The pez package

PEZ is a generic zipper library. It uses lenses from the fclabels package to reference a "location" to move to in the zipper. The zipper is restricted to types in the Typeable class, allowing the user to "move up" through complex data structures such as mutually-recursive types.

Both the Typeable class and fclabels lenses can be derived in GHC, making it easy for the programmer to use a zipper with a minimum of boilerplate.

Please send any feature requests or bug reports along.

Changes 0.0.4 -> 0.1.0:

  - use fclabels 1.0
  - module renamed Data.Label.Zipper
  - 'ZPath' renamed 'Motion', define new Up type and instance
  - fclabels lenses now require wrapping with 'to'
  - 'moveTo' changed to 'move'
  - savedLens renamed flatten
  - SavedPath renamed To
  - removed experimental operators
  - using failure package for exceptions
  - etc., etc.

Properties

Versions	0.0.1, 0.0.2, 0.0.3, 0.0.4, 0.1.0
Dependencies	base (4.), failure (≥0.1), fclabels (≥1.0 & <1.2), thrist (0.2.)
License	BSD3
Copyright	Brandon Simmons, 2011
Author	Brandon Simmons
Maintainer	brandon.m.simmons@gmail.com
Stability	Experimental
Category	Data
Home page	http://brandon.si/code/pez-zipper-library-released/
Source repository	git clone https://github.com/jberryman/pez.git
Upload date	Sat Jan 28 03:50:40 UTC 2012
Uploaded by	BrandonSimmons
Built on	ghc-7.2

Modules

Data
- Label
  - Data.Label.Zipper

Downloads

pez-0.1.0.tar.gz (Cabal source package)
package description (included in the package)