microlens: A tiny part of the lens library which you can depend upon

[ bsd3, data, lenses, library ] [ Propose Tags ]

This is an extract from lens (with no dependencies). It's not a toy lenses library, unsuitable for “real world”, but merely a small one. It is compatible with lens, and should have same performance. It also has better documentation.

Use this library:

  • if you want to define lenses or traversals in your own library, but don't want to depend on lens

  • if you are new to lenses and want a small library to play with, but don't want to use something “inferior” or have to relearn things when/if you switch to lens

Don't use this library:

  • if you need Isos, Prisms, indexed traversals, or actually anything else which isn't defined here

  • if you think lenses compose “in the wrong order” (in which case you're looking for fclabels)

If you're writing an application which uses lenses more extnesively, look at microlens-platform – it combines features of all other microlens packages (microlens-mtl, microlens-th, microlens-ghc).

There's a longer readme on Github, you should read it if you're still interested about using this library.

Note that microlens has no dependencies starting from GHC 7.10 (base-4.8). Prior to that, it has to depend on transformers-0.2 or above.

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Versions [RSS] 0.1.0.0, 0.1.1.0, 0.1.2.0, 0.1.3.0, 0.1.5.0, 0.2.0.0, 0.3.0.0, 0.3.1.0, 0.3.2.0, 0.3.3.0, 0.3.4.0, 0.3.4.1, 0.3.5.0, 0.3.5.1, 0.4.0.0, 0.4.0.1, 0.4.1.0, 0.4.2.0, 0.4.2.1, 0.4.3.0, 0.4.4.0, 0.4.4.1, 0.4.4.2, 0.4.4.3, 0.4.5.0, 0.4.6.0, 0.4.7.0, 0.4.8.0, 0.4.8.1, 0.4.8.2, 0.4.8.3, 0.4.9, 0.4.9.1, 0.4.10, 0.4.11, 0.4.11.1, 0.4.11.2, 0.4.12.0, 0.4.13.0, 0.4.13.1 (info)
Change log CHANGELOG.md
Dependencies base (>=4.5 && <5), transformers (>=0.2) [details]
License BSD-3-Clause
Author Artyom
Maintainer Artyom <yom@artyom.me>
Category Data, Lenses
Home page http://github.com/aelve/microlens
Bug tracker http://github.com/aelve/microlens/issues
Source repo head: git clone git://github.com/aelve/microlens.git
Uploaded by Artyom at 2015-08-23T13:46:01Z
Distributions Arch:0.4.13.1, Debian:0.4.11.2, Fedora:0.4.13.1, LTSHaskell:0.4.13.1, NixOS:0.4.13.1, Stackage:0.4.13.1, openSUSE:0.4.13.1
Reverse Dependencies 237 direct, 627 indirect [details]
Downloads 86787 total (371 in the last 30 days)
Rating 2.75 (votes: 12) [estimated by Bayesian average]
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Status Docs available [build log]
Last success reported on 2015-10-17 [all 1 reports]