From: Johannes Friestad <johannes.friestad@...>
Date: 2005-12-07T14:06:39+09:00
Subject: Mixins and variables

Hi,
I'm new to Ruby, and trying to figure out how the inheritance/mixin works:
I can't figure out how to set an instance variable with a mixin method
from the object's initialize().

Example:
-----------------
module TestMod
  def x
    @x
  end
  def x=(arg)
    @x=arg
  end
end

class TestClass
  include TestMod
  def initialize
    x=('alpha')
    printf("x=%s\n", x)
  end
end

irb(main)..>tmp=TestClass.new
x=alpha               # x is set inside constructor
=> #<TestClass:0x37d9520>
irb(main)..>tmp.x
=> nil                 # x is unset on the returned object
-----------------

Does anyone know why it doesn't work? What can I do instead?

--
Johannes Friestad
johannes.friestad@gmail.com