On Tue, Oct 20, 2009 at 1:14 PM, Jian Lin <blueskybreeze / gmail.com> wrote:
> for i = 35 to 1 step -1

hmm if you modify the step var, the block would not loop 35 times, wc
you ask in your op

>  ¨Âóïíåôèéî> next

yours was a special case, so i was thinking something like,

> class Fixnum
>   def countdown_by decrement = 1
>     x = self
>     x.times do |y|
>       yield(x - decrement*y)
>     end
>   end
> end
>
> 5.countdown_by {|x| puts x}
5
4
3
2
1
=> 5

> 5.countdown_by(2) {|x| puts x}
5
3
1
-1
-3
=> 5

kind regards -botp