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; }