That's really a naming thing. It's testing for less than or equals.
Your original version also had this character:
'test' ({.@:sort -: {.)@:; 'test'
1
But, yes, you can suppress the equality part with a further test.
Thanks,
--
Raul
On Fri, Mar 13, 2020 at 12:15 PM 'Jon Hough' via Programming
<[email protected]> wrote:
>
> 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
> <[email protected]> wrote:
>
> Maybe
> lessThan=: ({.@:sort -: {.)@,&<&,
>
> Thanks,
>
> --
> Raul
>
> On Fri, Mar 13, 2020 at 11:41 AM 'Jon Hough' via Programming
> <[email protected]> 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
> > <[email protected]> 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
> > > <[email protected]> wrote:
> > >
> > > words =: 'a';'z';'zza';'abc';'zabc';'abbb'
> >
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