Just like Either, a data type representing a union of a value of the Left
type and a value of the Right type.
Unlike Either, These has a third member in its union, called Both, that
has both a Left value and a Right value. Representing, for example, the
results of an operation that can succeed partially, returning some errors with
its results.
Just like
Either, a data type representing a union of a value of theLefttype and a value of theRighttype.Unlike
Either,Thesehas a third member in its union, calledBoth, that has both aLeftvalue and aRightvalue. Representing, for example, the results of an operation that can succeed partially, returning some errors with its results.