[Jprogramming] Explicit vs tacit with assignment

[R.E. Boss]

AMEN.

When you try to uphold the rules of a language (which is done only by older people), you are fighting a lost battle. 


R.E. Boss


> -----Oorspronkelijk bericht-----
> Van: Programming <programming-bounces at forums.jsoftware.com>
> Namens Henry Rich
> Verzonden: donderdag 21 november 2019 04:02
> Aan: programming at jsoftware.com
> Onderwerp: Re: [Jprogramming] Explicit vs tacit with assignment
> 
> Think nothing of it.  I was back in the highschool today, talking linear algebra
> to the very top layer of the high-performing students, having them write
> proofs on the board. It is obvious that the distinction between "its" and "it's"
> is not observed in practice, even among these kids who are tomorrow's
> elite.  It will be gone in another 100 years.
> 
> Back when I was teaching Latin, I tried to give examples of the difference
> between transitive and intransitive verbs in English. I started,
> 
> We say "I lay the book on the table: I lay it, I laid it yesterday, I have laid it
> there many times."
> 
> We say "I lie down for a nap.  I lie down, I lay down yesterday, I have lain
> down..."
> 
> the rest of the sentence was drowned out by cries of "No!".  They had never
> heard such a thing.  My conclusion: "lie" is dead. Write it off.
> 
> I have already written off "whom".  The language evolves.
> 
> Henry Rich
> 
> On 11/20/2019 9:52 PM, Louis de Forcrand wrote:
> > Just to correct a mistake that I always hate making:
> >
> > "... for use after _its_ application ..."
> >
> > Sorry for the noise,
> > Louis
> >
> >> On 21 Nov 2019, at 03:49, Louis de Forcrand <olius at bluewin.ch> wrote:
> >>
> >> (a,a=.?@#) is a verb, namely (?@# , ?@#). In this expression a is set to the
> _verb_ ?@# and then train (a,a) is evaluated.
> >>
> >> In the second case a is set to the _result_ of ?@# and then (a,a) is
> evaluated. To do this tacitly:
> >>
> >> (] , ]) @ (?@#)
> >>
> >> or more concisely
> >>
> >> ,~@?@#
> >>
> >> or equivalently (how I would write it)
> >>
> >> 2 $ ?@#
> >>
> >> As Henry said, to store an intermediate value in a verb's evaluation for use
> _after_ it's application, you must use an explicit verb, for example:
> >>
> >> ,~ @ (3 : 'a=: y') @ (?@#)
> >>
> >> Cheers,
> >> Louis
> >>
> >>> On 21 Nov 2019, at 03:26, Nimp O <traws at outlook.com> wrote:
> >>>
> >>> Hello, simple question.
> >>>
> >>> This behaviour surprised me.
> >>>
> >>>   (a,a=.?@#)'01234'
> >>> 2 4
> >>>
> >>>   3 : 'a,a=.?@#y' '01234'
> >>> 1 1
> >>>
> >>> Why a is not equal to a in the first case? How can I save the roll as an
> intermediate result in the tacit version?
> >>> Thanks.
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