From: "David A. Black" <dblack@...>
Date: 2005-07-22T19:49:34+09:00
Subject: Re: Odd Array#[x..y] return values

Hi --

On Fri, 22 Jul 2005, daz wrote:

>
> Daniel Berger wrote:
>> Hi all,
>>
>> Ruby 1.8.2
>>
>> Consider:
>>
>> irb(main):001:0> a = []
>> => []
>> irb(main):002:0> a[0..1]
>> => []
>> irb(main):003:0> a[-2..-1]
>> => nil
>>
>> Why does the first return [] and the second return nil?
>>
>
>
> Archive reading:
> http://groups.google.com/groups?threadm=BAY22-F7pSWerOc0Ne000000288@hotmail.com

I'll perhaps superfluously report the results of my digging, as long
as I've done it :-)  See the ruby-talk threads starting at:

10136
24700
84973

In the first of these, Matz talks about the index pointing at an
(imaginary) edge between elements.


David

-- 
David A. Black
dblack@wobblini.net