lens-4.13.2: Lenses, Folds and Traversals

Copyright(C) 2012-2016 Edward Kmett
LicenseBSD-style (see the file LICENSE)
MaintainerEdward Kmett <ekmett@gmail.com>
Stabilityprovisional
Portabilitynon-portable
Safe HaskellSafe
LanguageHaskell98

Control.Lens.Internal.Setter

Contents

Description

 

Synopsis

Setters

class (Applicative f, Distributive f, Traversable f) => Settable f where Source

Anything Settable must be isomorphic to the Identity Functor.

Minimal complete definition

untainted

Methods

untainted :: f a -> a Source

untaintedDot :: Profunctor p => p a (f b) -> p a b Source

taintedDot :: Profunctor p => p a b -> p a (f b) Source

Instances

Settable Identity Source

So you can pass our Setter into combinators from other lens libraries.

Methods

untainted :: Identity a -> a Source

untaintedDot :: Profunctor p => p a (Identity b) -> p a b Source

taintedDot :: Profunctor p => p a b -> p a (Identity b) Source

Settable f => Settable (Backwards f) Source

backwards

Methods

untainted :: Backwards f a -> a Source

untaintedDot :: Profunctor p => p a (Backwards f b) -> p a b Source

taintedDot :: Profunctor p => p a b -> p a (Backwards f b) Source

(Settable f, Settable g) => Settable (Compose f g) Source 

Methods

untainted :: Compose f g a -> a Source

untaintedDot :: Profunctor p => p a (Compose f g b) -> p a b Source

taintedDot :: Profunctor p => p a b -> p a (Compose f g b) Source