Data.Grid.Internal.Lens

Documentation

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

type Lens' s a = Lens s s a a

lens :: (s -> a) -> (s -> b -> t) -> Lens s t a b

cell :: forall dims a. IsGrid dims => Coord dims -> Lens' (Grid dims a) a

Focus an element of a Grid given its Coord