I want to derive a new class from IO::Dir. The only difference should be that the new class overrides the read method with a new one which only returns .pl files. To keep things as simple as possible, Version 0 of the new method does nothing but return undef. The following code always returns the message:

Can't find method "new" via package "IO::Dir::pl"...

use strict;
use warnings;
use Autodie;
use IO::Dir;
my $dh = IO::Dir::pl->new('.');
while (my $file_name = $dh->read_pl()){
    print STDOUT "$file_name\n";
}

package IO::Dir::pl;
use vars '@ISA';
@ISA = ('IO::Dir');

sub read{
    my $self = shift;
    warn "Ok We got here.\n";
    return undef;
}

[download]

The @ISA array does not appear to work as expected.

Bill

In reply to My first attempt at inheritance by BillKSmith

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