You probably can use 'state' instead of 'my' to keep $counter in scope.
foreach my $e ( 'a'..'z' ) {
state $counter++;
if ( $counter == 5 ) {
say $e;
}
}
Cheers,
Jing
On 9 Aug 2013, at 16:24, Dermot <[email protected]> wrote:
> my $counter = 0;
> foreach my $e ( a .. z ) {
> $counter++;
> if ( $counter == 5 ) {
> ....
> }
> }
>
> I know this is a perl idiom but I, and I suspect others, would find a perl
> variable useful for the keeping the count when iterating. The draw back with
> the above is that $counter has scope outside of the block and that seems
> messy. I am not sure why the C style loop, EG:
>
> for (my $i = 0; $i =< $#items; ++$i)
> {}
>
> is so unpopular. Probably because it does look nice. It does have the
> advantage of keeping all the variables in the immediate block so you don't
> need to worry about $counter 100 lines down the code.
> A feature request perhaps but I'm sure there are good reasons why the
> maintainers haven't added such a perlvar.
> Dermot.
>
>
>
> On 8 August 2013 18:11, jbiskofski <[email protected]> wrote:
> my $counter = 0;
> foreach my $e ( a .. z ) {
> $counter++;
> if ( $counter == 5 ) {
> ....
> }
> }
>
>
> On Thu, Aug 8, 2013 at 12:11 PM, jbiskofski <[email protected]> wrote:
> my $counter = 0;
> foreach my $e ( a .. z ) {
> $counter++;
>
>
>
> On Thu, Aug 8, 2013 at 12:05 PM, Unknown User <[email protected]>
> wrote:
>
> Hello,
>
>
> If i am iterating through the elements in an array, at any point is it
> possible to say which element i am handling without using a counter? Are
> there any builtins that i can use for it?
>
> ie
> foreach my $element (a..z) {
> ...
> if ( i am the 5th element ) { handle me special }
>
> }
>
> Thanks,
>
>
>
>
