Il  Sunday 11 May 2003 18:02, Xavier Leroy ha scritto:
> > I've a simple tree structure and I want to walk it. Since in such a
> > simple tree structure I can go AFAIK only sidewards or
> > upwards/downwards, and I need to do both, I guess what can be an
> > efficent way to do so.
>
> That sounds like a job for Gérard Huet's "zippers":
>
> G. Huet. The Zipper. Journal of Functional Programming, 7 (5), Sept
> 1997, pp. 549--554.
>
> Apparently, the paper isn't freely available on-line, but see
>
> http://www.informatik.uni-bonn.de/~ralf/publications/TheWeb.ps.gz
>
> for a quick overview of the zipper, and more advanced stuff.
>

Thank you very much. I'm now using also a posting about zippers on this list 
http://caml.inria.fr/archives/200304/msg00202.html and I was suggested to 
take a look at http://pauillac.inria.fr/~remy/cours/appsem/ocaml-ml.html

Thank you

Ernesto Torresin

-------------------
To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr
Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/
Beginner's list: http://groups.yahoo.com/group/ocaml_beginners