Unbound.Generics.LocallyNameless.Internal.Iso

Documentation

data Exchange a b s t

Constructors

Exchange (s -> a) (b -> t)

Instances

Profunctor (Exchange a b)

Methods

dimap :: (a -> b) -> (c -> d) -> Exchange a b b c -> Exchange a b a d

lmap :: (a -> b) -> Exchange a b b c -> Exchange a b a c

rmap :: (b -> c) -> Exchange a b a b -> Exchange a b a c

(#.) :: Coercible * c b => (b -> c) -> Exchange a b a b -> Exchange a b a c

(.#) :: Coercible * b a => Exchange a b b c -> (a -> b) -> Exchange a b a c

type Iso s t a b = forall p f. (Profunctor p, Functor f) => p a (f b) -> p s (f t)

type AnIso s t a b = Exchange a b a (Identity b) -> Exchange a b s (Identity t)

iso :: (s -> a) -> (b -> t) -> Iso s t a b

from :: AnIso s t a b -> Iso b a t s

withIso :: AnIso s t a b -> ((s -> a) -> (b -> t) -> r) -> r