From: Brian Candler <B.Candler@...>
Date: 2003-02-12T05:58:00+09:00
Subject: Re: Range#length?

On Wed, Feb 12, 2003 at 03:50:10AM +0900, Florian Frank wrote:
> On 2003-02-12 03:12:19 +0900, Yukihiro Matsumoto wrote:
> > Do you think of a good name for it?  I'm glad to add a method if
> > you have a good name.
> 
> It doesn't seem to work for general ranges:
> 
> r = "a".."z"
>     ==>"a".."z"
> r.last - (r. exclude_end? ? 1 : 0)
> NoMethodError: undefined method `-' for "z":String
>         from (irb):4

"y".succ  >>  "z"

But I'm darned if I can find the method with does the opposite!

Regards,

Brian.