zipper: Generic zipper for families of recursive datatypes

[ bsd3, generics, library ] [ Propose Tags ]

The Zipper is a data structure that allows typed navigation on a value. It maintains a subterm as a current point of focus. The rest of the value is the context. Focus and context are automatically updated when navigating up, down, left or right in the value. The term that is in focus can also be modified.

This library offers a generic Zipper for families of datatypes. In particular, it is possible to move the focus between subterms of different types, in an entirely type-safe way. This library is built on top of the multirec library, so all that is required to get a Zipper for a datatype family is to instantiate the multirec library for that family.

Versions 0.1, 0.2, 0.3, 0.3.1, 0.4, 0.4.1, 0.4.2
Dependencies base (>=3 && <5), multirec (==0.4.*) [details]
License BSD-3-Clause
Author Alexey Rodriguez, Stefan Holdermans, Andres Löh, Johan Jeuring
Maintainer generics@haskell.org
Category Generics
Home page http://www.cs.uu.nl/wiki/GenericProgramming/Multirec
Uploaded by AndresLoeh at Fri Jun 12 09:46:59 UTC 2009
Distributions NixOS:0.4.2
Downloads 2565 total (29 in the last 30 days)
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