sub isa_descent { my $self = shift @_; my ($class) = @_; print "\npackage: $class\n"; no strict 'refs'; my @ancestors = @{ 'main::' . $class . '::ISA' }; use strict; foreach my $ancestor ( @ancestors ) { print "...ancestor: $ancestor\n"; $self->isa_descent($ancestor); } } #### $o->isa_descent(ref $o);