From: Dick Davies <rasputnik@...>
Date: 2004-04-15T06:26:22+09:00
Subject: Re: Interesting Scoping Rules

* Dan Doel <djd15@po.cwru.edu> [0423 20:23]:
 
> This example, at least, makes sense to me.
> 
> class A
> 	@a = "me"  # self is the Class object A
> 	class B
> 		puts @a  # self is the class object A::B
> 	end
> end
> 
> Instance variables are local to the object, and A and A::B aren't the same
> object, so why should A::B see the instance variables of A? Similarly:
> 
> class A
> 	@a = "me" # self is the Class object A
> 	class B
> 		@a = "me2" # self is the Class object A::B
> 		def t
> 			puts @a # self is an instance of A::B
> 		end
> 	end
> end
> 
> All of those @a's belong to different objects, so it's not so surprising that
> they aren't all the same variable.  I could see how this would be a little
> confusing thinking from a Java inner-class perspective, but instance
> variables in Ruby are object based rather than lexically based.

Can I just throw in a link to http://www.visibleworkings.com/little-ruby/
- if I'd read Chapter 2 this morning instead of this afternoon, I wouldn't
have been so vague....
-- 
If life is a stage, I want some better lighting.
Rasputin :: Jack of All Trades - Master of Nuns