From: "David A. Black" <dblack@...>
Date: 2004-11-08T22:31:48+09:00
Subject: Re: Succ distance between two strings

Hi --

On Mon, 8 Nov 2004, Brian [ISO-8859-15] Schr�der wrote:

> On Sat, 6 Nov 2004 23:07:59 +0900
> "David A. Black" <dblack@wobblini.net> wrote:
> 
> > Hi --
> > 
> > On Sat, 6 Nov 2004, trans.  (T. Onoma) wrote:
> > 
> > > 
> > > Is there an efficient way to calculate the "succ distance" between two strings 
> > > (without iterating over each succession)? Examples:
> > > 
> > >   'a'..'a'    0
> > >   'a'..'b'    1
> > >   'a'..'z'    25
> > >   'a'..'aa'   26
> > 
> > 'a'...'aa'.to_a.size   # would be one way
> 
> 
> That does not work, as the ... have a very low binding. It seems a common error I made often.
> 
> bschroed@black:~ $ irb
> irb(main):001:0> 'a'...'aa'.to_a.size
> => "a"...1
> irb(main):002:0> ('a'...'aa').to_a.size
> => 26

Whoops -- I did actually do it correctly in irb, to make sure, and
then wrote it out wrongly instead of pasting it.  

It's like putting (i.e., putt-ing, in golf) -- you can never take it
for granted :-)


David

-- 
David A. Black
dblack@wobblini.net