assoc

swap and assoc: Symmetric and Semigroupy Bifunctors

LTS Haskell 24.17:1.1.1@rev:1
Stackage Nightly 2025-10-31:1.1.1@rev:1
Latest on Hackage:1.1.1@rev:1

See all snapshots assoc appears in

BSD-3-Clause licensed and maintained by Oleg Grenrus
This version can be pinned in stack with:assoc-1.1.1@sha256:0ab39b4d1feb4caca95ac6e314f48782b27a86a6b8d1f5e8dc4be9fbed11185f,1420

Module documentation for 1.1.1

Depends on 1 package(full list with versions):
base
Used by 6 packages in nightly-2025-10-31(full list with versions):
bifunctors, functor-combinators, lens, strict, these, validation

Provides generalisations of swap :: (a,b) -> (b,a) and assoc :: ((a,b),c) -> (a,(b,c)) to Bifunctors supporting similar operations (e.g. Either, These).

Changes

1.1.1

  • Drop support for GHC prior GHC-8.6.5

1.1

  • Depend on bifunctor-classes-compat only. Instances for types defined in bifunctors package are moved there. With this change assoc only depends on base and tagged.
  • Mark modules as explicitly Safe

1.0.2

  • Add ‘Swap’ instances for more n-tuples

1.0.1

  • Add Assoc Const and Tagged instances