Function map

pub fn map<Brand, F, A, B>(
    f: F,
) -> impl Fn(Apply<Brand, (A,)>) -> Apply<Brand, (B,)>
where
    Brand: Kind<(A,)> + Kind<(B,)> + Functor,
    F: Fn(A) -> B,

forall a b. Functor f => (a -> b) -> f a -> f b