./math/hs-bifunctors, Bifunctors

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Branch: CURRENT, Version: 5.6.2nb1, Package name: hs-bifunctors-5.6.2nb1, 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: 37.298 KB

Version history: (Expand)

CVS history: (Expand)


   2023-11-02 07:37:49 by Masatake Daimon | Files touched by this commit (1141) 
Log message:
Revbump all Haskell after updating lang/ghc96
   2023-10-29 10:48:51 by Masatake Daimon | Files touched by this commit (4) 
Log message:
math/hs-bifunctors: Update to 5.6.1

The release note is too long to paste here. See
https://hackage.haskell.org/package/bifunctors-5.6.1/changelog
   2023-10-09 06:55:01 by Masatake Daimon | Files touched by this commit (988) 
Log message:
Bump Haskell packages after updating lang/ghc94
   2023-01-26 12:16:50 by Masatake Daimon | Files touched by this commit (4) 
Log message:
math/hs-bifunctors: Update to 5.5.14

5.5.14 [2022.12.07]
* Define Functor, Foldable, and Traversable instances for Sum and Product.

5.5.13 [2022.09.12]
* Make the Biapplicative instances for tuples lazy, to match their
  Bifunctor instances.
   2022-08-18 20:32:15 by Thomas Klausner | Files touched by this commit (2) | Package updated
Log message:
hs-bifunctors: update to 5.5.12.

5.5.12 [2022.05.07]
-------------------
* Backport an upstream GHC change which removes the default implementation of
  `bitraverse`. Per the discussion in
  https://github.com/haskell/core-libraries-committee/issues/47, this default
  implementation was completely broken, as attempting to use it would always
  result in an infinite loop.
   2022-02-26 04:58:36 by Masatake Daimon | Files touched by this commit (872) 
Log message:
Bump all Haskell packages after enabling "split sections" in mk/haskell.mk
   2022-02-12 09:51:00 by Masatake Daimon | Files touched by this commit (575) 
Log message:
revbump after changing the default Haskell compiler
   2022-02-12 06:19:37 by Masatake Daimon | Files touched by this commit (3) 
Log message:
Update to bifunctors-5.5.11

5.5.11 [2021.04.30]
    Allow building with template-haskell-2.18 (GHC 9.2).