Struct naan::fun::compose::Compose

pub struct Compose<F, G, X> { /* private fields */ }

Struct capturing Sized function composition.

Implements F1/F1Once when F and G implement F1/F1Once.

X is the “erased” type returned by F and passed to G, stored as PhantomData to make trait implementation simpler.

For examples, see F1Once::chain.

Implementations

impl<F, G, X> Compose<F, G, X>

pub fn compose<A, B>(f: F, g: G) -> Selfwhere F: F1Once<A, Ret = X>, G: F1Once<X, Ret = B>,

See Compose

pub fn chain<A, B, X2, G2>(self, g2: G2) -> Compose<Compose<F, G, X>, G2, X2>where F: F1Once<A, Ret = X>, G: F1Once<X, Ret = X2>, G2: F1Once<X2, Ret = B>,

See F1Once::chain

Trait Implementations

impl<F, G, A, X, C> F1<A> for Compose<F, G, X>where F: F1<A, Ret = X>, G: F1<X, Ret = C>,

fn call(&self, a: A) -> C

Call the function

impl<F, G, A, X, C> F1Once<A> for Compose<F, G, X>where F: F1Once<A, Ret = X>, G: F1Once<X, Ret = C>,

type Ret = C

The type returned by this function

fn call1(self, a: A) -> C

Call the function

fn chain<G, C>(self, g: G) -> Compose<Self, G, Self::Ret>where Self: Sized, G: F1Once<Self::Ret, Ret = C>,

Create a new function that passes this one’s output to g’s input