From: "Skye Shaw!@#$" <skye.shaw@...>
Date: 2009-06-24T02:10:33+09:00
Subject: Re: Is it the ruby way to implement #downto

On Jun 23, 8:36 am, Li Chen <chen_...@yahoo.com> wrote:
> Hi all,
>
> I wonder if the following code is the ruby way to implement
> Integer#downto.
> #######################
> class Integer
>   def my_downto(final=2)
>     for i in (final..self).to_a.reverse
>       yield i
>       end
>    end
>  end
>
>  10.my_downto(-1) do |i| puts i end

Well, I'd hope that creating 3 unnecessary objects wouldn't be deemed
the Ruby way :^)
Most code I've seen would use each() instead of for i in (). Each is
faster anyways.

Why not use the bastardized C way:

class Integer
   def my_downto(final=2)
     i = self
     while i >= final
      yield i
      i-=1
     end
   end
 end

I don't believe the Ruby community has shunned the idea of writing C
in ruby have they?

-Skye