Are you asking about trains (hooks and forks)? http://www.jsoftware.com/help/dictionary/dictf.htm
Thanks, -- Raul On Sun, Apr 2, 2017 at 3:39 AM, Martin Kreuzer <[email protected]> wrote: > Hi all - > > In section 'Primes' of the Vocabul I found this line of code (at the very > end, function no 5): > > (- ~:) &. q: y > > I do know that it is another way to calculate the totient of y, and > I'm somehow familiar with the use of (~:) and (&.) and (q:), but > have not yet found any documentation of this construct (- ~:) > [btw, these seem to work too (+ ~:), (* ~:), (% ~:)] > > Where should I explore further..? > > -M > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
