From: "David A. Black" <dblack@...>
Date: 2005-01-21T22:11:55+09:00
Subject: Re: Protected instance variables

Hi --

On Fri, 21 Jan 2005, Mystifier wrote:

> Hi,
>
> I read somewhere @_ will be used to represent protected instance variables.
> What will be the scope of it.

My understanding is that they'll be module/class-scoped:

   module M
     def a
       @_var = 1
     end
   end

   class C
     include M
     def b
       puts @_var
     end
   end

   c = C.new
   c.a
   c.b       # nil

I could be getting it wrong, though.

Also I believe that Matz hasn't decided whether it will be @_var or
@var.  If the latter, then @_var would be for non-protected ones.  My
hatred of extra punctuation is such that I would rather see them all
behave the same way (whatever it is) and be @var.


David

-- 
David A. Black
dblack@wobblini.net