XMonad

Documentation

module XMonad.Main

module XMonad.Core

module XMonad.Config

module XMonad.Layout

module XMonad.ManageHook

module XMonad.Operations

module Graphics.X11

module Graphics.X11.Xlib.Extras

(.|.) :: Bits a => a -> a -> a

Bitwise "or"

class Monad m => MonadState s m | m -> s where

Minimal definition is either both of get and put or just state

Minimal complete definition

state | get, put

Methods

get :: m s

Return the state from the internals of the monad.

put :: s -> m ()

Replace the state inside the monad.

state :: (s -> (a, s)) -> m a

Embed a simple state action into the monad.

Instances

MonadState XState X

Methods

get :: X XState

put :: XState -> X ()

state :: (XState -> (a, XState)) -> X a

MonadState s m => MonadState s (MaybeT m)

Methods

get :: MaybeT m s

put :: s -> MaybeT m ()

state :: (s -> (a, s)) -> MaybeT m a

MonadState s m => MonadState s (ListT m)

Methods

get :: ListT m s

put :: s -> ListT m ()

state :: (s -> (a, s)) -> ListT m a

Monad m => MonadState s (StateT s m)

Methods

get :: StateT s m s

put :: s -> StateT s m ()

state :: (s -> (a, s)) -> StateT s m a

(Monoid w, MonadState s m) => MonadState s (WriterT w m)

Methods

get :: WriterT w m s

put :: s -> WriterT w m ()

state :: (s -> (a, s)) -> WriterT w m a

(Monoid w, MonadState s m) => MonadState s (WriterT w m)

Methods

get :: WriterT w m s

put :: s -> WriterT w m ()

state :: (s -> (a, s)) -> WriterT w m a

Monad m => MonadState s (StateT s m)

Methods

get :: StateT s m s

put :: s -> StateT s m ()

state :: (s -> (a, s)) -> StateT s m a

MonadState s m => MonadState s (IdentityT * m)

Methods

get :: IdentityT * m s

put :: s -> IdentityT * m ()

state :: (s -> (a, s)) -> IdentityT * m a

MonadState s m => MonadState s (ExceptT e m)

Methods

get :: ExceptT e m s

put :: s -> ExceptT e m ()

state :: (s -> (a, s)) -> ExceptT e m a

(Error e, MonadState s m) => MonadState s (ErrorT e m)

Methods

get :: ErrorT e m s

put :: s -> ErrorT e m ()

state :: (s -> (a, s)) -> ErrorT e m a

MonadState s m => MonadState s (ReaderT * r m)

Methods

get :: ReaderT * r m s

put :: s -> ReaderT * r m ()

state :: (s -> (a, s)) -> ReaderT * r m a

MonadState s m => MonadState s (ContT * r m)

Methods

get :: ContT * r m s

put :: s -> ContT * r m ()

state :: (s -> (a, s)) -> ContT * r m a

(Monad m, Monoid w) => MonadState s (RWST r w s m)

Methods

get :: RWST r w s m s

put :: s -> RWST r w s m ()

state :: (s -> (a, s)) -> RWST r w s m a

(Monad m, Monoid w) => MonadState s (RWST r w s m)

Methods

get :: RWST r w s m s

put :: s -> RWST r w s m ()

state :: (s -> (a, s)) -> RWST r w s m a

gets :: MonadState s m => (s -> a) -> m a

Gets specific component of the state, using a projection function supplied.

modify :: MonadState s m => (s -> s) -> m ()

Monadic state transformer.

Maps an old state to a new state inside a state monad. The old state is thrown away.

     Main> :t modify ((+1) :: Int -> Int)
     modify (...) :: (MonadState Int a) => a ()

This says that modify (+1) acts over any Monad that is a member of the MonadState class, with an Int state.

class Monad m => MonadReader r m | m -> r where

See examples in Control.Monad.Reader. Note, the partially applied function type (->) r is a simple reader monad. See the instance declaration below.

Minimal complete definition

(ask | reader), local

Methods

ask :: m r

Retrieves the monad environment.

local :: (r -> r) -> m a -> m a

Executes a computation in a modified environment.

reader :: (r -> a) -> m a

Retrieves a function of the current environment.

Instances

MonadReader Window Query

Methods

ask :: Query Window

local :: (Window -> Window) -> Query a -> Query a

reader :: (Window -> a) -> Query a

MonadReader XConf X

Methods

ask :: X XConf

local :: (XConf -> XConf) -> X a -> X a

reader :: (XConf -> a) -> X a

MonadReader r m => MonadReader r (MaybeT m)

Methods

ask :: MaybeT m r

local :: (r -> r) -> MaybeT m a -> MaybeT m a

reader :: (r -> a) -> MaybeT m a

MonadReader r m => MonadReader r (ListT m)

Methods

ask :: ListT m r

local :: (r -> r) -> ListT m a -> ListT m a

reader :: (r -> a) -> ListT m a

MonadReader r ((->) r)

Methods

ask :: r -> r

local :: (r -> r) -> (r -> a) -> r -> a

reader :: (r -> a) -> r -> a

(Monoid w, MonadReader r m) => MonadReader r (WriterT w m)

Methods

ask :: WriterT w m r

local :: (r -> r) -> WriterT w m a -> WriterT w m a

reader :: (r -> a) -> WriterT w m a

(Monoid w, MonadReader r m) => MonadReader r (WriterT w m)

Methods

ask :: WriterT w m r

local :: (r -> r) -> WriterT w m a -> WriterT w m a

reader :: (r -> a) -> WriterT w m a

MonadReader r m => MonadReader r (StateT s m)

Methods

ask :: StateT s m r

local :: (r -> r) -> StateT s m a -> StateT s m a

reader :: (r -> a) -> StateT s m a

MonadReader r m => MonadReader r (StateT s m)

Methods

ask :: StateT s m r

local :: (r -> r) -> StateT s m a -> StateT s m a

reader :: (r -> a) -> StateT s m a

MonadReader r m => MonadReader r (IdentityT * m)

Methods

ask :: IdentityT * m r

local :: (r -> r) -> IdentityT * m a -> IdentityT * m a

reader :: (r -> a) -> IdentityT * m a

MonadReader r m => MonadReader r (ExceptT e m)

Methods

ask :: ExceptT e m r

local :: (r -> r) -> ExceptT e m a -> ExceptT e m a

reader :: (r -> a) -> ExceptT e m a

(Error e, MonadReader r m) => MonadReader r (ErrorT e m)

Methods

ask :: ErrorT e m r

local :: (r -> r) -> ErrorT e m a -> ErrorT e m a

reader :: (r -> a) -> ErrorT e m a

Monad m => MonadReader r (ReaderT * r m)

Methods

ask :: ReaderT * r m r

local :: (r -> r) -> ReaderT * r m a -> ReaderT * r m a

reader :: (r -> a) -> ReaderT * r m a

MonadReader r' m => MonadReader r' (ContT * r m)

Methods

ask :: ContT * r m r'

local :: (r' -> r') -> ContT * r m a -> ContT * r m a

reader :: (r' -> a) -> ContT * r m a

(Monad m, Monoid w) => MonadReader r (RWST r w s m)

Methods

ask :: RWST r w s m r

local :: (r -> r) -> RWST r w s m a -> RWST r w s m a

reader :: (r -> a) -> RWST r w s m a

(Monad m, Monoid w) => MonadReader r (RWST r w s m)

Methods

ask :: RWST r w s m r

local :: (r -> r) -> RWST r w s m a -> RWST r w s m a

reader :: (r -> a) -> RWST r w s m a

asks

Arguments

:: MonadReader r m

=> (r -> a)

The selector function to apply to the environment.

-> m a

Retrieves a function of the current environment.

class Monad m => MonadIO m where

Monads in which IO computations may be embedded. Any monad built by applying a sequence of monad transformers to the IO monad will be an instance of this class.

Instances should satisfy the following laws, which state that liftIO is a transformer of monads:

• liftIO . return = return

• liftIO (m >>= f) = liftIO m >>= (liftIO . f)

Minimal complete definition

liftIO

Methods

liftIO :: IO a -> m a

Lift a computation from the IO monad.

Instances

MonadIO IO

Methods

liftIO :: IO a -> IO a

MonadIO Query

Methods

liftIO :: IO a -> Query a

MonadIO X

Methods

liftIO :: IO a -> X a

(Error e, MonadIO m) => MonadIO (ErrorT e m)

Methods

liftIO :: IO a -> ErrorT e m a

MonadIO m => MonadIO (StateT s m)

Methods

liftIO :: IO a -> StateT s m a

MonadIO m => MonadIO (ReaderT * r m)

Methods

liftIO :: IO a -> ReaderT * r m a