Acquire

Documentation

newtype Acquire resource

Implementation of http://www.haskellforall.com/2013/06/the-resource-applicative.html

Constructors

Acquire (IO (resource, IO ()))

Instances

Monad Acquire

Methods

(>>=) :: Acquire a -> (a -> Acquire b) -> Acquire b

(>>) :: Acquire a -> Acquire b -> Acquire b

return :: a -> Acquire a

fail :: String -> Acquire a

Functor Acquire

Methods

fmap :: (a -> b) -> Acquire a -> Acquire b

(<$) :: a -> Acquire b -> Acquire a

Applicative Acquire

Methods

pure :: a -> Acquire a

(<*>) :: Acquire (a -> b) -> Acquire a -> Acquire b

liftA2 :: (a -> b -> c) -> Acquire a -> Acquire b -> Acquire c

(*>) :: Acquire a -> Acquire b -> Acquire b

(<*) :: Acquire a -> Acquire b -> Acquire a

MonadIO Acquire

Methods

liftIO :: IO a -> Acquire a

with :: Acquire resource -> (resource -> IO a) -> IO a