Raul,
You need the )v decorator. Try the following:
f=: {{)v
23+y
:
x+y
}}
On Tue, Oct 20, 2020 at 4:01 PM Raul Miller <[email protected]> wrote:
> > Henry Rich wrote the specs for DD and did the implementation. It is now
> up
> > to all of us to shake it out and look for improvements.
>
> One thing I am hoping for (and/or looking forward to) is some way of
> providing both the monadic and dyadic verb definitions.
>
> Specifically, in j902-beta-i:
>
> {{
> 9 F y
> :
> x+y
> }}
> 4 : 0
>
> 9 F y
> )
>
> That's said, it's nice to have a mechanism that allows nested code.
> It's slightly sad to lose the discipline that came from the absence of
> that mechanism, but I think this will somewhat improve the ability to
> talk with people with experiences in many other programming languages.
>
> Thanks,
>
>
> --
> Raul
>
> On Tue, Oct 20, 2020 at 12:09 PM Eric Iverson <[email protected]>
> wrote:
> >
> > DirectDefinition is a significant new feature in J902-beta-i.
> >
> > DD is a new way to define verbs/adverbs/conjunctions that we think is a
> > worthwhile improvement over n : ....
> >
> > f=: {{x+y}} NB. f=: 4 : 'x+y'
> > 2 f 3
> > 5
> > 2{{x+y}}3 NB. 2(4 : 'x+y')3
> > 5
> >
> > The power of DD is clearer with multiple lines and nested definitions.
> >
> > For details, see:
> > https://code.jsoftware.com/wiki/Vocabulary/DirectDefinition
> >
> > One possibly controversial decision was to use {{ and }} as they don't
> > follow J word rules. The importance of DD and the better readability over
> > alternatives such as (. and ). weighed in that difficult decision.
> >
> > Henry Rich wrote the specs for DD and did the implementation. It is now
> up
> > to all of us to shake it out and look for improvements.
> >
> > ***
> > J902-beta-i available for windows/macos/linux.
> >
> > If you already run 902-beta, then upgrade is easy:
> > load'pacman'
> > 'upgrade'jpkg'jengine'
> >
> > A lot of changes have accumulated in 902 and now is a good time to update
> > the base library and all addons.
> >
> > If you have not started 902 beta cycle, now is the time:
> > https://code.jsoftware.com/wiki/System/Installation/J902
> > ----------------------------------------------------------------------
> > For information about J forums see http://www.jsoftware.com/forums.htm
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>
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