From: sto.mar@...
Date: 2013-07-14T01:39:23+09:00
Subject: Re: Module Confusion

Am 13.07.2013 17:48, schrieb Michael W.:
> The below code works.  Question though.  How does add_to_stack acess the
> @stack instance variable going through the method stack?  In this case
> is stack variable looked at as literally the array?
>
> Thanks!  Michael the Ruby Newby:)
>
> ------------
>
> module Stacklike
>
>    def stack
>      @stack ||=[]
>    end
>
>    def add_to_stack(obj)
>      stack.push(obj)
>    end
>
> end
>
> class Stack
>    include Stacklike
> end
>
> s = Stack.new
>
> s.add_to_stack("item one")
> s.add_to_stack("item two")
>
> puts s.stack

I'm confused about your confusion.

The #stack method simply returns the @stack array (by reference),
and push modifies it...

Regards,
Marcus


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