From: Markus Roberts <Markus@...>
Date: 2009-12-01T04:39:48+09:00
Subject: Re: How does ActiveRecord do it?

>
> The question I was trying to ask was ...
>
> What _Ruby_ facility does Rails use to reload the class?
>


As a rough answer, Kernel#load and the various const-introspection  
methods (to remove the old class first).

The great thing about open source is that if you'd like a more  
detailed answer you can just go look at the code and see for yourself.

-- Markus