From: David Alan Black <dblack@...>
Date: 2001-01-07T02:08:38+09:00
Subject: [ruby-talk:8746] Re: (start..end) where start > end

On Sun, 7 Jan 2001, Robert Gustavsson wrote:

> Hi!
> 
> Is there any reason why Ruby can't handle a "backwards" range?

Oh thou of little faith! :-)

> Example
> ---------
> num = 240
> (7..0).each do
>   |bitindex|
>   print num[bitindex]
> end
> print "\n"
> ---------

Try this:

   7.downto(0) do |n| puts n end

or this:

   (0..7).to_a.reverse.each do |n| puts n end

and probably other idioms....


David

-- 
David Alan Black
home: dblack@candle.superlink.net
work: blackdav@shu.edu
Web:  http://pirate.shu.edu/~blackdav