From: Bertram Scharpf <lists@...>
Date: 2007-05-19T08:49:52+09:00
Subject: Re: quick question about @ and @@

Hi,

Am Freitag, 18. Mai 2007, 01:20:26 +0900 schrieb Mike Steiner:
> What's the difference between @ and @@?

  class C
    @a, @@a  = 3, 33

    def set_a x, y ; @a, @@a = x, y ; end

    def dump      ; puts "#@a, #@@a" ; end
    def self.dump ; puts "#@a, #@@a" ; end
  end

  C.dump
  puts

  c = C.new
  d = C.new

  c.set_a 7, 77
  d.set_a 8, 88

  c.dump
  d.dump
  C.dump


The output is:

  3, 33

  7, 88
  8, 88
  3, 88


Bertram


-- 
Bertram Scharpf
Stuttgart, Deutschland/Germany
http://www.bertram-scharpf.de