From: Calvin Bornhofen <calvin.bornhofen@...>
Date: 2013-02-28T07:44:57+09:00
Subject: Re: can we modify the method defination once it is defined inside a class?

Hello Xavier,

yes, it is possible. There are three options you have, depending on what 
you want:
  - Inheritance: Overwrite the method show in a subclass and then call 
super (if you need the new behavior independently of the old behavior)
  - Alias the old method show to something like "old_show" and then 
redefine show (if you want to call the old method); alias_method and 
alias are the tools for that
  - Just redefine the method (if you don't need the old method)

Kind regards,

Calvin