If you want a variable not to be reset to 1, don't assign one to it. Initialize it outside the subroutine (and you can still use my. In recent Perls, you can use state.

a.pl:

#!/usr/bin/perl
use warnings;
use strict;

use MyLib qw{ verify };

verify() for 1 .. 10;

[download]

MyLib.pm: 

package MyLib;
use parent 'Exporter';
our @EXPORT_OK = qw{ verify };

my $counter = 1;
sub verify {
    print $counter++, "\n";
}

[download]

Output:

1
2
3
4
5
6
7
8
9
10

[download]
لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re: Retain global value across files by choroba
in thread Retain global value across files by Pavanai

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