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Postings from November 2012
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?
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)
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