From: Austin Ziegler <austin@...>
Date: 2003-04-03T11:22:54+09:00
Subject: Re: [ANN] Uninheritable 1.0

On Thu, 3 Apr 2003 07:15:33 +0900, Mauricio Fern�ndez wrote:
> On Thu, Apr 03, 2003 at 05:00:14AM +0900, Austin Ziegler wrote:
>> Uninheritable provides a simple way to make a class uninheritable
>> (unable to be subclassed from). While the technique to do this is
>> not difficult, neither is it immediately obvious, and there is no
>> standard exception for this.
> Is it like that?
> module Uninheritable
>   def inherited(klass)
>     raise TypeError
>   end
> end

Mostly. It's:

  module Uninheritable
    def inherited(klass)
      raise TypeError, "Class #{self} is unable to be subclassed."
    end
  end

Like I said, it's very simple. But it's something that I need for
the PDF library that I'm working on.

-austin
-- Austin Ziegler, austin@halostatue.ca on 2003.04.02 at 21:18:43