From: Williams Williams <shaolinog@...>
Date: 2010-09-28T17:47:01+09:00
Subject: 3x3 Array of int, changing one value affects others

ruby-1.9.2-head > a = Array.new(3, Array.new(3, 0))
 => [[0, 0, 0], [0, 0, 0], [0, 0, 0]]
ruby-1.9.2-head > a[0][2] = 1
 => 1
ruby-1.9.2-head > a
 => [[0, 0, 1], [0, 0, 1], [0, 0, 1]]

If the values aren't all 0s, a[0][2] behaves correctly. Am I doing
something wrong? Thanks.
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