Nice try but when I am wearing my hard-core tacit programmer hat I do not
like to look at blatant ugly explicit definitions which are referring to
arguments. ;) Heck, I do not like the smell of verbs of this kind either,
stinky=. ('''' , [ , '''' , a. {~ 38 40 52 32 58 39 40 120 41 61 58 32 121
39 41"_) 128!:2 ]
PS. Feel free to bring any argument suggesting that verbs involving side
effects are not tacit.
On Fri, Jul 14, 2017 at 6:46 PM, Raul Miller <[email protected]> wrote:
> And yet, all of your verbs can be pure tacit.
>
> For example, you could use
>
> is=:1 :'(m)=:y'
>
> That said, there is an argument that side effects make a verb impure. But I
> am ignoring that kind of thing.
>
> Thanks,
>
> --
> Raul
>
> On Friday, July 14, 2017, Jose Mario Quintana <
> [email protected]>
> wrote:
>
> > That is a different matter.
> >
> > Indeed, "=: works and is simple" as long as one is not concerned about
> > producing (pure) tacit verbs. In that latter context, apparently, it
> does
> > not work well, is not simple to use and its forced use might trigger
> gross
> > space and time inefficiencies (for example, as discussed recently in the
> > "[Jprogramming] Side effects in tacit expressions" thread).
> >
> > Introducing new primitives is, in my view, a matter of perspective and
> > opportunity. I thought the verbs =.. and =:: had sufficient merits and
> I
> > had the means to include them in the version of the J interpreter that I
> > use almost all the time (Jx). I just thought this could be an
> opportunity
> > to make the official interpreter a little more tacit friendly for the
> > benefit of other tacit programming hard-core fans; that is all.
> >
> > In any case, there are other much more important unfortunate omissions,
> in
> > current official implementations, that drastically hinder tacit
> programming
> > (but that is yet another topic for another time).
> >
> >
> > On Thu, Jul 13, 2017 at 8:36 PM, Raul Miller <[email protected]
> > <javascript:;>> wrote:
> >
> > > Ok, but a routine being interesting is not sufficient motivation for
> > > incorporating it as a language primitive. There are just too many
> > > interesting possibilities.
> > >
> > > =: works and is simple.
> > >
> > > Thanks,
> > >
> > > --
> > > Raul
> > >
> > > On Thursday, July 13, 2017, Jose Mario Quintana <
> > > [email protected] <javascript:;>> wrote:
> > >
> > > > These [0, 1, 2, 3, 4, 5] are more forum instances of use or suggested
> > use
> > > > of the verb 4 :'(x)=: y' (or equivalent),
> > > >
> > > > [0] [Jprogramming] Tacit or Explicit Raul Miller
> > > > http://www.jsoftware.com/pipermail/programming/2017-
> > > > January/046538.html
> > > >
> > > > [1] [Jbeta] with effort for inplace assignment performance Raul
> Miller
> > > > http://www.jsoftware.com/pipermail/beta/2016-July/008397.html
> > > >
> > > > [2] [Jprogramming] copula Raul Miller
> > > > http://www.jsoftware.com/pipermail/programming/2014-
> > > > November/040246.html
> > > >
> > > > [3] [Jbeta] Why isn't copula a dyadic verb? Pascal Jasmin
> > > > http://www.jsoftware.com/pipermail/beta/2014-November/007754.html
> > > >
> > > > [4] [Jprogramming] copula Dan Bron
> > > > http://www.jsoftware.com/pipermail/programming/2014-
> > June/037704.html
> > > >
> > > > [5] Jforum: Syntax error on "is =: =:" josemarioquintana
> > > > http://www.jsoftware.com/pipermail/general/2002-June/009932.html
> > > >
> > > >
> > > > On Wed, Jul 12, 2017 at 8:11 PM, Jose Mario Quintana <
> > > > [email protected] <javascript:;> <javascript:;>> wrote:
> > > >
> > > > > Sure, there are different ways to perform a task, for example,
> > > > >
> > > > > 2&* 1 2 3
> > > > > 2 4 6
> > > > > +: 1 2 3
> > > > > 2 4 6
> > > > >
> > > > > What do you mean by "the rest of that"?
> > > > >
> > > > >
> > > > > On Wed, Jul 12, 2017 at 7:40 PM, Raul Miller <
> [email protected]
> > <javascript:;>
> > > > <javascript:;>>
> > > > > wrote:
> > > > >
> > > > >> All [1] needed was
> > > > >>
> > > > >> add=:4 :0
> > > > >> ((0{::y),'__x')=: ".1{::y
> > > > >> )
> > > > >>
> > > > >> But I don't really follow the rest of that.
> > > > >>
> > > > >> Thanks,
> > > > >>
> > > > >> --
> > > > >> Raul
> > > > >>
> > > > >>
> > > > >>
> > > > >> On Wed, Jul 12, 2017 at 7:14 PM, Jose Mario Quintana
> > > > >> <[email protected] <javascript:;> <javascript:;>>
> > wrote:
> > > > >> > The assignments are a consequence of J's agreement; see [0] for
> > > > example.
> > > > >> > If one wants the effect of 'a b c' =:i.3 4 5 using the verb is
> > > (or
> > > > a
> > > > >> > similar verb) then one can use 'a b c' is i.3 4 5 :)
> > > > >> >
> > > > >> > How is 'abc' is"0 i.3 4 5 useful? I do not know... Who
> knows?
> > > > >> >
> > > > >> > How is the verb is (or a similar verb) useful? See [1, 2]
> for
> > > > >> instance
> > > > >> > (not to mention for debugging tacit verbs).
> > > > >> >
> > > > >> > References
> > > > >> >
> > > > >> > [0] Rank and Uniformity Roger K.W. Hui
> > > > >> > http://www.jsoftware.com/papers/rank1.htm
> > > > >> >
> > > > >> > [1] [Jprogramming] Dynamic Language Features in J? Oleg
> Kobchenko
> > > > >> > http://www.jsoftware.com/pipermail/programming/2006-Decembe
> > > > >> r/004479.html
> > > > >> >
> > > > >> > [2] [Jprogramming] Saving Nouns as Permanent Data Jose Mario
> > > Quintana
> > > > >> > http://www.jsoftware.com/pipermail/programming/2008-April/
> > > > >> 010529.html
> > > > >> >
> > > > >> >
>
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