From: Mystifier <mystifier@...>
Date: 2005-01-21T22:33:56+09:00
Subject: Re: Protected instance variables

By going with C++ convention, currently @vars are protected, new ones will
be private. Right?

Mystifier

-----Original Message-----
From: dblack@wobblini [mailto:dblack@wobblini] On Behalf Of David A. Black
Sent: Friday, January 21, 2005 6:42 PM
To: ruby-talk ML
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