./math/hs-bifunctors, Bifunctors

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Branch: CURRENT, Version: 5.5.10nb1, Package name: hs-bifunctors-5.5.10nb1, Maintainer: szptvlfn

A bifunctor is a type constructor that takes two type arguments and is
a functor in both arguments. That is, unlike with Functor, a type
constructor such as Either does not need to be partially applied for a
Bifunctor instance, and the methods in this class permit mapping
functions over the Left value or the Right value, or both at the same
time.

Formally, the class Bifunctor represents a bifunctor from Hask ->
Hask.

Intuitively it is a bifunctor where both the first and second
arguments are covariant.

You can define a Bifunctor by either defining bimap or by defining
both first and second.


Required to run:
[devel/hs-tagged] [devel/hs-transformers-compat] [math/hs-semigroups] [devel/hs-base-orphans] [devel/hs-th-abstraction] [math/hs-comonad] [lang/ghc88]

Required to build:
[pkgtools/cwrappers]

Master sites:

Filesize: 44.736 KB

Version history: (Expand)


CVS history: (Expand)


   2021-10-26 12:56:13 by Nia Alarie | Files touched by this commit (458)
Log message:
math: Replace RMD160 checksums with BLAKE2s checksums

All checksums have been double-checked against existing RMD160 and
SHA512 hashes
   2021-10-07 16:28:36 by Nia Alarie | Files touched by this commit (458)
Log message:
math: Remove SHA1 hashes for distfiles
   2021-05-03 21:01:21 by Masatake Daimon | Files touched by this commit (475)
Log message:
*: Bump PKGREVISION for ghc-9.0.1
   2021-04-23 10:00:24 by Masatake Daimon | Files touched by this commit (4)
Log message:
Update to bifunctors-5.5.10

5.5.10 [2021.01.21]
* Fix a bug in which deriveBifoldable could generate code that
  triggers -Wunused-matches warnings.

5.5.9 [2020.12.30]
* Explicitly mark modules as Safe or Trustworthy.

5.5.8 [2020.10.01]
* Fix a bug in which deriveBifunctor would fail on sufficiently
  complex uses of rank-n types in constructor fields.
* Fix a bug in which deriveBiunctor and related functions would
  needlessly reject data types whose two last type parameters appear
  as oversaturated arguments to a type family.

5.5.7 [2020.01.29]
* Add Data.Bifunctor.Biap.
   2020-05-11 19:52:21 by Roland Illig | Files touched by this commit (190)
Log message:
hs-*: add PLIST files

These PLIST files have been autogenerated by mk/haskell.mk using
HS_UPDATE_PLIST=yes during a bulk build.  They will help to track changes
to the packages.  The Haskell packages didn't have PLIST files because
their paths contained package hashes.  These hashes are now determined by
mk/haskell.mk, which makes it easy to generate easy to read PLIST files.
   2020-01-03 05:45:31 by Masatake Daimon | Files touched by this commit (4)
Log message:
Import bifunctors-5.5.6 from wip

A bifunctor is a type constructor that takes two type arguments and is
a functor in both arguments. That is, unlike with Functor, a type
constructor such as Either does not need to be partially applied for a
Bifunctor instance, and the methods in this class permit mapping
functions over the Left value or the Right value, or both at the same
time.

Formally, the class Bifunctor represents a bifunctor from Hask ->
Hask.

Intuitively it is a bifunctor where both the first and second
arguments are covariant.

You can define a Bifunctor by either defining bimap or by defining
both first and second.