From: Joel VanderWerf <vjoel@...>
Date: 2004-04-19T06:41:11+09:00
Subject: Re: How do I insert into an array?

Joel VanderWerf wrote:
> Sam Roberts wrote:
> 
>> I want to add an item just before the end:

...

> Another way is to use ranges:
> 
> irb(main):009:0> a = [1,2,3]
> => [1, 2, 3]
> irb(main):010:0> a[2...2] = "second last"

Oops. Unless you want to calculate the length yourself, you're better 
off with:

                    a[-1...-1] = "second last"