From: nobu.nokada@...
Date: 2002-03-14T02:17:17+09:00
Subject: Re: key comparision inside Hash

Hi,

At Wed, 13 Mar 2002 22:27:06 +0900,
Vladimir Dozen wrote:
>    def <=> (another)
>      @a <=> another.a || @b <=> another.b
>    end

This may not work as you want.  Generally <=> method returns,
-1, 1 or 0, not nil.  You need to write as:

   def <=> (another)
     (@a <=> another.a).nonzero? || @b <=> another.b
   end

-- 
Nobu Nakada