I am not cheering on work on _. but they can be found: x=: 1 2 _. 4 5 8.8 _. _ __
x~:x 0 0 1 0 0 0 1 0 0 _. is the only number not equally to itself. A bit of J humor On Tue, Feb 8, 2022 at 3:23 PM Hauke Rehr <hauke.r...@uni-jena.de> wrote: > answeres below > > Am 08.02.22 um 21:12 schrieb Henry Rich: > > Generalities may spur the imagination, but to use _. we would need a > > detailed spec for what every verb would do given indeterminate input. > > Where would it appear in the collating sequence? > > > Collating: > maybe I’m naive but I thought it wouldn’t matter much > as long as it’s defined > > for the verb spec, I thought my desription was complete > I’ll take another look > > If _. doesn't match _., how would I find the number and location of _. > > values in an array? > > > part of the i. family belongs to what I called selectors > so I don’t see a problem there (but you need to know the correct idioms) > > The fact that Roger didn't find a way to integrate _. into the language > > should put us all on warning that the problem is very hard. > > > absolutely. > Is there documentation of what thought has already gone into this? > I’m trying to figure out where those problems are I don’t see yet. > (which doesn’t tell anything about those problems but about me: > currently, I’m unable to see them) > > Henry Rich > > > > > > -- > ---------------------- > mail written using NEO > neo-layout.org > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
