From: Cliff Urr <cliffu@...>
Date: 2001-10-26T07:33:33+09:00
Subject: [ruby-talk:23367] Paired Arrays

I am a rank newbie - trying to learn Ruby (my 1rst language). The Ruby book
says in this example about arrays:

"You can also index arrays with a pair of numbers, [start, count]. This
returns a new array
consisting of references to count objects starting at position start.

 a = [ 1, 3, 5, 7, 9 ]
 a[1, 3] > [3, 5, 7]
 a[3, 1]  > [7]
 a[-3, 2] > [5, 7]"

I don't get why the last line above results in [5,7]  Isn't this an error,
becuase shouldn't it be:

a[-3,2] > [5,7,9]

If you count the negative number from the last one, which gets you to where
"5" is, then count up to 2 places after that, should it not include not only
7 but 9 also?

- Cliff