From: Su Zhang <su.comp.lang.ruby@...>
Date: 2011-12-03T02:54:43+09:00
Subject: Re: Inverse Operation of Module#include

On 12/2/2011 2:51 AM, Yong Li wrote:
> BTW, what do you want to achieve, switch interface at run-time or
> switch implementation at run-time?
>

The latter. In my example code the interface `foo' is not changed but 
there exists several implementations.