From: Robert Dober <robert.dober@...>
Date: 2007-06-06T17:31:17+09:00
Subject: Re: code problems

On 6/6/07, Rick DeNatale <rick.denatale@gmail.com> wrote:
> On 6/4/07, fREW <frioux@gmail.com> wrote:
> > Also, can someone explain the
> > difference between closures and continuations?  I thought they were
> > the same thing.
>
> http://talklikeaduck.denhaven2.com/articles/2007/06/05/closing-in-on-closures-and-jumping-into-continuations
>
> --
> Rick DeNatale
>
>
Hi Rick I am still struggeling with continuations :(, as a matter of
fact I hoped that they would behave as described above, but they do
not, it seems.

When I execute the code from your blog
 def continuation
   i = 0
   lola = nil
   callcc {|cc| puts "In callcc";lola = cc}
   puts "i is now #{i}"
   i += 1
   lola
   end
 cont = continuation
 # point of looping
 cont.call

http://rubyquiz.com/quiz70.html
I just get an endless loop, do you have an explanation for it?


I remember there was a Ruby Quiz http://rubyquiz.com/quiz70.html with
an excellent solution of Jim Weirich.
One day I thought I understood the mechanism and optimized one callcc
away, boy I made a complete fool out of myself, you can find it on the
archives, I am not going to give the link ;).

Well, just confused...

Cheers
Robert

-- 
You see things; and you say Why?
But I dream things that never were; and I say Why not?
-- George Bernard Shaw