From: "trans.  (T. Onoma)" <transami@...>
Date: 2005-01-17T23:10:53+09:00
Subject: Re: Fwd: [suby-ruby] Your all time desired fundemental Ruby mod

On Monday 17 January 2005 08:20 am, David A. Black wrote:
| Hi --
|
| On Mon, 17 Jan 2005, trans.  (T. Onoma) wrote:
| > I generally agree with you. I wonder if @@vars could just become somesort
| > of across the board initializer/accessor for instance vars (ie. @vars).
| >
| >  class C
| >    @@a = 10
| >    def a; @a; end
| >  end
| >  C.new.a  #=> 10
|
| Here you've got one object assigning to another object's instance
| variables, which is not good.

Except that class vars already do so in a sense in that they are accessable 
from both the class level and the instance level. But even so, that's not 
really what I meant. I'm actually with you on deprecating class vars, and was 
instead considering a completely alternate use for @@ notation to mean 
"default value of instance vars". This would address the issue in my other 
post about initialization of module's instance vars too, i.e.

  module M
    @@a = 10
    def a; @a; end
  end

  class C
    include M
  end

  C.new.a  #=> 10   

But maybe you already understood this and still find it not good?

T.