[−][src]Struct futures_util::future::Shared

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

Future for the shared method.

Methods

`impl<Fut> Shared<Fut> where Fut: Future, Fut::Output: Clone,` [src]

`pub fn peek(&self) -> Option<&Fut::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,` [src]

`fn drop(&mut self)`[src]

`impl<Fut: Future> Unpin for Shared<Fut>`[src]

`impl<Fut> Clone for Shared<Fut> where Fut: Future,` [src]

`fn clone(&self) -> Self`[src]

`fn clone_from(&mut self, source: &Self)`1.0.0[src]

`impl<Fut: Future> Debug for Shared<Fut>`[src]

`fn fmt(&self, f: &mut Formatter) -> Result`[src]

`impl<Fut> Future for Shared<Fut> where Fut: Future, Fut::Output: Clone,` [src]

`type Output = Fut::Output`

The type of value produced on completion.

`fn poll(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output>`[src]

`impl<Fut> FusedFuture for Shared<Fut> where Fut: Future, Fut::Output: Clone,` [src]

`fn is_terminated(&self) -> bool`[src]

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> FutureExt for T where T: Future + ?Sized,` [src]

ⓘImportant traits for Map<Fut, F>
Important traits for Map<Fut, F>
`impl<Fut, F, T> Future for Map<Fut, F> where Fut: Future, F: FnOnce(Fut::Output) -> T, type Output = T;`
`fn map<U, F>(self, f: F) -> Map<Self, F> where F: FnOnce(Self::Output) -> U, Self: Sized,` [src]

ⓘImportant traits for Then<Fut1, Fut2, F>
Important traits for Then<Fut1, Fut2, F>
`impl<Fut1, Fut2, F> Future for Then<Fut1, Fut2, F> where Fut1: Future, Fut2: Future, F: FnOnce(Fut1::Output) -> Fut2, type Output = Fut2::Output;`
`fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where F: FnOnce(Self::Output) -> Fut, Fut: Future, Self: Sized,` [src]

ⓘImportant traits for Either<A, B>
Important traits for Either<A, B>
`impl<A, B> Future for Either<A, B> where A: Future, B: Future<Output = A::Output>, type Output = A::Output;`
`fn left_future(self) -> Either<Self, B> where B: Future<Output = Self::Output>, Self: Sized,` [src]

ⓘImportant traits for Either<A, B>
Important traits for Either<A, B>
`impl<A, B> Future for Either<A, B> where A: Future, B: Future<Output = A::Output>, type Output = A::Output;`
`fn right_future<A>(self) -> Either<A, Self> where A: Future<Output = Self::Output>, Self: Sized,` [src]

`fn into_stream(self) -> IntoStream<Self> where Self: Sized,` [src]

ⓘImportant traits for Flatten<Fut>
Important traits for Flatten<Fut>
`impl<Fut> Future for Flatten<Fut> where Fut: Future, Fut::Output: Future, type Output = <Fut::Output as Future>::Output;`
`fn flatten(self) -> Flatten<Self> where Self::Output: Future, Self: Sized,` [src]

`fn flatten_stream(self) -> FlattenStream<Self> where Self::Output: Stream, Self: Sized,` [src]

ⓘImportant traits for Fuse<Fut>
Important traits for Fuse<Fut>
`impl<Fut: Future> Future for Fuse<Fut> type Output = Fut::Output;`
`fn fuse(self) -> Fuse<Self> where Self: Sized,` [src]

ⓘImportant traits for Inspect<Fut, F>
Important traits for Inspect<Fut, F>
`impl<Fut, F> Future for Inspect<Fut, F> where Fut: Future, F: FnOnce(&Fut::Output), type Output = Fut::Output;`
`fn inspect<F>(self, f: F) -> Inspect<Self, F> where F: FnOnce(&Self::Output), Self: Sized,` [src]

ⓘImportant traits for CatchUnwind<Fut>
Important traits for CatchUnwind<Fut>
`impl<Fut> Future for CatchUnwind<Fut> where Fut: Future + UnwindSafe, type Output = Result<Fut::Output, Box<dyn Any + Send>>;`
`fn catch_unwind(self) -> CatchUnwind<Self> where Self: Sized + UnwindSafe,` [src]

ⓘImportant traits for Shared<Fut>
Important traits for Shared<Fut>
`impl<Fut> Future for Shared<Fut> where Fut: Future, Fut::Output: Clone, type Output = Fut::Output;`
`fn shared(self) -> Shared<Self> where Self: Sized, Self::Output: Clone,` [src]

`fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>) where Self: Sized,` [src]

`fn boxed<'a>(self) -> BoxFuture<'a, Self::Output> where Self: Sized + Send + 'a,` [src]

`fn boxed_local<'a>(self) -> LocalBoxFuture<'a, Self::Output> where Self: Sized + 'a,` [src]

ⓘImportant traits for UnitError<Fut>
Important traits for UnitError<Fut>
`impl<Fut, T> Future for UnitError<Fut> where Fut: Future<Output = T>, type Output = Result<T, ()>;`
`fn unit_error(self) -> UnitError<Self> where Self: Sized,` [src]

ⓘImportant traits for NeverError<Fut>
Important traits for NeverError<Fut>
`impl<Fut, T> Future for NeverError<Fut> where Fut: Future<Output = T>, type Output = Result<T, Never>;`
`fn never_error(self) -> NeverError<Self> where Self: Sized,` [src]

`fn poll_unpin(&mut self, cx: &mut Context) -> Poll<Self::Output> where Self: Unpin,` [src]

`fn now_or_never(self) -> Option<Self::Output> where Self: Sized,` [src]

`impl<Fut> TryFutureExt for Fut where Fut: TryFuture + ?Sized,` [src]

`fn flatten_sink<Item>(self) -> FlattenSink<Self, Self::Ok> where Self::Ok: Sink<Item, Error = Self::Error>, Self: Sized,` [src]

ⓘImportant traits for MapOk<Fut, F>
Important traits for MapOk<Fut, F>
`impl<Fut, F, T> Future for MapOk<Fut, F> where Fut: TryFuture, F: FnOnce(Fut::Ok) -> T, type Output = Result<T, Fut::Error>;`
`fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where F: FnOnce(Self::Ok) -> T, Self: Sized,` [src]

ⓘImportant traits for MapErr<Fut, F>
Important traits for MapErr<Fut, F>
`impl<Fut, F, E> Future for MapErr<Fut, F> where Fut: TryFuture, F: FnOnce(Fut::Error) -> E, type Output = Result<Fut::Ok, E>;`
`fn map_err<E, F>(self, f: F) -> MapErr<Self, F> where F: FnOnce(Self::Error) -> E, Self: Sized,` [src]

ⓘImportant traits for ErrInto<Fut, E>
Important traits for ErrInto<Fut, E>
`impl<Fut, E> Future for ErrInto<Fut, E> where Fut: TryFuture, Fut::Error: Into<E>, type Output = Result<Fut::Ok, E>;`
`fn err_into<E>(self) -> ErrInto<Self, E> where Self: Sized, Self::Error: Into<E>,` [src]

ⓘImportant traits for AndThen<Fut1, Fut2, F>
Important traits for AndThen<Fut1, Fut2, F>
`impl<Fut1, Fut2, F> Future for AndThen<Fut1, Fut2, F> where Fut1: TryFuture, Fut2: TryFuture<Error = Fut1::Error>, F: FnOnce(Fut1::Ok) -> Fut2, type Output = Result<Fut2::Ok, Fut2::Error>;`
`fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where F: FnOnce(Self::Ok) -> Fut, Fut: TryFuture<Error = Self::Error>, Self: Sized,` [src]

ⓘImportant traits for OrElse<Fut1, Fut2, F>
Important traits for OrElse<Fut1, Fut2, F>
`impl<Fut1, Fut2, F> Future for OrElse<Fut1, Fut2, F> where Fut1: TryFuture, Fut2: TryFuture<Ok = Fut1::Ok>, F: FnOnce(Fut1::Error) -> Fut2, type Output = Result<Fut2::Ok, Fut2::Error>;`
`fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> where F: FnOnce(Self::Error) -> Fut, Fut: TryFuture<Ok = Self::Ok>, Self: Sized,` [src]

ⓘImportant traits for InspectOk<Fut, F>
Important traits for InspectOk<Fut, F>
`impl<Fut, F> Future for InspectOk<Fut, F> where Fut: TryFuture, F: FnOnce(&Fut::Ok), type Output = Result<Fut::Ok, Fut::Error>;`
`fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> where F: FnOnce(&Self::Ok), Self: Sized,` [src]

ⓘImportant traits for InspectErr<Fut, F>
Important traits for InspectErr<Fut, F>
`impl<Fut, F> Future for InspectErr<Fut, F> where Fut: TryFuture, F: FnOnce(&Fut::Error), type Output = Result<Fut::Ok, Fut::Error>;`
`fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where F: FnOnce(&Self::Error), Self: Sized,` [src]

`fn try_flatten_stream(self) -> TryFlattenStream<Self> where Self::Ok: TryStream<Error = Self::Error>, Self: Sized,` [src]

ⓘImportant traits for UnwrapOrElse<Fut, F>
Important traits for UnwrapOrElse<Fut, F>
`impl<Fut, F> Future for UnwrapOrElse<Fut, F> where Fut: TryFuture, F: FnOnce(Fut::Error) -> Fut::Ok, type Output = Fut::Ok;`
`fn unwrap_or_else<F>(self, f: F) -> UnwrapOrElse<Self, F> where Self: Sized, F: FnOnce(Self::Error) -> Self::Ok,` [src]

ⓘImportant traits for Compat<R>
Important traits for Compat<R>
`impl<R: AsyncRead03 + Unpin> Read for Compat<R>impl<W: AsyncWrite03 + Unpin> Write for Compat<W>`
`fn compat(self) -> Compat<Self> where Self: Sized + Unpin,` [src]

ⓘImportant traits for IntoFuture<Fut>
Important traits for IntoFuture<Fut>
`impl<Fut: TryFuture> Future for IntoFuture<Fut> type Output = Result<Fut::Ok, Fut::Error>;`
`fn into_future(self) -> IntoFuture<Self> where Self: Sized,` [src]

`fn try_poll_unpin( &mut self, cx: &mut Context ) -> Poll<Result<Self::Ok, Self::Error>> where Self: Unpin,` [src]

`impl<T> ToOwned for T where T: Clone,` [src]

`type Owned = T`

The resulting type after obtaining ownership.

`fn to_owned(&self) -> T`[src]

`fn clone_into(&self, target: &mut T)`[src]

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

`fn into(self) -> U`[src]

`impl<T> From<T> for T`[src]

`fn from(t: T) -> T`[src]

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

`type Error = Infallible`

The type returned in the event of a conversion error.

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

`impl<T, U> TryInto for T where U: TryFrom<T>,` [src]

`type Error = >::Error`

The type returned in the event of a conversion error.

`fn try_into(self) -> Result<U, >::Error>`[src]

`impl<T> BorrowMut<T> for T where T: ?Sized,` [src]

ⓘImportant traits for &'_ mut F
Important traits for &'_ mut F
`impl<'_, F> Future for &'_ mut F where F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;`
`fn borrow_mut(&mut self) -> &mut T`[src]

`impl<T> Borrow<T> for T where T: ?Sized,` [src]

ⓘImportant traits for &'_ mut F
Important traits for &'_ mut F
`impl<'_, F> Future for &'_ mut F where F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;`
`fn borrow(&self) -> &T`[src]

`impl<T> Any for T where T: 'static + ?Sized,` [src]

`fn type_id(&self) -> TypeId`[src]

`impl<F, T, E> TryFuture for F where F: Future<Output = Result<T, E>> + ?Sized,` [src]

`type Ok = T`

The type of successful values yielded by this future

`type Error = E`

The type of failures yielded by this future

`fn try_poll(self: Pin<&mut F>, cx: &mut Context) -> Poll<<F as Future>::Output>`[src]

[−][src]Struct futures_util::future::Shared

Methods

impl<Fut> Shared<Fut> where Fut: Future, Fut::Output: Clone, [src]

pub fn peek(&self) -> Option<&Fut::Output>[src]

Trait Implementations

impl<Fut> Drop for Shared<Fut> where Fut: Future, [src]

fn drop(&mut self)[src]

impl<Fut: Future> Unpin for Shared<Fut>[src]

impl<Fut> Clone for Shared<Fut> where Fut: Future, [src]

fn clone(&self) -> Self[src]

fn clone_from(&mut self, source: &Self)1.0.0[src]

impl<Fut: Future> Debug for Shared<Fut>[src]

fn fmt(&self, f: &mut Formatter) -> Result[src]

impl<Fut> Future for Shared<Fut> where Fut: Future, Fut::Output: Clone, [src]

type Output = Fut::Output

fn poll(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output>[src]

impl<Fut> FusedFuture for Shared<Fut> where Fut: Future, Fut::Output: Clone, [src]

fn is_terminated(&self) -> bool[src]

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> FutureExt for T where T: Future + ?Sized, [src]

ⓘImportant traits for Map<Fut, F>Important traits for Map<Fut, F>impl<Fut, F, T> Future for Map<Fut, F> where Fut: Future, F: FnOnce(Fut::Output) -> T, type Output = T;fn map<U, F>(self, f: F) -> Map<Self, F> where F: FnOnce(Self::Output) -> U, Self: Sized, [src]

Important traits for Map<Fut, F>

Important traits for Then<Fut1, Fut2, F>

ⓘImportant traits for Either<A, B>Important traits for Either<A, B>impl<A, B> Future for Either<A, B> where A: Future, B: Future<Output = A::Output>, type Output = A::Output;fn left_future<B>(self) -> Either<Self, B> where B: Future<Output = Self::Output>, Self: Sized, [src]

Important traits for Either<A, B>

ⓘImportant traits for Either<A, B>Important traits for Either<A, B>impl<A, B> Future for Either<A, B> where A: Future, B: Future<Output = A::Output>, type Output = A::Output;fn right_future<A>(self) -> Either<A, Self> where A: Future<Output = Self::Output>, Self: Sized, [src]

Important traits for Either<A, B>

fn into_stream(self) -> IntoStream<Self> where Self: Sized, [src]

ⓘImportant traits for Flatten<Fut>Important traits for Flatten<Fut>impl<Fut> Future for Flatten<Fut> where Fut: Future, Fut::Output: Future, type Output = <Fut::Output as Future>::Output;fn flatten(self) -> Flatten<Self> where Self::Output: Future, Self: Sized, [src]

Important traits for Flatten<Fut>

fn flatten_stream(self) -> FlattenStream<Self> where Self::Output: Stream, Self: Sized, [src]

ⓘImportant traits for Fuse<Fut>Important traits for Fuse<Fut>impl<Fut: Future> Future for Fuse<Fut> type Output = Fut::Output;fn fuse(self) -> Fuse<Self> where Self: Sized, [src]

Important traits for Fuse<Fut>

ⓘImportant traits for Inspect<Fut, F>Important traits for Inspect<Fut, F>impl<Fut, F> Future for Inspect<Fut, F> where Fut: Future, F: FnOnce(&Fut::Output), type Output = Fut::Output;fn inspect<F>(self, f: F) -> Inspect<Self, F> where F: FnOnce(&Self::Output), Self: Sized, [src]

Important traits for Inspect<Fut, F>

ⓘImportant traits for CatchUnwind<Fut>Important traits for CatchUnwind<Fut>impl<Fut> Future for CatchUnwind<Fut> where Fut: Future + UnwindSafe, type Output = Result<Fut::Output, Box<dyn Any + Send>>;fn catch_unwind(self) -> CatchUnwind<Self> where Self: Sized + UnwindSafe, [src]

Important traits for CatchUnwind<Fut>

ⓘImportant traits for Shared<Fut>Important traits for Shared<Fut>impl<Fut> Future for Shared<Fut> where Fut: Future, Fut::Output: Clone, type Output = Fut::Output;fn shared(self) -> Shared<Self> where Self: Sized, Self::Output: Clone, [src]

Important traits for Shared<Fut>

fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>) where Self: Sized, [src]

fn boxed<'a>(self) -> BoxFuture<'a, Self::Output> where Self: Sized + Send + 'a, [src]

fn boxed_local<'a>(self) -> LocalBoxFuture<'a, Self::Output> where Self: Sized + 'a, [src]

ⓘImportant traits for UnitError<Fut>Important traits for UnitError<Fut>impl<Fut, T> Future for UnitError<Fut> where Fut: Future<Output = T>, type Output = Result<T, ()>;fn unit_error(self) -> UnitError<Self> where Self: Sized, [src]

Important traits for UnitError<Fut>

ⓘImportant traits for NeverError<Fut>Important traits for NeverError<Fut>impl<Fut, T> Future for NeverError<Fut> where Fut: Future<Output = T>, type Output = Result<T, Never>;fn never_error(self) -> NeverError<Self> where Self: Sized, [src]

Important traits for NeverError<Fut>

fn poll_unpin(&mut self, cx: &mut Context) -> Poll<Self::Output> where Self: Unpin, [src]

fn now_or_never(self) -> Option<Self::Output> where Self: Sized, [src]

impl<Fut> TryFutureExt for Fut where Fut: TryFuture + ?Sized, [src]

fn flatten_sink<Item>(self) -> FlattenSink<Self, Self::Ok> where Self::Ok: Sink<Item, Error = Self::Error>, Self: Sized, [src]

ⓘImportant traits for MapOk<Fut, F>Important traits for MapOk<Fut, F>impl<Fut, F, T> Future for MapOk<Fut, F> where Fut: TryFuture, F: FnOnce(Fut::Ok) -> T, type Output = Result<T, Fut::Error>;fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where F: FnOnce(Self::Ok) -> T, Self: Sized, [src]

Important traits for MapOk<Fut, F>

ⓘImportant traits for MapErr<Fut, F>Important traits for MapErr<Fut, F>impl<Fut, F, E> Future for MapErr<Fut, F> where Fut: TryFuture, F: FnOnce(Fut::Error) -> E, type Output = Result<Fut::Ok, E>;fn map_err<E, F>(self, f: F) -> MapErr<Self, F> where F: FnOnce(Self::Error) -> E, Self: Sized, [src]

Important traits for MapErr<Fut, F>

ⓘImportant traits for ErrInto<Fut, E>Important traits for ErrInto<Fut, E>impl<Fut, E> Future for ErrInto<Fut, E> where Fut: TryFuture, Fut::Error: Into<E>, type Output = Result<Fut::Ok, E>;fn err_into<E>(self) -> ErrInto<Self, E> where Self: Sized, Self::Error: Into<E>, [src]

Important traits for ErrInto<Fut, E>

Important traits for AndThen<Fut1, Fut2, F>

Important traits for OrElse<Fut1, Fut2, F>

Important traits for InspectOk<Fut, F>

Important traits for InspectErr<Fut, F>

fn try_flatten_stream(self) -> TryFlattenStream<Self> where Self::Ok: TryStream<Error = Self::Error>, Self: Sized, [src]

Important traits for UnwrapOrElse<Fut, F>

ⓘImportant traits for Compat<R>Important traits for Compat<R>impl<R: AsyncRead03 + Unpin> Read for Compat<R>impl<W: AsyncWrite03 + Unpin> Write for Compat<W>fn compat(self) -> Compat<Self> where Self: Sized + Unpin, [src]

Important traits for Compat<R>

ⓘImportant traits for IntoFuture<Fut>Important traits for IntoFuture<Fut>impl<Fut: TryFuture> Future for IntoFuture<Fut> type Output = Result<Fut::Ok, Fut::Error>;fn into_future(self) -> IntoFuture<Self> where Self: Sized, [src]

Important traits for IntoFuture<Fut>

fn try_poll_unpin( &mut self, cx: &mut Context) -> Poll<Result<Self::Ok, Self::Error>> where Self: Unpin, [src]

impl<T> ToOwned for T where T: Clone, [src]

type Owned = T

fn to_owned(&self) -> T[src]

fn clone_into(&self, target: &mut T)[src]

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

fn into(self) -> U[src]

impl<T> From<T> for T[src]

fn from(t: T) -> T[src]