From: "Peña, Botp" <botp@...>
Date: 2007-07-17T16:31:00+09:00
Subject: Re: What is the fastest way to convert a object?

From: Magicloud Magiclouds [mailto:magicloud.magiclouds@gmail.com] 
# Would obj.extend(Test) work?

ah, module (instead of class) would be good for morhphing (mixin in ruby's parlance)

irb(main):003:0> module Test
irb(main):004:1>   def methodA
irb(main):005:2>     puts @var1
irb(main):006:2>   end
irb(main):007:1>   def initialize
irb(main):008:2>     @var1=0
irb(main):009:2>   end
irb(main):010:1> end
=> nil
irb(main):011:0> obj=Object.new
=> #<Object:0xb7d5dab0>
irb(main):012:0> obj.instance_variable_set(:@var1,2)
=> 2
irb(main):013:0> obj.extend Test
=> #<Object:0xb7d5dab0 @var1=2>
irb(main):021:0> obj.methods.grep /^method/
=> ["method", "methodA", "methods"]
irb(main):022:0> obj.methodA
2
=> nil

kind regards -botp