XMonad.Util.Invisible

A data type to store the layout state

Usage:

A wrapper data type to store layout state that shouldn't be persisted across restarts. A common wrapped type to use is Maybe a. Invisible derives trivial definitions for Read and Show, so the wrapped data type need not do so.

newtype Invisible m a

Constructors

I (m a)

Instances

Monad m => Monad (Invisible m)

Functor m => Functor (Invisible m)

Applicative m => Applicative (Invisible m)

(Functor m, Monad m) => Read (Invisible m a)

Monad m => Show (Invisible m a)

whenIJust :: Monad m => Invisible Maybe a -> (a -> m ()) -> m ()

fromIMaybe :: a -> Invisible Maybe a -> a