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Re: Announcing Perl 7
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From:
demerphq
Date:
July 3, 2020 17:57
Subject:
Re: Announcing Perl 7
Message ID:
CANgJU+UZN6nGDXCw6uZh-f3WB-TOXFz8TzZDGOVyvyEcJ5DXXg@mail.gmail.com
On Fri, 3 Jul 2020 at 19:35, Christian Walde <walde.christian@gmail.com> wrote:
>
> On Fri, 03 Jul 2020 19:33:20 +0200, demerphq <demerphq@gmail.com> wrote:
>
> > On Fri, 3 Jul 2020 at 19:19, Paul "LeoNerd" Evans
> > <leonerd@leonerd.org.uk> wrote:
> >>
> >> On Thu, 2 Jul 2020 11:56:19 -0400
> >> Dan Book <grinnz@gmail.com> wrote:
> >>
> >> > FYI, I have collected my core thoughts on the discussion here:
> >> > http://blogs.perl.org/users/grinnz/2020/07/perl-7-a-risk-benefit-analysis.html
> >>
> >> (to copy my comment on the post, for posterity of the mailing list)
> >>
> >> A huge +1 to all of this. Thank you for articulating it so coherently. I
> >> am in entire agreement with this whole idea.
> >
> > So if I understand you both correctly, we have to continue to support
> > all perl 5 code forever?
> >
> > Because that is what I understand you to be saying.
> >
> > To me this question comes down to a simple technical question: what
> > language variant does the parser start out expecting before it sees
> > the "use v7" line?
> >
> > If we say "perl 5" then we have to support all of perl 5 forever don't we?
> >
> > Doesn't that kind of er, stand in the way of not supporting perl 5 forever?
> >
> > Doesn't it make a lot more sense to say "prior to seeing a C<use
> > v$DIGIT;> statement the parser will be expecting the *latest* variant
> > of the language"? Isn't the certainty of that the only sane choice if
> > we are ever to deprecate older variant code?
> >
> > cheers,
> > Yves
> >
>
> As mentioned in the reply i sent just previously: You can have versions mandatory and still have the interpreter "forget" Perl 5.
I'm still trying to find that mail. Really. There are so many threads
involved I haven't found it yet. But I don't get it really.
cheers,
Yves
--
perl -Mre=debug -e "/just|another|perl|hacker/"
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