Dear monks,
I wonder how I can get a list of all loaded subclasses of a given base class x from a foreign module.
I thought this must be a FAQ, but I could find nothing in the FAQs, Conway's book 'Object oriented perl' and the cookbook.

I want this because I want to register all of them at initialization time. Currently I use an ugly hardcoded list. Since my module should be independent of the foreign module, I want to replace the hardcoded list with a dynamically retrieved one. Then all additions/deletions of subclasses would be tracked automatically.

The debugger has a hash %DB::sub containing all subroutines in scope, so in the debugger I could probably use something like 

require 'perl5db.pl';
my $base_class = 'x';
my @subclass_list = grep { $_->isa($base_class) } keys %DB::sub;

[download]
How can I get this list without the debugger module?

Thanks very much, hexcoder

In reply to getting a list of all subclasses of base class x by hexcoder

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