Base.Utils

The module Utils provides a few simple functions that are commonly used in the compiler, but not implemented in the Haskell Prelude or standard library.

Documentation

fst3 :: (a, b, c) -> a

snd3 :: (a, b, c) -> b

thd3 :: (a, b, c) -> c

curry3 :: ((a, b, c) -> d) -> a -> b -> c -> d

uncurry3 :: (a -> b -> c -> d) -> (a, b, c) -> d

(++!) :: [a] -> [a] -> [a] infixr 5

foldr2 :: (a -> b -> c -> c) -> c -> [a] -> [b] -> c

mapAccumM :: (Monad m, MonadPlus p) => (acc -> x -> m (acc, y)) -> acc -> [x] -> m (acc, p y)

findDouble :: Eq a => [a] -> Maybe a

findMultiples :: Eq a => [a] -> [[a]]