Maybe this is what you want:

#!/usr/bin/perl

use strict;
use warnings FATAL => 'all';

use 5.009_005; # or MRO::Compat;


package MyClassDataHelper;
{

    sub get_all_class_data {

        my $invocant = shift;

        my $class = ref( $invocant ) || $invocant;

        my @all_class_data;

        {

            no strict 'refs';

            for my $package ( @{ mro::get_linear_isa( $class ) } ) {
                next unless defined *{"${package}::get_class_data"}{CO
+DE};
                push @all_class_data, $package->get_class_data;
            }

        }

        return @all_class_data;

    }

}

package MyClass::A;
{

    use base qw( MyClassDataHelper );

    sub get_class_data { return 'MyClass::A data' }

}

package MyClass::B;
{

    use base qw( MyClass::A );

    sub get_class_data { return 'MyClass::B data' }

}

package MyClass::C;
{

    use base qw( MyClass::B MyClass::A );

    sub get_class_data { return 'MyClass::C data' }

}

package MyClass::D;
{

    use base qw( MyClass::C MyClass::A MyClass::B );

}


# Tests

print map { "$_\n" } MyClass::D->get_all_class_data;

# Output:
# MyClass::C data
# MyClass::B data
# MyClass::A data

print map { "$_\n" } MyClass::C->get_all_class_data;

# Output:
# MyClass::C data
# MyClass::B data
# MyClass::A data

print map { "$_\n" } MyClass::B->get_all_class_data;

# Output:
# MyClass::B data
# MyClass::A data

print map { "$_\n" } MyClass::A->get_all_class_data;

# Output:
# MyClass::A data
[download]

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.