From: Massimiliano Mirra <list@...>
Date: 2002-08-13T06:46:36+09:00
Subject: Re: ambiguity between local variable assignment and writter method

[On calling setter from inside the class]


Consider this:


class HalfDouble
  attr_reader :double, :half

  def double=(val)
    @double = val
    @half = @double / 2
  end

  def half=(val)
    @half = val
    @double = @half / 2
  end
end

hd = HalfDouble.new

hd.double = 4

p hd.half
p hd.double  


Then try to replace @double= with self.double= and @half= with
self.half= and see what happens...


Maybe I'm just being naive, but even though a one uses tongue to
translate his thought for the outside world, and ears to translate
what comes from the outside world into thought, I see nothing wrong in
using just thought for internal communication.

In other words, to me, using setters from inside the class seems a lot
like talking to oneself. :-)


Massimiliano