From: Alan Gutierrez <alan@...>
Date: 2010-07-24T06:30:10+09:00
Subject: Re: Determining the Source File of a Class

Ryan Davis wrote:
> On Jul 23, 2010, at 13:40 , Alan Gutierrez wrote:
> 
>> I'm trying to debug a bug where I seem to have a class that has two defintions, the one I know of, and another one, somewhere, the one I'm getting when I attempt to use the class.
>>
>> Given a class, is there a way to get name of the file in which it was defined?
>>
>> MyClass.defintion_file
>>
>> Something like that?
> 
> Classes in ruby are "open", which means that they can be extended at any time. So there isn't really a "definition" (at least, for a single location) of a given class.

Thank you. That answers my question.

> You also have the case where something isn't opened to have stuff added to it, but instead it can be extended by modules instead.
> 
> If you want, you can play with the reflective hooks in Module: method_added, included, extended, etc.

Sounds like fire hose, but I'm sure there's a clever Ruby way to control 
the torrent.

Fortunately, I seem to have found the other definition that is being 
invoked using `find` and `grep`.

-- 
Alan Gutierrez - alan@blogometer.com - http://twitter.com/bigeasy