From: pat eyler <pat.eyler@...>
Date: 2010-11-19T13:17:36+09:00
Subject: Re: Descending ranges in Ruby

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5.downto(1) { |i| puts i }
5
4
3
2
1


On Thu, Nov 18, 2010 at 9:01 PM, Harry Spier <harryspier@hotmail.com> wrote:

> Dear list members,
>
> (5..1).to_a #returns []
> (1..5).to_a #returns [1,2,3,4,5]
> (5..1).each{|x| puts x} #prints (-5..-1)
> (1..5).each{|x| puts x} #prints
> 1
> 2
> 3
> 4
> 5
>
> I don't get an error message when I declare a descending Range or when I
> apply an iterator method to it, but I'm not able to iterate over a
> descending Range the same way I can an ascending Range.  Can someone
> explain what the rationale is behind that language restriction?
>
> Thanks,
> Harry
>
> --
> Posted via http://www.ruby-forum.com/.
>
>


-- 
thanks,
-pate
-------------------------
 Don't judge those who choose to sin differently than you do

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