union

Extensible type-safe unions

Version on this page:0.1.1.0
LTS Haskell 14.27:0.1.2@rev:4
Stackage Nightly 2019-09-21:0.1.2@rev:4
Latest on Hackage:0.1.2@rev:5

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BSD-3-Clause licensed by Index Int
Maintained by Index Int
This version can be pinned in stack with:union-0.1.1.0@sha256:51242c5382c32f9f8d4e60692f6234774989566b78c882e411da14236fe2d787,1984

Module documentation for 0.1.1.0

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).