On Fri, Jan 14, 2005 at 02:46:58PM -0500, Austin Hastings wrote:
> >rules, I can easily have it either way.
> >
> > {for (my $n=0; $n<10; ++$n) {...}} # Local to loop
> > for (my $n=0; $n<10; ++$n) {...} # Persistent
> >
> >--Dks
> >
> But there's no clean way to make some of them temporary and some
> persistent.
>
> This seems like a legitimate place for "saying what you intend", viz:
>
> for (my $n is longlasting = 0, $m = 1; ...) {...}
I see your point, but:
- at least in the kinds of programming I do, I rarely use more than
one loop variable (with the exception of nested loops, and even
there the second var is declared in the second loop line)
- even when I do, only rarely do I want some of them to persist and
some not
- if I do, I'm willing to suffer the minor ugliness of putting the
to-be-persistent ones outside the scope, rather than have to use a
property every time I want ANYTHING persistent.
- I would much prefer this:
my ($total, $last_seen, $had_errors) = (0)x3;
for ($my $i=0; $i < @elements; $i++) {...}
To this:
for (my $i=0,
$total=0 is longlasting,
$last_seen=0 is longlasting,
$had_errors=0 is longlasting;
$i < @elements;
$i++)
{
...
}
FWIW....
--Dks
