Protolude.Safe

Documentation

headMay :: [a] -> Maybe a

headDef :: a -> [a] -> a

initMay :: [a] -> Maybe [a]

initDef :: [a] -> [a] -> [a]

initSafe :: [a] -> [a]

tailMay :: [a] -> Maybe [a]

tailDef :: [a] -> [a] -> [a]

tailSafe :: [a] -> [a]

lastDef :: a -> [a] -> a

lastMay :: [a] -> Maybe a

foldr1May :: (a -> a -> a) -> [a] -> Maybe a

foldl1May :: (a -> a -> a) -> [a] -> Maybe a

foldl1May' :: (a -> a -> a) -> [a] -> Maybe a

maximumMay :: Ord a => [a] -> Maybe a

minimumMay :: Ord a => [a] -> Maybe a

maximumDef :: Ord a => a -> [a] -> a

minimumDef :: Ord a => a -> [a] -> a

atMay :: [a] -> Int -> Maybe a

atDef :: a -> [a] -> Int -> a