union

Extensible type-safe unions

Version on this page:0.1.1.2@rev:4
LTS Haskell 24.26:0.1.3
Stackage Nightly 2025-12-31:0.1.3
Latest on Hackage:0.1.3

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BSD-3-Clause licensed by Vladislav Zavialov
Maintained by Vladislav Zavialov
This version can be pinned in stack with:union-0.1.1.2@sha256:8760a9294e2840a558ed62a462b1161925cdf037eaf3d9c99891bebfe702bddf,2084

Module documentation for 0.1.1.2

  • Data
    • Data.Union

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).