Struct pasts::Past

pub struct Past<S: Unpin, T, F: Future<Output = T>>(_, _, _);

A repeating async fn.

This is needed to both pin an async fn, and avoid panics of async fn being polled after it returns Poll::Ready(). Note that this does allocate upon creation.

Implementations

impl<S: Unpin, T, F: Future<Output = T>> Past<S, T, F>

pub fn new(state: S, async_fn: fn(_: &mut S) -> F) -> Self

Create a new repeating Unpin async function.

Trait Implementations

impl<S: Unpin, T, F: Future<Output = T>> Future for Past<S, T, F>

type Output = T

The type of value produced on completion.

fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<T>

Attempt to resolve the future to a final value, registering the current task for wakeup if the value is not yet available.