On Tue, Aug 27, 2019 at 10:47 PM 'Pascal Jasmin' via Beta <[email protected]> wrote: > I think all references for Z: should refer to u verb? Would Z: ever be > called in v verb? _1&Z: makes no sense. > As a simple example, find first prime whose next prime is greater than 5 > higher? > > [`(_2 Z: 1:)@.(5 < -) F.. ] p: i.20 > 23
Is this equivalence worth noting? ([ [ _2 Z: 5 < -) F.. ] p: i.20 23 The right argument to Z: is a on/off control value -- 0 means Z: does nothing that time. With this fold implementation, I anticipate seeing constructs like: f [ opcode Z: test > How might you get the first prime whose previous neighbour is less than 5 > higher? (29) Presumably, you were hinting at a variation on this: ([ [ 1 Z: 5 < -) F.. ] p: i.20 29 Thanks, -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
