transformers-compat-0.4.0.3: A small compatibility shim exposing the new types from transformers 0.3 and 0.4 to older Haskell platforms.

Copyright(c) Ross Paterson 2014
LicenseBSD-style (see the file LICENSE)
Maintainerross@soi.city.ac.uk
Stabilityexperimental
Portabilityportable
Safe HaskellSafe-Inferred
LanguageHaskell98

Data.Functor.Sum

Description

Sums, lifted to functors.

Synopsis

Documentation

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)