> The point of input validation is to fail early, not to ensure the function executes. > What if the function is deleteWhereNotIn( list param )? error: coul

> The point of input validation is to fail early, not to ensure the function executes. > What if the function is deleteWhereNotIn( list param )? error: could not assign `param` = `mungeList foo` note: failed to match `List a` <= `Either SomeError (List b)` note: failed to match `List` <= `Either SomeError`