Struct futures_channel::oneshot::Receiver [−][src]
A future for a value that will be provided by another asynchronous task.
This is created by the channel
function.
Implementations
impl<T> Receiver<T>
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pub fn close(&mut self)
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Gracefully close this receiver, preventing any subsequent attempts to send to it.
Any send
operation which happens after this method returns is
guaranteed to fail. After calling this method, you can use
Receiver::poll
to determine whether a
message had previously been sent.
pub fn try_recv(&mut self) -> Result<Option<T>, Canceled>
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Attempts to receive a message outside of the context of a task.
Does not schedule a task wakeup or have any other side effects.
A return value of None
must be considered immediately stale (out of
date) unless close
has been called first.
Returns an error if the sender was dropped.
Trait Implementations
impl<T: Debug> Debug for Receiver<T>
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impl<T> Drop for Receiver<T>
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impl<T> FusedFuture for Receiver<T>
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fn is_terminated(&self) -> bool
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impl<T> Future for Receiver<T>
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type Output = Result<T, Canceled>
The type of value produced on completion.
fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<T, Canceled>>
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impl<T> Unpin for Receiver<T>
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Auto Trait Implementations
impl<T> !RefUnwindSafe for Receiver<T>
impl<T> Send for Receiver<T> where
T: Send,
T: Send,
impl<T> Sync for Receiver<T> where
T: Send,
T: Send,
impl<T> !UnwindSafe for Receiver<T>
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<F> IntoFuture for F where
F: Future,
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F: Future,
type Output = <F as Future>::Output
into_future
)The output that the future will produce on completion.
type Future = F
into_future
)Which kind of future are we turning this into?
pub fn into_future(self) -> <F as IntoFuture>::Future
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<F, T, E> TryFuture for F where
F: Future<Output = Result<T, E>> + ?Sized,
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F: Future<Output = Result<T, E>> + ?Sized,
type Ok = T
The type of successful values yielded by this future
type Error = E
The type of failures yielded by this future
pub fn try_poll(
self: Pin<&mut F>,
cx: &mut Context<'_>
) -> Poll<<F as Future>::Output>
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self: Pin<&mut F>,
cx: &mut Context<'_>
) -> Poll<<F as Future>::Output>
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,