Trait Functor

pub trait Functor {
    type Layer<X>;

    // Required method
    fn fmap<F, A, B>(input: Self::Layer<A>, f: F) -> Self::Layer<B>
       where F: FnMut(A) -> B;
}

Required Associated Types

type Layer<X>

Required Methods

fn fmap<F, A, B>(input: Self::Layer<A>, f: F) -> Self::Layer<B>

where F: FnMut(A) -> B,

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl Functor for Option<PartiallyApplied>

type Layer<X> = Option<X>

fn fmap<F, A, B>(input: Self::Layer<A>, f: F) -> Self::Layer<B>

where F: FnMut(A) -> B,

impl<Fst> Functor for (Fst, PartiallyApplied)

type Layer<X> = (Fst, X)

fn fmap<F, A, B>(input: Self::Layer<A>, f: F) -> Self::Layer<B>

where F: FnMut(A) -> B,

Implementors

impl<F1: Functor, F2: Functor> Functor for Compose<F1, F2>

type Layer<X> = <F1 as Functor>::Layer<<F2 as Functor>::Layer<X>>