From: Eleanor McHugh <eleanor@...>
Date: 2009-05-09T08:47:01+09:00
Subject: Re: ruby string slice/[] w/ range, weird end behavior

On 9 May 2009, at 00:39, Sebastian Hungerecker wrote:
> Am Samstag 09 Mai 2009 01:32:06 schrieb Eleanor McHugh:
>> "foo"[3..3]                     => nil
>
> You sure? I get "", same as the op. If it would return nil, I don't  
> think the
> op would have asked his question.

Sorry, typo on my part (I'm not having a good week for these it  
seems). The point I was trying to make was that

"foo"[3..3]			=> ""

is a thoroughly valid range, but I guess that would have been clearer  
with a fuller explanation. Consider

"foo"[2..3]			=> "o"

index [3] is actually the end of the string so whilst the range  
accesses the string after any characters in it, it's still accessing  
the string in a valid range.


Ellie

Eleanor McHugh
Games With Brains
http://slides.games-with-brains.net
----
raise ArgumentError unless @reality.responds_to? :reason