generics-sop

Generic Programming using True Sums of Products

Version on this page:	0.1.1
LTS Haskell 24.25:	0.5.1.4@rev:2
Stackage Nightly 2025-12-26:	0.5.1.4@rev:2
Latest on Hackage:	0.5.1.4@rev:2

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BSD-3-Clause licensed by Edsko de Vries, Andres Löh

Maintained by [email protected]

This version can be pinned in stack with:generics-sop-0.1.1@sha256:4dd7fe772db10e72526900ac56339d37dd189f7e1fa1ecf7fb4914aca54d36c6,3565

Module documentation for 0.1.1

Generics
- Generics.SOP

Depends on 3 packages(full list with versions):

base, ghc-prim, template-haskell

A library to support the definition of generic functions. Datatypes are viewed in a uniform, structured way: the choice between constructors is represented using an n-ary sum, and the arguments of each constructor are represented using an n-ary product.

The module Generics.SOP is the main module of this library and contains more detailed documentation.

Examples of using this library are provided by the following packages:

basic-sop basic examples,
pretty-sop generic pretty printing,
lens-sop generically computed lenses,
json-sop generic JSON conversions.

A detailed description of the ideas behind this library is provided by the paper:

Edsko de Vries and Andres Löh. True Sums of Products. Workshop on Generic Programming (WGP) 2014.