From: Dave Thomas <dave@...>
Date: 2008-09-01T12:21:56+09:00
Subject: Re: instance_eval/class_eval including/extending modules


On Aug 31, 2008, at 9:50 PM, Patrick Li wrote:

> 5)
> include myModule <-- evaluates the instructions in myModule,  
> underneath
> selfClass
>
> 6)
> extend myModule <-- evaluates the instructions in myModule, underneath
> self
>
> Does that seem correct now? Thanks for your help by the way. That's
> quite a bit more clear n

No evaluation takes place. The module is already "compiled", and Ruby  
simply links a proxy for that module in to the parent class chain for  
either the class or metaclass. That way, module functionality is  
shared between multiple classes/objects that include/extend the module.


Dave