Hoogle Search
Within LTS Haskell 24.60 (ghc-9.10.3)
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lookup :: TargetPath -> FileMap -> Maybe FileInfohackage-security Hackage.Security.TUF.FileMap No documentation available.
lookup :: Configured a => Config -> Name -> IO (Maybe a)configurator Data.Configurator Look up a name in the given Config. If a binding exists, and the value can be converted to the desired type, return the converted value, otherwise Nothing.
lookup :: Text -> Int -> Context a -> Maybe adhall Dhall.Context Look up a key by name and index
lookup _ _ empty = Nothing lookup k 0 (insert k v c) = Just v lookup k n (insert k v c) = lookup k (n - 1) c lookup k n (insert j v c) = lookup k n c -- k /= j
lookup :: Ord k => k -> Map k v -> Maybe vdhall Dhall.Map Retrieve a key from a Map
lookup k mempty = empty lookup k (x <> y) = lookup k y <|> lookup k x
>>> lookup "A" (fromList [("B",1),("A",2)]) Just 2 >>> lookup "C" (fromList [("B",1),("A",2)]) Nothinglookup :: Insertable k => k -> MultiMap k v -> Maybe [v]distributed-process-extras Control.Distributed.Process.Extras.Internal.Containers.MultiMap No documentation available.
lookup :: Expr -> Triexpr a -> [(Expr, [(Expr, Expr)], a)]express Data.Express.Triexpr Performs a lookup in a Triexpr.
lookup :: KeyedCollection c => Key c -> c -> Maybe (Value c)foundation Foundation.Collection No documentation available.
lookup :: Lookup f => Key f -> f a -> Maybe akeys Data.Key No documentation available.
lookup :: (Eq k, Hashable k) => k -> MonoidalHashMap k v -> Maybe vmonoidal-containers Data.HashMap.Monoidal O(log n) Return the value to which the specified key is mapped, or Nothing if this map contains no mapping for the key.
lookup :: Int -> MonoidalIntMap a -> Maybe amonoidal-containers Data.IntMap.Monoidal No documentation available.