Add a few functions thats revolving around Either to accumulate errors #23
Description
-
def orElse(either1, either2) (try one either, or else ty the next one)
-
validation data type ==> Left of Either lifted to a List
-
Applicative for validation to accumulate errors.
Please excuse me if some of these are already available in some other way.
@dbrattli I am happy to contribute if you are ok with it.