The pipes package
"Iteratees done right". This library implements iteratees/enumerators/enumeratees simply and elegantly, but uses different naming conventions.
Advantages over traditional iteratee implementations:
Simpler semantics: There is only one data type (
Pipe), two primitives (
yield), and only one way to compose
.). In fact, this library introduces no new operators, using only its
Categoryinstances to implement all behavior.
Clearer naming conventions: Enumeratees are called
Pipes, Enumerators are
Producers, and Iteratees are
Consumers are just type synonyms for
Pipes with either the input or output end closed.
Pipes are Categories: You compose them using ordinary composition. There are actually two
Categoryinstances: one for
Lazycomposition and one for
Strictcomposition. Both instances satisfy the
Intuitive: Pipe composition is easier to reason about because it is a true
Category. Composition works seamlessly and you don't have to worry about restarting iteratees, feeding new input, etc. "It just works".
Vertical concatenation works flawlessly on everything: (
Pipes, but since everything is a
Pipe, you can use it to concatenate
Consumers, and even intermediate
Pipestages. Vertical Concatenation always works the way you expect, picking up where the previous
Symmetric implementation: Most iteratee libraries are either enumerator-driven or iteratee-driven.
Pipes are implemented symmetrically, which is why they can be composed with either
This library does not yet provide convenience
Pipes for common operations,
but they are forthcoming. However, there are several examples in the
documentation to get you started and I encourage you to write your own to see
how easy they are to write.
|Versions||1.0, 1.0.1, 1.0.2, 2.0.0, 2.1.0, 2.2.0, 2.3.0, 2.4.0, 2.5.0, 3.0.0, 3.1.0, 3.2.0, 3.3.0, 4.0.0, 4.0.1, 4.0.2, 4.1.0, 4.1.1, 4.1.2, 4.1.3, 4.1.4, 4.1.5, 4.1.6, 4.1.7, 4.1.8, 4.1.9, 4.2.0, 4.3.0, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.3.5, 4.3.6, 4.3.7|
|Dependencies||base (==4.*), mtl, void [details]|
|Copyright||2012 Gabriel Gonzalez|
|Source repository||head: git clone https://github.com/Gabriel439/Haskell-Pipes-Library|
|Uploaded||Tue Mar 20 19:57:30 UTC 2012 by GabrielGonzalez|
|Distributions||Arch:4.3.7, Debian:4.1.7, Fedora:4.3.2, LTSHaskell:4.3.7, NixOS:4.3.7, Stackage:4.3.7, Tumbleweed:4.3.4|
|Downloads||38500 total (1865 in the last 30 days)|
|Rating||2.75 (votes: 9) [estimated by rule of succession]|
|Status||Docs available [build log]
Last success reported on 2016-06-04 [all 1 reports]
Hackage Matrix CI
For package maintainers and hackage trustees