[][src]Struct futures::future::Shared

#[must_use = "futures do nothing unless you `.await` or poll them"]
pub struct Shared<Fut> where
    Fut: Future
{ /* fields omitted */ }

Future for the shared method.

Methods

impl<Fut> Shared<Fut> where
    Fut: Future,
    <Fut as Future>::Output: Clone
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pub fn peek(&self) -> Option<&<Fut as Future>::Output>[src]

Returns Some containing a reference to this Shared's output if it has already been computed by a clone or None if it hasn't been computed yet or this Shared already returned its output from poll.

Trait Implementations

impl<Fut> Drop for Shared<Fut> where
    Fut: Future
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impl<Fut> Clone for Shared<Fut> where
    Fut: Future
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impl<Fut> Unpin for Shared<Fut> where
    Fut: Future
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impl<Fut> Debug for Shared<Fut> where
    Fut: Future
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impl<Fut> FusedFuture for Shared<Fut> where
    Fut: Future,
    <Fut as Future>::Output: Clone
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impl<Fut> Future for Shared<Fut> where
    Fut: Future,
    <Fut as Future>::Output: Clone
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type Output = <Fut as Future>::Output

The type of value produced on completion.

Auto Trait Implementations

impl<Fut> Send for Shared<Fut> where
    Fut: Send,
    <Fut as Future>::Output: Send + Sync

impl<Fut> Sync for Shared<Fut> where
    Fut: Send,
    <Fut as Future>::Output: Send + Sync

impl<Fut> !UnwindSafe for Shared<Fut>

impl<Fut> !RefUnwindSafe for Shared<Fut>

Blanket Implementations

impl<T> ToOwned for T where
    T: Clone
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type Owned = T

The resulting type after obtaining ownership.

impl<T, U> Into<U> for T where
    U: From<T>, 
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impl<T> From<T> for T[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
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type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<T> BorrowMut<T> for T where
    T: ?Sized
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impl<T> Borrow<T> for T where
    T: ?Sized
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impl<T> Any for T where
    T: 'static + ?Sized
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impl<F, T, E> TryFuture for F where
    F: Future<Output = Result<T, E>> + ?Sized
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type Ok = T

The type of successful values yielded by this future

type Error = E

The type of failures yielded by this future

impl<T> FutureExt for T where
    T: Future + ?Sized
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impl<Fut> TryFutureExt for Fut where
    Fut: TryFuture + ?Sized
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