adjunctions

Adjunctions and representable functors

http://github.com/ekmett/adjunctions/

Version on this page:4.2.1@rev:1
LTS Haskell 21.14:4.4.2@rev:2
Stackage Nightly 2023-10-02:4.4.2@rev:2
Latest on Hackage:4.4.2@rev:2

See all snapshots adjunctions appears in

BSD-3-Clause licensed by Edward A. Kmett
Maintained by Edward A. Kmett
This version can be pinned in stack with:adjunctions-4.2.1@sha256:a36b8a272455149715fb58c1d8c2a40762ee15bc9cc46145b5e1d6fdc3825248,1972

Module documentation for 4.2.1

Used by 3 packages in lts-2.22(full list with versions):
kan-extensions, linear, streams

adjunctions

Build Status

This package provides adjunctions for Haskell.

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

4.2.1

  • semigroupoids 5 support.
  • profunctors 5 support.

4.2

  • contravariant 1.0 support. Day convolution moves to kan-extensions.

4.0.3

  • Silenced Control.Monad.Instances deprecation warnings on GHC 7.8

4.0.2

  • Added mfixRep to make it easier to define representable MonadFix instances.
  • Added mzipRep and mzipWithRep to make it easier to define representable MonadZip instances.
  • Added duplicateRepBy, extendRepBy and extractRepBy to make it easier to pick your own Monoid.
  • Minor documentation fixes.

4.0.1

  • Increased lower bound on contravariant to match the actual requirement.

4.0

  • Merged the contents of representable-functors.
  • Removed the dependency on keys.
  • Moved Data.Functor.Contravariant.Representable to Data.Functor.Contravariant.Rep and made the API mimic Data.Profunctor.Rep.
  • Moved Data.Functor.Representable to Data.Functor.Rep and made the API mimic Data.Profunctor.Rep.
  • Added Tagged and Proxy instances for Data.Functor.Rep.Representable
  • Added a Proxy instance for Data.Functor.Contravariant.Rep.Representable

3.2.1.1

  • Updated the array dependency

3.2.1

  • Marked modules appropriately Trustworthy.

3.2

  • Updated to representable-functors 3.1, which changed the API for contravariant representable functors.
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