From: "Richard D." <lists@...>
Date: 2012-10-03T00:35:35+09:00
Subject: Re: how to read arrary with an array

after some experimenting, I understand but still have a bit of fog.
Basically, the idea was to see how data would be pulled from slight
different arrays.  But I'm getting two completely different results.  I
was expecting to be the same, except my "=====" break to tell the
different outputs.

program 1
--------------------------------------------------------------------
array1 = [['a','b'],[1, 2],['x','y']]
array2 = ['a',[1,2],'x']

array1.each do |ray|
  test1 = ray[0]
  puts test1
end
puts '======='

array1.each do |ray|
  test2 = ray[1]
  puts test2
end
puts '======='
array2.each do |ray2|
  test3 = ray2[0]
  puts test3
end
puts '====='
array2.each do |ray2|
  test4 = ray2[1]
  puts test4
end
puts '====='
puts array1[0].to_s + ' ' + array2[0].to_s
puts
puts array1[1].to_s + ' ' + array2[1].to_s
puts
puts array1[2].to_s + ' ' + array2[2].to_s

OUTPUT
a
1
x
====
b
2
y
====
a
1
x
====

2

=====
["a","b"] a

[1, 2] [1, 2]

["x", "y"] x

Program 2
------------------------------------------------------------------
{same as above, excpet)
array1.each do |ray|
  test1 = ray[0]
  test2 = ray[1]
  puts test1
  puts '****'
  puts test2
end
puts '======='
array2.each do |ray2|
  test3 = ray2[0]
  test4 = ray2[1]
  puts test3
  puts '****'
  puts test4
end

OUTPUT
a
****
b
1
****
2
x
****
y
=====
a
****

1
****
2
x
****

======
["a","b"] a

[1, 2] [1, 2]

["x", "y"] x

So I think I got what the arrays do.  I just don't think I'm
understanding how things are being located.  What I"m thinking is this
array1 = [['a','b'],[1, 2],['x','y']]
array1: a is slot0-0, b is slot0-1, 1 is slot1-0, 2 is slot 1-1, x is
slot2-0, and y is slot 2-1
array2 = ['a',[1,2],'x']
a is slot1-0-0, 1 is 1-0, 2 is 1-1, and x is 2-0

I thought in both programs the ray(x)[0] would output all x-0 slots, and
ray(x)[1] would out put all -1 slots

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