The DeepArrow package

[Tags: bsd3, library]

This library provides a framework for type-directed composition of value editors (non-syntactic transformations). The tools enable "deep function application" in two senses: deep application of functions and application of deep functions. These tools generalize beyond values and functions, via the DeepArrow subclass of the Arrow type class.

For more information see:

This page and the module documentation pages have links to colorized source code and to wiki pages where you can read and contribute /user comments/. Enjoy!

The primary module is Control.Arrow.DeepArrow. Examples in Control.Arrow.DeepArrow.Examples.

Note: Many of the type signatures use infix type operators (as in a~>b), a recent extension to GHC. In reading the documentation and code, be aware that infix operators bind more tightly than ->.

© 2007 by Conal Elliott (; BSD3 license.

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Versions0.0, 0.0.1, 0.2, 0.3.2, 0.3.3, 0.3.4, 0.3.5, 0.3.7, 0.4.0
Change logCHANGES
Dependenciesbase (<5), haskell-src, mtl, TypeCompose (>=0.6.5) [details]
Copyright(c) 2007,2009 by Conal Elliott
AuthorConal Elliott <>
CategoryCombinators, Control
Home page
UploadedFri Oct 2 20:13:49 UTC 2009 by ConalElliott
Downloads2480 total (28 in last 30 days)
0 []
StatusDocs uploaded by user
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Maintainers' corner

For package maintainers and hackage trustees

Readme for DeepArrow-0.3.2

The DeepArrow library provides a framework for type-directed composition
of value editors.  For a fuller description and link to documentation,
please see the Haskell wiki page:

You can configure, build, and install all in the usual way with Cabal

  runhaskell Setup.lhs configure
  runhaskell Setup.lhs build
  runhaskell Setup.lhs install

See src/Control/Arrow/DeepArrow/Examples.hs for examples.