in reply to Detecting which class a method is defined in

Try to put this into your class A:
use Class::ISA; sub method_class { my ($self, $method_name) = @_; my $coderef; my $class; foreach (Class::ISA::self_and_super_path(ref($self)||$self)) { my $coderef_cur = $_->can($method_name); last unless defined $coderef_cur; last if defined $coderef and $coderef ne $coderef_cur; $coderef = $coderef_cur; $class = $_; } return $class; } is not very tested, and I am not sure about autoloading, but I suppose this is what you seek. BUT, remember Merlyn's words, class would never care about method actually launched. Update: I did not tested multiple inheritance.