Enum futures_util::future::TryMaybeDone [−][src]
A future that may have completed with an error.
This is created by the try_maybe_done() function.
Variants
A not-yet-completed future
Done(Fut::Ok)The output of the completed future
The empty variant after the result of a TryMaybeDone has been
taken using the take_output method,
or if the future returned an error.
Implementations
impl<Fut: TryFuture> TryMaybeDone<Fut>[src]
pub fn output_mut(self: Pin<&mut Self>) -> Option<&mut Fut::Ok>[src]
Returns an Option containing a mutable reference to the output of the future.
The output of this method will be Some if and only if the inner
future has completed successfully and take_output
has not yet been called.
pub fn take_output(self: Pin<&mut Self>) -> Option<Fut::Ok>[src]
Attempt to take the output of a TryMaybeDone without driving it
towards completion.
Trait Implementations
impl<Fut: Debug + TryFuture> Debug for TryMaybeDone<Fut> where
Fut::Ok: Debug, [src]
Fut::Ok: Debug,
impl<Fut: TryFuture> FusedFuture for TryMaybeDone<Fut>[src]
fn is_terminated(&self) -> bool[src]
impl<Fut: TryFuture> Future for TryMaybeDone<Fut>[src]
type Output = Result<(), Fut::Error>
The type of value produced on completion.
fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output>[src]
impl<Fut: TryFuture + Unpin> Unpin for TryMaybeDone<Fut>[src]
Auto Trait Implementations
impl<Fut> RefUnwindSafe for TryMaybeDone<Fut> where
Fut: RefUnwindSafe,
<Fut as TryFuture>::Ok: RefUnwindSafe,
Fut: RefUnwindSafe,
<Fut as TryFuture>::Ok: RefUnwindSafe,
impl<Fut> Send for TryMaybeDone<Fut> where
Fut: Send,
<Fut as TryFuture>::Ok: Send,
Fut: Send,
<Fut as TryFuture>::Ok: Send,
impl<Fut> Sync for TryMaybeDone<Fut> where
Fut: Sync,
<Fut as TryFuture>::Ok: Sync,
Fut: Sync,
<Fut as TryFuture>::Ok: Sync,
impl<Fut> UnwindSafe for TryMaybeDone<Fut> where
Fut: UnwindSafe,
<Fut as TryFuture>::Ok: UnwindSafe,
Fut: UnwindSafe,
<Fut as TryFuture>::Ok: UnwindSafe,
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized, [src]
T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized, [src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized, [src]
T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T[src]
impl<T> From<T> for T[src]
impl<T, U> Into<U> for T where
U: From<T>, [src]
U: From<T>,
impl<F> IntoFuture for F where
F: Future, [src]
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[src]
impl<T, U> TryFrom<U> for T where
U: Into<T>, [src]
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>[src]
impl<F, T, E> TryFuture for F where
F: Future<Output = Result<T, E>> + ?Sized, [src]
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>[src]
self: Pin<&mut F>,
cx: &mut Context<'_>
) -> Poll<<F as Future>::Output>
impl<T, U> TryInto<U> for T where
U: TryFrom<T>, [src]
U: TryFrom<T>,