Data.Map.Extensions

Synopsis

• module Data.Map
• drop :: Int -> Map k v -> Map k v
• take :: Int -> Map k v -> Map k v
• slice :: Ord k => Map k v -> k -> k -> Map k v
• slicei :: Ord k => Map k v -> Int -> Int -> Map k v
• keepKeys :: Ord k => Set k -> Map k a -> Map k a
• dropKeys :: Ord k => Set k -> Map k a -> Map k a
• filterM :: (Ord k, Monad m) => (v -> m Bool) -> Map k v -> m (Map k v)
• transpose :: (Ord a, Ord b) => Lookup2 a b v -> Lookup2 b a v
• scanl1 :: Ord k => (a -> a -> a) -> Lookup k a -> Lookup k a
• scanr1 :: Ord k => (a -> a -> a) -> Lookup k a -> Lookup k a
• groupBy :: Ord b => (a -> b) -> [a] -> Map b [a]
• groupKeysBy :: (Ord a, Ord b) => (a -> b) -> Lookup a v -> Lookup2 b a v
• groupElemsBy :: (Ord a, Ord b) => (v -> b) -> Lookup a v -> Lookup2 b a v
• fromList2 :: (Ord a, Ord b) => [(a, b, v)] -> Lookup2 a b v
• fromLists :: Ord k => [k] -> [v] -> Map k v
• lookup2 :: (Ord a, Ord b) => a -> b -> Lookup2 a b v -> Maybe v
• lookup3 :: (Ord a, Ord b, Ord c) => a -> b -> c -> Lookup3 a b c v -> Maybe v
• lookup4 :: (Ord a, Ord b, Ord c, Ord d) => a -> b -> c -> d -> Lookup4 a b c d v -> Maybe v
• type Lookup ix1 tgt = Map ix1 tgt
• type Lookup2 ix1 ix2 tgt = Map ix1 (Map ix2 tgt)
• type Lookup3 ix1 ix2 ix3 tgt = Map ix1 (Lookup2 ix2 ix3 tgt)
• type Lookup4 ix1 ix2 ix3 ix4 tgt = Lookup2 ix1 ix2 (Lookup2 ix3 ix4 tgt)

Documentation