From: David Heinemeier Hansson <david@...>
Date: 2004-01-25T20:31:44+09:00
Subject: Re: Constant inheritance

> You could just use a class variable (e.g. @@x) instead, the downside 
> being that it *would* be variable rather than constant.

Right. The problem is that this really is a constant. The previous 
example was a bit abstract. This should be more telling of my 
intentions:

class Subscription # abstract
     def price_with_discount
	    PRICE * 0.9
     end
end

class BasicSubscription < Subscription
     PRICE = 19
end

class PlusSubscription < Subscription
     PRICE = 49
end

...but perhaps you're right. A class variable would probably suffice.
--
David Heinemeier Hansson.
http://www.loudthinking.com/ -- Broadcasting Brain