From: Joel Pearson <lists@...>
Date: 2013-02-01T00:45:48+09:00
Subject: Re: Select "columns" from multidimensional array?

Looks like good advice, both. My concern with matrices is being able to 
modify elements in the same way as I could in in a multidimensional 
array, but I assume that's the reason for creating a child class.
There's a whole thread full of people waxing philosophical about the 
subject!

I've never written a class based on someone else's before, sounds like 
fun. I'll see what happens when I play with it a bit.

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