one-liner

Constraint-based generics

https://github.com/sjoerdvisscher/one-liner

Version on this page:	0.9.1
LTS Haskell 24.18:	2.1@rev:1
Stackage Nightly 2025-11-01:	2.1@rev:1
Latest on Hackage:	2.1@rev:1

See all snapshots one-liner appears in

BSD-3-Clause licensed by Sjoerd Visscher

Maintained by [email protected]

This version can be pinned in stack with:one-liner-0.9.1@sha256:fedfb4eaa7664225e0b212d164ae06836c686179bf5eddc0ec089b344f89b344,1381

Module documentation for 0.9.1

Generics
- Generics.OneLiner
  - Generics.OneLiner.Internal

Depends on 7 packages(full list with versions):

base, bifunctors, contravariant, ghc-prim, profunctors, tagged, transformers

Used by 1 package in nightly-2017-09-29(full list with versions):

unfoldable

Write short and concise generic instances of type classes. one-liner is particularly useful for writing default implementations of type class methods.