From: Steve Klabnik <steve@...>
Date: 2009-12-24T11:47:09+09:00
Subject: Re: why this works not right

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1..10 is a range, while [1..10] is an array with one element, a range from
1..10. You can think of 1..10 as (1..10) and [1..10] as [(1..10)]

I am 95% sure that this is correct, someone please correct me if I'm wrong.
irb seems to support this:

 > def one_to_ten
>  1..10
>  end
 => nil
> one_to_ten.class
 => Range
> [1..10].class
 => Array

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