From: Jamis Buck <jamis_buck@...>
Date: 2004-11-29T13:43:56+09:00
Subject: Re: What is Ruby for "pimpl"?

John Carter wrote:
> A useful dependency cutting tool in C++ is the pimpl idiom.
>   http://www.gotw.ca/gotw/024.htm
> 
> I trying to imagine a ruby translation of the idiom.
> 
> Dependency Injection?

Well, there isn't really a "compile" phase for Ruby, so changing any 
interface of any class never requires a recompile. As long as the change 
only affects non-published interfaces of the class, the clients of the 
class will continue unaffected, blissfully ignorant of your refactoring.

Dependency injection solves a different set of problems than the pimpl 
idiom (which is really only necessary for C++).

Does that come close to answering your question? Let me know if I've got 
wide of the mark.

- Jamis

-- 
Jamis Buck
jgb3@email.byu.edu
http://www.jamisbuck.org/jamis