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Postings from November 2012
On Sat Nov 24 08:16:13 2012, alh wrote:
> On Sat, Nov 24, 2012 at 10:34 AM, Father Chrysostomos via RT <
> perlbug-followup@perl.org> wrote:
>
> > >
> > > Is there any other case besides for/foreach that 'a..z' should
> iterate on
> > > the fly rather than immediately generate a list in memory?
> >
> > I hadn’t thought of that, but if it could iterate on the fly in more
> > places it would allow for more idiomatic code.
> >
> >
> I see these as being sensible uses of iteration:
>
> for ('a'..'z', qw(cat dog mouse), 1..10) { print $_ }
>
> my @found = grep { $_ =~ /./ } 1..10;
>
> my %hash = map { $_ => 1 } 1..10*;*
>
> But should this iterate at runtime or be pregenerated as it is now?
That’s a hard question. :-)
>
> my @arr = (1..10);
>
> If it's in a sub that's never hit, there's a memory saving there if it
> iterates when requested.
>
> -- Matthew Horsfall (alh)
--
Father Chrysostomos
---
via perlbug: queue: perl5 status: open
https://rt.perl.org:443/rt3/Ticket/Display.html?id=30123
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