\documentclass[a4wide]{article}

\usepackage{color}
\usepackage{crg-group}
\usepackage{listings}
\usepackage[a4paper=true,colorlinks=true,urlcolor=blue]{hyperref}

\begin{document}

\haskellsettings

\begin{lstlisting}
-- Lists

foldl :: (accum -> item -> accum) -> accum -> [item] -> accum
foldM :: Monad m => (accum -> item -> m accum) -> accum -> [item] -> m accum

mapAccumL :: (accum -> a -> (accum, b)) -> accum -> [a] -> (acc, [b])

zip :: [a] -> [b] -> [(a, b)]
unzip :: [(a, b)] -> ([a], [b])

-- Misc

fromMaybe :: a -> Maybe a -> a
maybe :: b -> (a -> b) -> Maybe a -> b

transformPair :: (x -> a) -> (y -> b) -> (x,y) -> (a,b)

-- Monads

liftM :: Monad m => (a -> b) -> m a -> m b
liftM2 :: Monad m => (a1 -> a2 -> b) -> m a1 -> m a2 -> m b

lift :: Monad m => m a -> t m a -- lifts a value
liftF :: (MonadTrans t, Monad m) => (a -> m b) -> (a -> t m b) -- lifts a function

-- State monad

runStateT :: Monad monad => StateT state monad value -> state -> monad (value,state)

evalStateT :: Monad monad => StateT state monad value -> state -> monad value
execStateT :: Monad monad => StateT state monad value -> state -> monad state
\end{lstlisting}


\end{document}