From: Robert Dober <robert.dober@...>
Date: 2006-03-25T00:23:40+09:00
Subject: Re: iterator class not working

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On 3/24/06, Ross Bamford <rossrt@roscopeco.co.uk> wrote:
>
> 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 =3D my updated, easy to follow version of Peter's original, 2 =3D same
> version with one callcc and one catch, 3 =3D Peter's second
> implementation, 4 =3D 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
>
>
> I have no merit than ;), no it is true that I have not understood a bit o=
f
your continuation stuff, when I realized what callcc really does, I realize=
d
that I was wrong about the coroutines.
Ty for the acknowledgement but I learnt it from your code!
Cheers


--
Deux choses sont infinies : l'univers et la b=EAtise humaine ; en ce qui
concerne l'univers, je n'en ai pas acquis la certitude absolue.

- Albert Einstein

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