Not sure what you want, you seem to mean the "loop variable" and not an "iterator"¹.
Anyway like always there is a way to do it in Perl!
(... but "easy" isn't necessarily the first attribute which comes to mind here... neither is "recommendable"² ;-)
The following code tries to cover all thinkable use cases:
my @a="a".."c";
my @b=1..3;
print "@a\n";
our $alias;
*alias=\$a[2];
{
local $a[1]; # otherwise $a[1] is undefined after the loop
while ( $a[1] = <@b>) {
$alias=$a[1]+1;
print "@a\n";
}
}
print "@a\n";
__END__
a b c
a 1 2
a 2 3
a 3 4
a b 4
Cheers Rolf
( addicted to the Perl Programming Language)
¹) from perlglossary
iterator
A special programming gizmo that keeps track of where you a
+re in
something that you’re trying to iterate over. The "foreach
+" loop
in Perl contains an iterator; so does a hash, allowing you
+to each
through it.
²) NB the elements of @b are stringified in the loop...
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