On Sun, Oct 7, 2012 at 11:34 AM, Patrick Useldinger
<uselpa.l...@gmail.com> wrote:
> Hi,
>
> following up on my earlier thread (sep 16th) on the same subject, I tried to
> compare some solutions generating fibonacci series in a lazy way: via a
> closure, via generators and using delay/force.
Hmmm! Looking at it now... Wait: your definition of fibo-gen2 is not
exactly equivalent to the others in terms of work when verbose is off.
Change your definition to:
;;;;;;
(define (run-fibo-gen2 count verbose)
(printf "fibo-gen2 : ")
(for ( [i (in-range count)] )
(define next-val (fibo-gen))
(when verbose (printf "~a " next-val)))
(when verbose (printf "\n")))
;;;;;;
Otherwise, the third version doesn't even touch the sequence unless
verbosity is on. How do the results compare once you make this
change?
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