From: Mason Kelsey <masonkelsey@...>
Date: 2009-09-07T12:11:18+09:00
Subject: Two Dimensional Arrays in Ruby?

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No doubt this question has been asked before but I cannot find it and it is
not documented in three Ruby books I've checked, which is very strange as
two dimensional arrays are a common need in programming.

How does one define and use a two dimensional array in Ruby?

I tried
anarray = [[1, 2, 3], [4, 5, 6] [7, 8, 9]]
with
puts anarray[1][1]
does not deliver the 5 that I would expect but instead, provides (in SciTE)
the error message on the line defining the array:
>ruby test_2_dimensional_array.rb
test_2_dimensional_array.rb:1:in `[]': wrong number of arguments (3 for 2)
(ArgumentError)
 from test_2_dimensional_array.rb:1
>Exit code: 1

So what is the secret for working with two dimensional arrays in Ruby?  And
is it documented somewhere?

Thanks in advance!

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