Struct futures::future::Empty

#[must_use = "futures do nothing unless polled"]
pub struct Empty<T, E> { /* fields omitted */ }

A future which is never resolved.

This future can be created with the empty function.

Trait Implementations

impl<T, E> Future for Empty<T, E>

type Item = T

A successful value

type Error = E

An error

fn poll(&mut self, &mut Context) -> Result<Async<T>, E>

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

impl<T, E> Debug for Empty<T, E> where
    E: Debug,
    T: Debug, 

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.