not -package:what4

Boolean "not"
Truth table for not:
a     | not a
------------
True  | False
False | True
Logical negation.
The connective not negates a statement
Uninterpreted logical connective not
Boolean not
A synonym of negate.
A predicate checking if the input does not match the given predicate
>>> Just 2 `shouldSatisfy` P.just (P.not (P.eq 1))
An alias for complement.
Boolean not.
Negate all the values in a boolean stream.
Negate a proposition.
Logical negation
Logical negation
The complement of a set.
RB.get (RB.not r1) === not (RDB.get r1)
RDB.get (RDB.not r1) === not (RB.get r1)