Ah, good point.
PosDiff=: {{la=.x>.y if.do.end. sm=.x<.y if.do.end. la-sm}}
Thanks,
--
Raul
On Fri, Sep 24, 2021 at 9:16 AM R.E. Boss <[email protected]> wrote:
>
> https://homepages.cwi.nl/~storm/teaching/reader/Dijkstra68.pdf
>
> this is how I was educated.
>
>
> R.E. Boss
>
>
> -----Original Message-----
> From: Programming <[email protected]> On Behalf Of
> Raul Miller
> Sent: vrijdag 24 september 2021 12:37
> To: Programming forum <[email protected]>
> Subject: Re: [Jprogramming] single line direct definition
>
> Well, you could do:
>
> PosDiff=: {{la=.x>.y goto_a.label_a. sm=.x<.y goto_b.label_b. la-sm}}
>
> But why would you do that?
>
> --
> Raul
>
>
>
> On Fri, Sep 24, 2021 at 6:03 AM R.E. Boss <[email protected]> wrote:
> > This is (also) the only one I could think of, but apparently there is no
> > other separator available in DD.
> > Thanks.
> >
> > R.E. Boss
> >
> >
> > -----Original Message-----
> > From: Programming <[email protected]> On Behalf
> > Of Raul Miller
> > Sent: vrijdag 24 september 2021 11:41
> > To: Programming forum <[email protected]>
> > Subject: Re: [Jprogramming] single line direct definition
> >
> > Are you looking for this?
> >
> > PosDiff=: {{la-sm[sm=.x<.y[la=.x>.y}}
> >
> > --
> > Raul
> >
> > On Fri, Sep 24, 2021 at 5:01 AM R.E. Boss <[email protected]> wrote:
> > > Again, I know all that, since quite long actually.
> > > But now with the direct definition, {{ }} , how is it done there?
> > >
> > > R.E. Boss
> > >
> > > -----Original Message-----
> > > From: Programming <[email protected]> On
> > > Behalf Of Elijah Stone
> > > Sent: vrijdag 24 september 2021 10:34
> > > To: [email protected]
> > > Subject: Re: [Jprogramming] single line direct definition
> > >
> > > On Fri, 24 Sep 2021, R.E. Boss wrote:
> > >
> > > > See https://www.jsoftware.com/help/learning/12.htm
> > > >
> > > > My point is for a non-trivial verb, how can I cram this in one DD line.
> > >
> > > One way is to perform the definitions in-line:
> > >
> > > 4 : 'la - sm [ la =. x >. y [ sm =. x <. y'
> > >
> > > There is also Michal Wallace's proposal to use '..' as a sentence
> > > separator, with which you might write:
> > >
> > > 4 : 'la =. x >. y .. sm =. x <. y .. la - sm'
> > >
> > > -E
> > >
> > > > R.E. Boss
> > > >
> > > >
> > > > -----Original Message-----
> > > > From: Programming <[email protected]> On
> > > > Behalf Of Elijah Stone
> > > > Sent: vrijdag 24 september 2021 10:12
> > > > To: [email protected]
> > > > Subject: Re: [Jprogramming] single line direct definition
> > > >
> > > > That is the same as:
> > > >
> > > > 4 : 0
> > > > la =. x >. y
> > > > sm =. x <. y
> > > > la - sm
> > > > )
> > > >
> > > > We can substitute the intermediate variables:
> > > >
> > > > 4 : 0
> > > > (x >. y) - (x <. y)
> > > > )
> > > >
> > > > And collapse onto one line: 4 : '(x >. y) - (x <. y)'
> > > >
> > > > Worth noting is that we can write this as a fork: >. - <.
> > > >
> > > > -E
> > > >
> > > > On Fri, 24 Sep 2021, R.E. Boss wrote:
> > > >
> > > >> From Learning J
> > > >>
> > > >> PosDiff =: 4 : ('la =. x >. y' ; 'sm =. x <. y' ; 'la - sm')
> > > >>
> > > >> How do I transfer this in a single line direct definition?
> > > >>
> > > >>
> > > >> R.E. Boss
> > > >> -----------------------------------------------------------------
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