-intersection of the rows: >> >> rowintersection =: ([-.-.)&~./ >> >> (The &~. isn't essential, but it will save space for large arrays >> with significant repetition.) >> >> >> (Drafting this, I see Raul's beaten me to it, though he didn't >> include the &~. !!!) >> >> >> Also, >> >> colintersection =: rowintersection@:|: >> >> >> >> Cheers, >> >> >> Mike >> >> >> >> >> On 01/09/2017 07:48, Skip Cave wrote: >> >>> ]a =: 6 12$ ?72$10 >>> >> >> >> >> --- >> This email has been checked for viruses by Avast antivirus software. >> https://www.avast.com/antivirus >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm >> > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm