This is Ikegami's example I'm working off of, http://www.perlmonks.org/?node_id=383504#mutual_use, demonstrates how to use exporter. I create 3 files: sand_kidA.pm, sand_kidB.pm, and sand_parent.pl.

In this example, I have provided print methods to the sibling's variable inside opposite modules for the sake of demonstration of Exporter only. I am trying to get it so that the 'subroutine redefined' warning is appeased, even if the correct result is printed. On a higher level, the problem I am trying to solve is modules that reference each other. I am running on linux, perl 5.8.8. Please do not suggest turning the warnings off. Thanks in advance.

sand_parent.pl 
#!/usr/bin/perl

use sand_kidA qw(get_a);
use sand_kidB qw(get_b);
 
 print get_a();
 print get_b();

[download]
sand_kidA.pm 
#!/usr/bin/perl

use strict;
use warnings;

package sand_kidA;

BEGIN {
   our @ISA = qw( Exporter );
    our @EXPORT_OK = qw(set_a get_a print_b);  # symbols to export on 
+request
    require Exporter;
}

use sand_kidB qw(get_b);

my $a = 5;

sub print_b
{
    print get_b();
}

sub set_a
{
    my $val = shift;
    $a = $val;
}

sub get_a
{
    return $a;
}

1;

[download]
sand_kidB.pm 
#!/usr/bin/perl

use strict;
use warnings;

package sand_kidB;

BEGIN {
       our @ISA = qw( Exporter );
    our @EXPORT_OK = qw(set_b get_b print_a);  # symbols to export on 
+request
    require Exporter;
}
   
use sand_kidA qw(get_a);

my $b = 6;

sub print_a
{
    print get_a();
}

sub set_b
{
    my $val = shift;
    $b = $val;
}

sub get_b
{
    return $b;
}

1;

[download]

In reply to Exporter module help/example by Zen

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