Data.Functor.Sum

Copyright (c) Ross Paterson 2014
License BSD-style (see the file LICENSE)
Maintainer [email protected]
Stability experimental
Portability portable
Safe Haskell Safe
Language Haskell98

Description

Sums, lifted to functors.

data Sum f g a Source

Lifted sum of functors.

Constructors

InL (f a)
InR (g a)

Instances

(Functor f, Functor g) => Functor (Sum f g)
(Foldable f, Foldable g) => Foldable (Sum f g)
(Traversable f, Traversable g) => Traversable (Sum f g)
(Show1 f, Show1 g) => Show1 (Sum f g)
(Read1 f, Read1 g) => Read1 (Sum f g)
(Ord1 f, Ord1 g) => Ord1 (Sum f g)
(Eq1 f, Eq1 g) => Eq1 (Sum f g)
(Eq1 f, Eq1 g, Eq a) => Eq (Sum f g a)
(Ord1 f, Ord1 g, Ord a) => Ord (Sum f g a)
(Read1 f, Read1 g, Read a) => Read (Sum f g a)
(Show1 f, Show1 g, Show a) => Show (Sum f g a)

© The University of Glasgow and others
Licensed under a BSD-style license (see top of the page).
https://downloads.haskell.org/~ghc/7.10.3/docs/html/libraries/transformers-0.4.2.0/Data-Functor-Sum.html