Documentation

type Lens s t a b = Functor f => (a -> f b) -> s -> f t Source

type Traversal s t a b = Applicative f => (a -> f b) -> s -> f t Source

type Lens' s a = Functor f => (a -> f a) -> s -> f s Source

type Traversal' s a = Applicative f => (a -> f a) -> s -> f s Source

type Getting r s a = (a -> Const r a) -> s -> Const r s Source

type Setting s t a b = (a -> Identity b) -> s -> Identity t Source

view :: Getting a s a -> s -> a Source

over :: Setting s t a b -> (a -> b) -> s -> t Source

set :: Setting s t a b -> b -> s -> t Source