Implementation of n-ary sums and n-ary products.
The module "Data.SOP" is the main module of this library and contains more detailed documentation.
The main use case of this package is to serve as the core of '<https://hackage.haskell.org/package/generics-sop generics-sop>'.
A detailed description of the ideas behind this library is provided by the paper:
<http://www.andres-loeh.de/TrueSumsOfProducts True Sums of Products>. Workshop on Generic Programming (WGP) 2014.