Struct futures_channel::oneshot::Receiver

source ·
pub struct Receiver<T> { /* private fields */ }
Expand description

A future for a value that will be provided by another asynchronous task.

This is created by the channel function.

Implementations§

source§

impl<T> Receiver<T>

source

pub fn close(&mut self)

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.

source

pub fn try_recv(&mut self) -> Result<Option<T>, Canceled>

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A return value of None must be considered immediately stale (out of date) unless close has been called first.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§

source§

impl<T> Debug for Receiver<T>

source§

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
source§

impl<T> Drop for Receiver<T>

source§

fn drop(&mut self)

Executes the destructor for this type. Read more
source§

impl<T> FusedFuture for Receiver<T>

source§

fn is_terminated(&self) -> bool

Returns true if the underlying future should no longer be polled.
source§

impl<T> Future for Receiver<T>

§

type Output = Result<T, Canceled>

The type of value produced on completion.
source§

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

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

impl<T> Unpin for Receiver<T>

Auto Trait Implementations§

§

impl<T> Freeze for Receiver<T>

§

impl<T> !RefUnwindSafe for Receiver<T>

§

impl<T> Send for Receiver<T>
where T: Send,

§

impl<T> Sync for Receiver<T>
where T: Send,

§

impl<T> !UnwindSafe for Receiver<T>

Blanket Implementations§

source§

impl<T> Any for T
where T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for T
where T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for T
where U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<F> IntoFuture for F
where F: Future,

§

type Output = <F as Future>::Output

The output that the future will produce on completion.
§

type IntoFuture = F

Which kind of future are we turning this into?
source§

fn into_future(self) -> <F as IntoFuture>::IntoFuture

Creates a future from a value. Read more
source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<F, T, E> TryFuture for F
where 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
source§

fn try_poll( self: Pin<&mut F>, cx: &mut Context<'_>, ) -> Poll<<F as Future>::Output>

Poll this TryFuture as if it were a Future. Read more
source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.