universe-reverse-instances

Instances of standard classes that are made possible by enumerations

https://github.com/dmwit/universe

Version on this page:1.1@rev:2
LTS Haskell 24.18:1.1.2@rev:1
Stackage Nightly 2025-11-03:1.1.2@rev:1
Latest on Hackage:1.1.2@rev:1

See all snapshots universe-reverse-instances appears in

BSD-3-Clause licensed by Daniel Wagner
Maintained by [email protected]
This version can be pinned in stack with:universe-reverse-instances-1.1@sha256:9d46e98a81556a54c5be3346bc6e087cbd0036255eeb34cb28b3e59ab48646d3,1283

Module documentation for 1.1

Used by 2 packages in lts-14.27(full list with versions):
lattices, universe

For example this package provides a Eq (a -> b) instance:

instance (Finite a, Eq b) => Eq (a -> b) where
f == g = and [f x == g x | x <- universeF]