From: Nicko <anko.com@...>
Date: 2007-06-10T16:30:12+09:00
Subject: Overloading Array Subtraction operator

Hi,

I have two arrays of hashes, and I'd like to subtract them to find the
difference elements between them eg.

-----------
array1 = Array.new
array2 = Array.new

tmp = {:name => "fred", :phone => "545334"}
array1.push(tmp)
tmp2 = tmp1.dup

array2.push(tmp2)
tmp3 =  {:name => "stan", :phone => "hehe"}
array1.push(tmp3)

arraydiff = array1 - array2
--------------

What methods would I have to overload to accomplish this task?  I
could not find an example like this anywhere!

Nicko