From: ole __ <oliver.saunders@...>
Date: 2008-01-04T09:14:33+09:00
Subject: Re: "wrong number of arguments" What? I must be thick or somethi

> Yes, but he hadn't gotten to that point yet.

Right. And I only posted a cut down version of the code. NilObject is 
defined in the full version.

>   @nested = nested || NilObject.new
> 
> won't work, and is probably unnecessary.

Interesting. Let me make certain you understand my intentions first. 
NilObject looks like this:

class NilObject
    def method_missing(name, *params); end
end

It just swallows messages. It is an implementation of the Introduce Null 
Object refactor 
http://www.refactoring.com/catalog/introduceNullObject.html This means 
that I don't have to continuously repeat checks for nil. It's explained 
a bit better here 
http://www.industriallogic.com/xp/refactoring/nullObject.html

This is a concept that has come straight out of Java so I'm interested 
if there is a more ruby way of doing such things.
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