Portability	portable
Stability	experimental
Maintainer	ross@soi.city.ac.uk
Safe Haskell	Safe-Infered

Data.Functor.Compose

Description

Composition of functors.

Synopsis

newtype Compose f g a = Compose {
- getCompose :: f (g a)
}

Documentation

newtype Compose f g a Source

Right-to-left composition of functors. The composition of applicative functors is always applicative, but the composition of monads is not always a monad.

Constructors

Compose

Fields

getCompose :: f (g a)

Instances

(Functor f, Functor g) => Functor (Compose f g)

(Applicative f, Applicative g) => Applicative (Compose f g)

(Foldable f, Foldable g) => Foldable (Compose f g)

(Traversable f, Traversable g) => Traversable (Compose f g)

(Alternative f, Applicative g) => Alternative (Compose f g)