module Debug def whoAmI? puts "#{self.class.name} " + "(\##{self.object_id}): #{self.to_s}" end end module Sample class Apfel include Debug end class Birne include Debug end def Sample.hallo puts "Modul-Methode hallo aufgerufen!" end end Sample::Apfel.new.whoAmI? Sample::Birne.new.whoAmI? Sample.hallo
Sample::Apfel (#537783840): #<Sample::Apfel:0x401bdc40> Sample::Birne (#537783690): #<Sample::Birne:0x401bdb14> Modul-Methode hallo aufgerufen!