From: Marcio Braga <mbraga0001@...>
Date: 2008-08-19T07:38:39+09:00
Subject: Re: Matrix: Need help to understand this behavior

> It's a Matrix, right? (some of this stolen from a previous thread)...
> 
> require 'matrix'
> class Matrix
>   def []=(i, j, n)
>     @rows[i][j] = n
>   end
> end
> 
> m = Matrix[['a', 'b'], ['c', 'd']]
> k = m.clone
> k[0, 0] = 'e'
> puts k.to_a
> puts m.to_a
> 
> Todd

At first I was not considering to handle them using Matrix class (just 
Array class) but thank you to call attention to this clone method of 
Matrix.

Marcio
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