From: Ross Bamford <rossrt@...>
Date: 2006-03-25T00:07:01+09:00
Subject: Re: iterator class not working

On Fri, 2006-03-24 at 23:43 +0900, Robert Dober wrote:
> 
> Well I got it!
> Was I missing something or is my solution really better?

Well, if you're going to cheat and use return ... :)

Seriously though, I like that one. Shows how it's important to remember
the 'normal' stuff when you're thinking in this high level stuff :)

And yes, I guess it is better:

      user     system      total        real
Iterator1  4.730000   0.040000   4.770000 (  4.877037)
Iterator2  2.840000   0.050000   2.890000 (  2.960747)
Iterator3  2.800000   0.130000   2.930000 (  2.998121)
Iterator4  2.040000   0.020000   2.060000 (  2.131763)

(1 = my updated, easy to follow version of Peter's original, 2 = same
version with one callcc and one catch, 3 = Peter's second
implementation, 4 = your callcc/return implementation)

As you can see, though, they're all pretty slow when it comes right down
to it (this was only over (0...50000).to_a) - some of the
FasterGenerator quiz entries I mentioned achieved quite amazing speeds
over that many iterations and more - you should check them out.

-- 
Ross Bamford - rosco@roscopeco.REMOVE.co.uk