From: "Iñaki Baz Castillo" <ibc@...>
Date: 2008-05-20T00:16:55+09:00
Subject: Re: How to use a class_variable into a Module

2008/5/19, Heesob Park <phasis@gmail.com>:
> Here is a working code:
>
>  module M
>       @@class_var = nil
>       def kk
>
>               puts @@class_var
>       end
>  end
>
>  class A
>       include M
>       @@class_var = "kaka1"
>  end


Hi, sorry but that is not valid (at least in my case). If you include
M module in more clases, each one with its own @@class_var, then
@@class_var will be shared between them that it's not the expected
behaviour:

------------------------------
module M
	@@class_var = nil
	
	def kk
		puts @@class_var
	end
end

class A
	include M
	@@class_var = "@@ A"
end

class B
	include M
	@@class_var = "@@ B"
end
------------------------------

a=A.new
a.kk
=> @@ B
(it's should be "@@ A" )

-- 
Iñaki Baz Castillo
<ibc@aliax.net>