Not exactly what you're asking, but Devel::Symdump has (among other useful things) two methods inh_tree() and isa_tree() that might help.  It works by analyzing the symbol table for a set of packages (all those which are loaded at the time of the call). 

...
... your code here
...
package main;

use Devel::Symdump;

print Devel::Symdump->inh_tree();

[download]

Output: 

Element
    Circle
    Line
    Square
Exporter
    Carp

[download]

(The presence of Exporter / Carp in the output is a side effect of the warnings pragma being loaded, which in turn loads Carp and Exporter as a dependency.)

In reply to Re: OO-Perl Question: How Do I get a List of derived Classes for a Base Class? by almut
in thread OO-Perl Question: How Do I get a List of derived Classes for a Base Class? by BluePerl

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