union

Extensible type-safe unions

Version on this page:	0.1.1.2@rev:3
LTS Haskell 24.16:	0.1.3
Stackage Nightly 2025-10-25:	0.1.3
Latest on Hackage:	0.1.3

See all snapshots union appears in

BSD-3-Clause licensed by Vladislav Zavialov

Maintained by Vladislav Zavialov

This version can be pinned in stack with:union-0.1.1.2@sha256:cc95067213ee34226eb97e75cb4aa4c67f8f71520ac725eecc188f129efb8cd2,2084

Module documentation for 0.1.1.2

Data
- Data.Union

Depends on 5 packages(full list with versions):

base, deepseq, profunctors, tagged, vinyl

Extensible type-safe unions for Haskell with prisms using modern GHC features. Dual to vinyl records. Unions are also known as corecords or polymorphic variants. Neither requires a Typeable constraint nor uses unsafe coercions at the cost of linear time access (negligible in practice).