Added the 'Dao.Predicate.isPFalse', 'Dao.Predicate.isPTrue', and 'Dao.Predicate.isPError' functions which could be useful when filtering through lists of 'Dao.Predicate.Predicate' values.
Added the 'Dao.Predicate.isPFalse', 'Dao.Predicate.isPTrue', and
'Dao.Predicate.isPError' functions which could be useful when
filtering through lists of 'Dao.Predicate.Predicate' values.

printedheart/Dao