Utils.List

Documentation

safeHead :: [a] -> Maybe a

safeLast :: [a] -> Maybe a

safeTail :: [a] -> Maybe [a]

safeInit :: [a] -> Maybe [a]

groupByKey :: Eq b => (a -> b) -> [a] -> [[a]]

groupTuplesByKey :: Eq a => [(a, b)] -> [(a, [b])]

sortByKey :: Ord b => (a -> b) -> [a] -> [a]

zipWithKey :: Eq a => [(a, b)] -> [(a, c)] -> [(b, Maybe c)]

mergeUnion :: Eq a => [(a, b)] -> [(a, c)] -> [(Maybe b, Maybe c)]

mix :: [a] -> [a] -> [a]

tupleReverse :: (b, a) -> (a, b)