Control.Monad.Representable

Representable functors on Hask all monads, being isomorphic to a reader monad.

Representable functor monad

type Rep f = RepT f Identity

rep :: Functor f => f b -> Rep f b

runRep :: Functor f => Rep f b -> f b

Monad Transformer

newtype RepT f m b

Constructors

RepT

Fields

runRepT :: f (m b)

Instances

(Representable f, MonadWriter w m) => MonadWriter w (RepT f m)

Representable f => MonadTrans (RepT f)

(Representable f, Monad m) => Monad (RepT f m)

(Functor f, Functor m) => Functor (RepT f m)

(Representable f, Applicative m) => Applicative (RepT f m)

(Foldable f, Foldable m) => Foldable (RepT f m)

(Traversable f, Traversable m) => Traversable (RepT f m)

(Representable f, Representable m, Semigroup (Key f), Semigroup (Key m), Monoid (Key f), Monoid (Key m)) => Comonad (RepT f m)

(Representable f, Representable m, Semigroup (Key f), Semigroup (Key m)) => Extend (RepT f m)

(Representable f, Distributive m) => Distributive (RepT f m)

(Foldable1 f, Foldable1 m) => Foldable1 (RepT f m)

(Traversable1 f, Traversable1 m) => Traversable1 (RepT f m)

(Keyed f, Keyed m) => Keyed (RepT f m)

(Indexable f, Indexable m) => Indexable (RepT f m)

(Lookup f, Lookup m) => Lookup (RepT f m)

(FoldableWithKey f, FoldableWithKey m) => FoldableWithKey (RepT f m)

(FoldableWithKey1 f, FoldableWithKey1 m) => FoldableWithKey1 (RepT f m)

(TraversableWithKey f, TraversableWithKey m) => TraversableWithKey (RepT f m)

(TraversableWithKey1 f, TraversableWithKey1 m) => TraversableWithKey1 (RepT f m)

(Representable f, MonadIO m) => MonadIO (RepT f m)

(Representable f, Apply m) => Apply (RepT f m)

(Representable f, Bind m) => Bind (RepT f m)

(Representable f, Representable m) => Representable (RepT f m)

module Data.Functor.Representable