Summary
This package provides first class labels that can act as bidirectional record fields. The labels can be derived automatically using Template Haskell which means you don't have to write any boilerplate yourself. The labels are implemented as lenses and are fully composable. Labels can be used to /get/, /set/ and /modify/ parts of a datatype in a consistent way. See "Data.Label" for an introductory explanation. Internally lenses are not tied to Haskell functions directly, but are implemented as arrows. Arrows allow the lenses to be run in custom computational contexts. This approach allows us to make partial lenses that point to fields of multi-constructor datatypes in an elegant way. See the "Data.Label.Maybe" module for the use of partial labels. > 1.0.3 -> 1.0.4 > - Bugfix to compile on GHC 6.12 again.
Versions
v2.0.3.1 :: 0/2.0.3.1 :: gentoo
- Modified
- License
- BSD
- Keywords
- ~amd64 ~x86
- USE flags
- doc hscolour profile test
v2.0.3 :: 0/2.0.3 :: gentoo
- Modified
- License
- BSD
- Keywords
- ~amd64 ~x86
- USE flags
- doc hscolour profile test
v2.0.2.3 :: 0/2.0.2.3 :: gentoo
- Modified
- License
- BSD
- Keywords
- ~amd64 ~x86
- USE flags
- doc hscolour profile test
USE flags
General
- doc
- Add extra documentation (API, Javadoc, etc). It is recommended to enable per package instead of globally
- hscolour
- Include coloured haskell sources to generated documentation (dev-haskell/hscolour)
- profile
- Add support for software performance analysis (will likely vary from ebuild to ebuild)
- test
- Enable dependencies and/or preparations necessary to run tests (usually controlled by FEATURES=test but can be toggled independently)
Dependencies
dev-haskell / cabal : A framework for packaging Haskell software
dev-haskell / haddock : A documentation-generation tool for Haskell libraries
dev-haskell / hscolour : Colourise Haskell code
dev-haskell / hunit : A unit testing framework for Haskell
dev-haskell / mtl : Monad classes, using functional dependencies
dev-haskell / transformers : Concrete functor and monad transformers
Runtime Dependencies
dev-haskell / mtl : Monad classes, using functional dependencies
dev-haskell / transformers : Concrete functor and monad transformers
Depending packages
app-emacs / ghc-mod : Happy Haskell Programming
dev-haskell / uhc-util : UHC utilities
Change logs
- Robin H. Johnson · gentoo
Drop $Id$ per council decision in bug #611234.
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org> - T. Malfatti · gentoo
media-libs/portaudio: Version bump - Sergei Trofimovich · gentoo
dev-haskell/fclabels: bump up to 2.0.3.1
Package-Manager: portage-2.3.2 - Sergei Trofimovich · gentoo
dev-haskell/fclabels: bump up to 2.0.3
Package-Manager: portage-2.2.28 - Sergei Trofimovich · gentoo
dev-haskell/fclabels: new package
"First class accessor labels implemented as lenses", a depend of app-emacs/ghc-mod Bug: https://bugs.gentoo.org/show_bug.cgi?id=476352 Package-Manager: portage-2.2.23