From: Tim Becker <a2800276@...>
Date: 2007-03-04T03:14:48+09:00
Subject: Re: attr_reader explained

On 3/3/07, libsfan01 <mcyi2mr3@googlemail.com> wrote:
> can someone explain how attr_reader works?
>
> i can't find a good explanation anywhere.
>
> please help!


It's built in to the language, so it 'works' by magic for all
practical purposes, it's implemented in `object.c` if you want to take
a look at the implementation. If you wanted to implement it in Ruby,
you do something like this:

> def new_attr_reader cl, sym
>   str = "def #{sym.to_s}; @#{sym.to_s}; end"
>   cl.class_eval str
> end

>class Test; end
>new_attr_reader Test, :my_new_reader
>Test.new().my_new_reader

The built in `attr_reader` takes an array of sym's, but you get the idea.
   -tim