From: Hal Fulton <hal9000@...>
Date: 2003-11-12T07:09:30+09:00
Subject: Re: Array#slice oddity...

Matthew Berg wrote:
> Another thing I noticed is that this behaviour is only exhibited if the
> start index is 0:
> 
>   irb(main):004:0> a[0,1]
>   => []
>   irb(main):005:0> a[1,2]
>   => nil
> 
> The same thing happens with ranges:
> 
>   irb(main):006:0> a[0..1]
>   => []
>   irb(main):007:0> a[1..2]
>   => nil

I think it depends on how far off the end of the
array you go.

x = [1,2,3]
x[3,3]        # []
x[4,4]        # nil

There's a kind of logic to it, but it requires long and
hard thought (for me, anyway). Search the archives.

Hal