Thanks, that's nicer. But even that is not quite correct.
'z' lessThan 'z' 1 perhaps lt=: (({.@:sort -: {.) *. ({.~:{:))@,&<&, On Saturday, March 14, 2020, 12:59:15 AM GMT+9, Raul Miller <rauldmil...@gmail.com> wrote: Maybe lessThan=: ({.@:sort -: {.)@,&<&, Thanks, -- Raul On Fri, Mar 13, 2020 at 11:41 AM 'Jon Hough' via Programming <programm...@jsoftware.com> wrote: > > Thanks, > > you are, of course, correct, and I should have thought about it a bit more. I > am trying to make string comparison verbs > and this will make the solution a little more ugly. > > lessThan=: ({.@:sort -: {.)@:; > 'abc' lessThan 'def' > 1 > > > 'z' lessThan 'ab' > 1 > Needs a little more work for literals with no rank. > ]`(1&$)@.((''&-:)@:$) 'z' > > As far as I can see there is no string comparison in the J stdlib. > > Thanks, > Jon > > On Friday, March 13, 2020, 03:12:48 PM GMT+9, Thomas McGuire ><tmcguir...@gmail.com> wrote: > > The first 2 of the list have no rank. > > $ each words > > $ each words > ┌┬┬─┬─┬─┬─┐ > │││3│3│4│4│ > └┴┴─┴─┴─┴─┘ > words =: (1$'a');(1$'z');'zza';'abc';'zabc';’abbb' > > $ each words > ┌─┬─┬─┬─┬─┬─┐ > │1│1│3│3│4│4│ > └─┴─┴─┴─┴─┴─┘ > sort words > ┌─┬────┬───┬─┬────┬───┐ > │a│abbb│abc│z│zabc│zza│ > └─┴────┴───┴─┴────┴───┘ > Above if I give everything a 1 dimensional rank it works as you would expect. > > Single letter in quotes is not a string > > It happens with single numbers as well: > b =:1 > $b > > > No output back > > Tom McGuire > > > On Mar 13, 2020, at 1:19 AM, 'Jon Hough' via Programming > > <programm...@jsoftware.com> wrote: > > > > words =: 'a';'z';'zza';'abc';'zabc';'abbb' > > ---------------------------------------------------------------------- > 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 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm