arrow-list: List arrows for Haskell.

[ bsd3, control, library ] [ Propose Tags ]

This small Haskell library provides some type class, types and functions to work with list (and list-like) arrows. List arrows represent computations that may return multiple outputs. Making functions that return lists an instance of both the Category and Arrow type class allow you to easily compose multiple computations into one with standard building blocks.

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Modules

[Index]

Control
- Arrow
  - Kleisli
    - Control.Arrow.Kleisli.Class
  - Control.Arrow.List
    - Control.Arrow.List.Class
  - ListLike
    - Control.Arrow.ListLike.Class
  - Control.Arrow.Sequence
- Monad
  - Control.Monad.Sequence

Downloads

arrow-list-0.7.tar.gz [browse] (Cabal source package)
Package description (as included in the package)

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Package maintainers

AdamBergmark, ErikHesselink, SebastiaanVisser

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Versions [RSS]	0.1.0, 0.2.0, 0.6, 0.6.1, 0.6.1.4, 0.6.1.5, 0.7, 0.7.1
Change log	CHANGELOG.md
Dependencies	base (>=4 && <5), containers (>=0.3 && <0.6), mtl (>=1.1 && <2.3) [details]
License	BSD-3-Clause
Author	Sebastiaan Visser
Maintainer	code@silk.co
Category	Control
Home page	https://github.com/silkapp/arrow-list
Bug tracker	https://github.com/silkapp/arrow-list/issues
Source repo	head: git clone https://github.com/silkapp/arrow-list.git
Uploaded	by AdamBergmark at 2015-01-16T15:34:08Z
Distributions
Reverse Dependencies	1 direct, 0 indirect [details]
Downloads	7479 total (28 in the last 30 days)
Rating	(no votes yet) [estimated by Bayesian average]
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Status	Docs available [build log] Last success reported on 2015-01-16 [all 1 reports]

Readme for arrow-list-0.7

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List arrows for Haskell.

This small Haskell library provides some type classes, types and functions to work with list arrows and the more generalized container arrows. List arrows represent computations that may return multiple outputs. Making functions that return lists an instance of both the Category and Arrow type classes allow you to easily compose multiple computations into one with standard building blocks.

This package provides:

A type class ArrowList for embedding functions that produce a list of outputs into some list arrow.
A list of utility functions for working with list-arrows, these functions are based on the ArrowList type class so they are not tied one specific instance.
A concrete list arrow type that is implemented as a Kleisli arrow over the ListT list monad transformer. In short, you can both build pure list arrows and list arrows that produce tributary effects.
Not list arrow specific: A type class ArrowKleisli for embedding monadic computations into an arrow.
A type class ArrowF for embedding functions that produce a some Foldable + Alternative functor of outputs into some container arrow.