From: Joel VanderWerf <vjoel@...>
Date: 2008-06-03T07:48:38+09:00
Subject: Re: The duck's backside

David Masover wrote:
> Give me an example of a class that isn't a category.
> 
> It might not be a category as far as your program logic is concerned, but it's 
> certainly a category of some kind. NilClass is a category of objects for whom 
> #nil? returns true, for example.

class MyNil
   def nil?
     true
   end
end

p MyNil.new.nil?

-- 
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407