From: Paul <Paul.McArdles@...>
Date: 2008-04-15T16:05:06+09:00
Subject: Re: noob 'why doesn't this work' question

irb(main):001:0> a = [0,1,2,3,4,5,6]
=> [0, 1, 2, 3, 4, 5, 6]
irb(main):002:0> b = [3,4,6]
=> [3, 4, 6]
irb(main):003:0> c = a - b
=> [0, 1, 2, 5]
irb(main):004:0>