Hello Jay, I'm using emacs and gnu-apl-mode but when I try to define the operator without the space I receive an error: "unable to parse".
Generally I use emacs, cause under Mac OS X I'm not able to use the APL keyboard... I didn't find a way :-) (tried xmodmap, setxbdmap, etc). I also tried with ]keyb (it displays correctly the APL keyboard on the screen, but I don't understand how the keys are mapped). I tested without emacs (using copy'n'paste) and it works. regards, Fausto 2015-04-14 13:25 GMT+02:00 Jay Foad <jay.f...@gmail.com>: > You shouldn't need a space after the right parenthesis. > > This works for me: > > z←(F scan)x;y > z←⊂y←↑x > ∆1:→(0=⍴x←1↓x)/0 > z←z,⊂y←y F↑x > →∆1 > > +scan 2 3 4 > 2 5 9 > > I had to: > - change " to ↓ for Drop > - use monadic ↑ instead of ⊃ for First (this is a Dyalog "migration > level" thing) > - replace modified assignment z,← with z←z, > > Jay. > > On 14 April 2015 at 12:06, Fausto Saporito <fausto.sapor...@gmail.com> > wrote: > > Hi Jürgen, > > > > thanks... my fault. I wrote without space after the right parenthesis and > > the interpret gave me an error. I.e. ∇z←(F scan)x;y > > > > I didn't notice the blank space was mandatory. > > > > regards, > > Fausto > > > > > > > > 2015-04-14 12:58 GMT+02:00 Juergen Sauermann > > <juergen.sauerm...@t-online.de>: > >> > >> Hi Fausto, > >> > >> page 30 (Defined Functions and Operators) explains it. > >> In your example below F is expected to be a function because it > >> is inside () in the header while the variable(s) are outside (). > >> > >> /// Jürgen > >> > >> > >> On 04/14/2015 12:42 PM, Fausto Saporito wrote: > >> > >> Hello all, > >> > >> sorry if I bother you again, but I tried to find some hints in the APL2 > >> Language Reference Manual without luck. > >> > >> In the Sullivan's paper, there's the reference to a "scan" operator > quite > >> fast more suited to be used with his multi precision package. > >> This is its definition: > >> > >> ∇ z←(F scan)x;y > >> > >> z←⊂y←⊃x > >> ∆1:!(0=⍴x←1"x)/0 > >> z,←⊂y←y F⊃x > >> !∆1 > >> > >> the "!" is the branch arrow. > >> > >> Now the problem is with GNU APL I cannot define this operator, cause I > >> don't know how to specify F is a function not a variable. > >> > >> is there a way to do that ? > >> > >> thanks, > >> fausto > >> > >> > >> > >> > > >
