Utils
Documentation
writeError :: String -> IO ()
mapBoth :: (a -> a) -> (a, a) -> (a, a)
mapPartTimes :: (a -> a) -> ((a, a), (a, a)) -> ((a, a), (a, a))
mapFst :: (a -> b) -> (a, c) -> (b, c)
mapSnd :: (a -> b) -> (c, a) -> (c, b)
delta :: Num a => (a, a) -> a
mid :: Fractional a => (a, a) -> a
The midpoint of two values
removeCommon :: Eq a => [a] -> [a] -> ([a], [a])
readMaybe :: Read a => String -> Maybe a
(!!!) :: [a] -> Int -> a
like !! selects nth element from xs, but wraps over at the end of xs
`>>>` **`map ((!!!) [1,3,5]) [0,1,2,3,4,5]`** [1,3,5,1,3,5]
nth :: Int -> [a] -> Maybe a
Safer version of !! -
accumulate :: Num t => [t] -> [t]
enumerate :: [a] -> [(Int, a)]
enumerate a list of things
`>>>` **`enumerate ["foo","bar","baz"]`** [(1,"foo"), (2,"bar"), (3,"baz")]
wordsBy :: (a -> Bool) -> [a] -> [[a]]
split given list of a by given single a, e.g.
`>>>` **`wordsBy (== ':') "bd:3"`** ["bd", "3"]