From: James Edward Gray II <james@...>
Date: 2006-05-03T01:54:19+09:00
Subject: Re: Mixin Syntax for Newbies

On May 2, 2006, at 11:40 AM, Nathan Olberding wrote:

> I'm trying to start using mixins and I'm having a little syntactual
> trouble, if that's a word.
>
> Here's my test code:
>
> ---------------
> module One
>         @one = "One!"
>         attr_reader :one
> end
>
> class Two
>         include One
>         def initialize
>                 puts @one
>         end
> end
>
> this = Two.new
> ----------------
>
> I have tried several variations on this, but Two.one always seems to
> come out as "nil". Is it possible to set it to "One!" by default?

 >> module One
 >>   attr_writer :one
 >>   def one
 >>     @one || "One!"
 >>   end
 >> end
=> nil
 >> class Two
 >>   include One
 >>   def initialize
 >>     puts one
 >>   end
 >> end
=> nil
 >> Two.new
One!
=> #<Two:0x328384>

Hope that helps.

James Edward Gray II