Hi Bo, (,: , 1"1) is a fork in the (V V V) form and both 1"1 and 1: make the noun 1 into a constant verb with the same result and so are interchangeable.
t=: 1"1 s=: 1: r=: 1 4!:0 <'t' 3 4!:0 <'s' 3 4!:0 <'r' 0 The other alternative would be to turn this into a (N V V) fork by using ~ resulting in (1 ,~ ,:) …untested. Cheers, bob On 2012-12-21, at 8:49 AM, Bo Jacoby wrote: > Thanks Brian! > > You are perfectly right, / works and is nicer and shorter. > 20 5 0(*`%/"2@(,: (%:@* -.))@((,: , 1"1) % +/@[))10 > 8 2 0 > 1 1 0 > > But J translates / into ´:3 > *`%/"2@(,: (%:@* -.))@((,: , 1"1) % +/@[) > *`%`:3"2@(,: (%:@* -.))@((,: , 1"1) % +/@[) > > > I guess thats why, while developping the program, I thought that ´:3 was > the proper way to do it. But as you are quite right I will change it. > > Another character is saved by replacing 1"1 by 1: It seems to work. I > don't quite understand why. > 20 5 0(*`%/"2@(,: (%:@* -.))@((,: , 1:) % +/@[))10 > 8 2 0 > 1 1 0 > > > - Bo > > > > >> ________________________________ >> Fra: Brian Schott <schott.br...@gmail.com> >> Til: programm...@jsoftware.com >> Sendt: 14:10 fredag den 21. december 2012 >> Emne: Re: [Jprogramming] Deduction, Induction, and Prediction. >> >> Why do you use `:3 and not / in deduce? >> I have always thought the former was ugly. >> >> -- >> (B=) <-----my sig >> Brian Schott >> ---------------------------------------------------------------------- >> 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
