NOTE: This library is unpublished is unpolished. Use at your own risk!
A (partial and WIP) port and adaptation of C. McCann’s and Oleg Grenrus’ Data.These Haskell library.
These.t is a type for inclusive disjunctions. This code base includes two
libraries: the implementation of These.t and it’s associated functions, and
the Align library, which uses These.t to enable zipping and unzipping
structures with mismatched shapes (e.g., lists of unequal length).
These.t can be leveraged anywhere you want to represent a value which can be
this thing of type 'a, that thing of type
'b, or both of these things given together.