ghc-generics-sop

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. Since version 0.4.0.0, this package is now based on '<https://hackage.haskell.org/package/sop-core sop-core>'. The core package contains all the functionality of n-ary sums and products, whereas this package provides the datatype-generic programming support on top. Examples of using this library are provided by the following packages: * '<https://hackage.haskell.org/package/basic-sop basic-sop>' basic examples, * '<https://hackage.haskell.org/package/pretty-sop pretty-sop>' generic pretty printing, * '<https://hackage.haskell.org/package/lens-sop lens-sop>' generically computed lenses, * '<https://hackage.haskell.org/package/json-sop 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. <http://www.andres-loeh.de/TrueSumsOfProducts True Sums of Products>. Workshop on Generic Programming (WGP) 2014.

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