From: "Simon Kröger" <SimonKroeger@...>
Date: 2006-10-09T21:09:58+09:00
Subject: Re: Removing Duplicate Objects from Object List

Daniel N wrote:

> If instead of declaring your @rules as an array, you declare it as a set
> you
> will get no duplicates for free (I think)

yes but you will loose order (if that is important)

> However,  you need to incorporate the <=> operator in your Rule class to
> tell ruby how your objects relate to each other.
> ie are they  <, >, or =

That won't do the trick for uniq as uniq is using a hash internally do
find duplicates. You have to define #hash and #eql? for this to work.
(or was it #hash and #== ?)

cheers

Simon