Hoogle Search
Within LTS Haskell 24.38 (ghc-9.10.3)
Note that Stackage only displays results for the latest LTS and Nightly snapshot. Learn more.
boundedCountMaybeNext :: (Eq a, Bounded a, Enum a) => Maybe a -> Maybe acountable Data.Countable No documentation available.
countMaybeNext :: Countable a => Maybe a -> Maybe acountable Data.Countable No documentation available.
finiteCountMaybeNext :: Finite a => Maybe a -> Maybe acountable Data.Searchable No documentation available.
CqlMaybe :: Maybe Value -> Valuecql Database.CQL.Protocol No documentation available.
CqlMaybe :: Maybe Value -> Valuecql Database.CQL.Protocol.Internal No documentation available.
envMaybe :: Var a => String -> Parser (Maybe a)envy System.Envy Environment variable getter returning Maybe
-
fakedata Faker.Combinators Tries to generate a value that satisfies a predicate.
λ> import qualified Faker.Address as AD λ> item :: forall a m. Text <- generate $ suchThatMaybe AD.country (x -> (T.length x > 5)) λ> item Just Ecuador
catMaybes :: Filtrable f => f (Maybe a) -> f afiltrable Data.Filtrable catMaybes = mapMaybe id
mapMaybe :: Filtrable f => (a -> Maybe b) -> f a -> f bfiltrable Data.Filtrable Map the container with the given function, dropping the elements for which it returns Nothing.
mapMaybeA :: (Filtrable f, Traversable f, Applicative p) => (a -> p (Maybe b)) -> f a -> p (f b)filtrable Data.Filtrable Traverse the container with the given function, dropping the elements for which it returns Nothing.