Trait Functor 

pub trait Functor: HKT {
    // Required method
    fn fmap<A, B>(fa: Self::Of<A>, f: impl Fn(A) -> B) -> Self::Of<B>;
}

Covariant functor: lifts a function A -> B into F<A> -> F<B>.

Required Methods

fn fmap<A, B>(fa: Self::Of<A>, f: impl Fn(A) -> B) -> Self::Of<B>

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl Functor for IdentityF

impl Functor for NonEmptyVecF

Available on crate features alloc or std only.

impl Functor for OptionF

impl Functor for VecF

Available on crate features alloc or std only.

impl<E> Functor for EnvF<E>

impl<E> Functor for ResultF<E>

impl<F, G> Functor for ComposeF<F, G>

where F: Functor, G: Functor,

Functors compose: if F and G are both Functors, so is F . G.

impl<F> Functor for CofreeF<F>

where F: HKT + Functor,

impl<F> Functor for FixF<F>

where F: HKT + Functor,

impl<F> Functor for FreeF<F>

where F: HKT + Functor,