A really cool piece of code I read today in the book Ruby on Rails: Up and Running.
class Talker def method_missing(method) if method.to_s =~ /say_/ puts $' end end end t = Talker.new t.say_hello t.say_something t.say_goodbye
$ ruby Talker.rb
But why do that when we have parameters? Because you can do some methods really dynamic with a clear semantic, just looking for them you know are they are doing.