Since the subject of globals and scoping has come up I though I would point out a possible scoping issue with the $i variable in your code and liverpole's response. The $i inside the foreach loop is not the same one that you declared with the my $i; outside of it. The following code illustrates this.

use strict;
use warnings;

my $limit = 5;

printLimit($limit);

sub printLimit
{
    my $limit = shift;
    my $i = q{xyz};
    print qq{outside foreach: $i\n};
    foreach $i ( 1 .. $limit )
    {
        print qq{ inside foreach: $i\n};
    }
    print qq{outside foreach: $i\n};
}

[download]

Here's the output

outside foreach: xyz
 inside foreach: 1
 inside foreach: 2
 inside foreach: 3
 inside foreach: 4
 inside foreach: 5
outside foreach: xyz

[download]

You have to introduce $i with a my somewhere since we are running with use strict; so, since it is only being used inside the loop, why not declare it there?

foreach my $i ( ... )
{
    ...
}

[download]

I hope this is of interest.

Cheers,

JohnGG

In reply to Re: Garbage collection at subroutine return by johngg
in thread Garbage collection at subroutine return by tcarmeli

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