From: David Springer <dnspringer@...>
Date: 2010-03-06T04:56:29+09:00
Subject: Re: Different behavior of '$,' output separator in Ruby 1.9

Alex,

If you make a few minor modifications:
-------------------------------------------
$, = ', '
$\ = "\n" ### output record separator ###

data = [['a', 'b', 'c'], ['1', '2', '3'], ['x', 'y', 'z']]

file_out = File.new("test.csv", "w")

data.each do |elem|
  file_out.print elem[0], elem[1], elem[2] ### no newline FIELD ###
end

file_out.close
-------------------------------------------

then you will get what you want in Ruby 1.9.
a, b, c,
1, 2, 3,
x, y, z,
I have not tried it in Ruby 1.8.

Looks like it is adding the output field separator AFTER the newline 
FIELD.

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