bifunctors

Bifunctors

http://github.com/ekmett/bifunctors/

Version on this page:5.2.1@rev:2
LTS Haskell 24.18:5.6.2@rev:2
Stackage Nightly 2025-11-04:5.6.2@rev:2
Latest on Hackage:5.6.2@rev:2

See all snapshots bifunctors appears in

BSD-3-Clause licensed by Edward A. Kmett
Maintained by Edward A. Kmett
This version can be pinned in stack with:bifunctors-5.2.1@sha256:51127e686dad4b57803984e28f048712018d139008d6eb67015ff9b36f261d43,2806

Module documentation for 5.2.1

  • Data
    • Data.Biapplicative
    • Data.Bifoldable
    • Data.Bifunctor
      • Data.Bifunctor.Biff
      • Data.Bifunctor.Clown
      • Data.Bifunctor.Fix
      • Data.Bifunctor.Flip
      • Data.Bifunctor.Functor
      • Data.Bifunctor.Join
      • Data.Bifunctor.Joker
      • Data.Bifunctor.Product
      • Data.Bifunctor.Sum
      • Data.Bifunctor.TH
      • Data.Bifunctor.Tannen
      • Data.Bifunctor.Wrapped
    • Data.Bitraversable

bifunctors

Hackage Build Status

Contact Information

Contributions and bug reports are welcome!

Please feel free to contact me through github or on the #haskell IRC channel on irc.freenode.net.

-Edward Kmett

Changes

5.2.1

  • Added Bifoldable and Bitraversable instances for Constant from transformers
  • Data.Bifunctor.TH now compiles warning-free on GHC 8.0

5.2

  • Added several Arrow-like instances for Tannen so we can use it as the Cayley construction if needed.
  • Added Data.Bifunctor.Sum
  • Added BifunctorFunctor, BifunctorMonad and BifunctorComonad.
  • Backported Bifunctor Constant instance from transformers

5.1

  • Added Data.Bifunctor.Fix
  • Added Data.Bifunctor.TH, which permits TemplateHaskell-based deriving of Bifunctor, Bifoldable and Bitraversable instances.
  • Simplified Bitraversable.

5

  • Inverted the dependency on semigroupoids. We can support a much wider array of base versions than it can.
  • Added flags

4.2.1

  • Support Arg from semigroups 0.16.2
  • Fixed a typo.

4.2

  • Bumped dependency on tagged, which is required to build cleanly on GHC 7.9+
  • Only export Data.Bifunctor when building on GHC < 7.9, otherwise it comes from base.

4.1.1.1

  • Added documentation for ‘Bifoldable’ and ‘Bitraversable’

4.1.1

  • Added Data.Bifunctor.Join
  • Fixed improper lower bounds on base

4.1.0.1

  • Updated to BSD 2-clause license

4.1

  • Added product bifunctors

4.0

  • Compatibility with semigroupoids 4.0

3.2

  • Added missing product instances for Biapplicative and Biapply.

3.1

  • Added Data.Biapplicative.
  • Added the Clown and Joker bifunctors from Conor McBride’s “Clowns to the left of me, Jokers to the right.”
  • Added instances for Const, higher tuples
  • Added Tagged instances.

3.0.4

  • Added Data.Bifunctor.Flip and Data.Bifunctor.Wrapped.

3.0.3

  • Removed upper bounds from my other package dependencies