From: Xavier Leroy <xavier.leroy@inria.fr>
To: Stalkern 2 <stalkern2@tin.it>
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] tree walking with... specular rec functions? what else?
Date: Sun, 11 May 2003 18:02:42 +0200 [thread overview]
Message-ID: <20030511180242.A21831@pauillac.inria.fr> (raw)
In-Reply-To: <200305091156.47892.stalkern2@tin.it>; from stalkern2@tin.it on Fri, May 09, 2003 at 11:56:47AM +0200
> 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.
- Xavier Leroy
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next prev parent reply other threads:[~2003-05-11 16:02 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-09 9:56 Stalkern 2
2003-05-09 15:23 ` Brian Hurt
2003-05-12 12:57 ` John Carr
2003-05-12 13:35 ` Michal Moskal
2003-05-12 15:06 ` David Brown
2003-05-12 15:24 ` Xavier Leroy
2003-05-11 16:02 ` Xavier Leroy [this message]
2003-05-12 6:55 ` Stalkern 2
2003-05-12 10:14 ` Gérard Huet
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