Struct futures::task::FutureObj [−][src]
A custom trait object for polling futures, roughly akin to
Box<dyn Future<Output = T> + Send + 'a>.
This custom trait object was introduced as currently it is not possible to
take dyn Trait by value and Box<dyn Trait> is not available in no_std
contexts.
You should generally not need to use this type outside of no_std or when
implementing Spawn, consider using BoxFuture instead.
Implementations
impl<'a, T> FutureObj<'a, T>[src]
pub fn new<F>(f: F) -> FutureObj<'a, T>ⓘ where
F: UnsafeFutureObj<'a, T> + Send, [src]
F: UnsafeFutureObj<'a, T> + Send,
Create a FutureObj from a custom trait object representation.
Trait Implementations
impl<'_, T> Debug for FutureObj<'_, T>[src]
impl<'a, F> From<Box<F, Global>> for FutureObj<'a, ()> where
F: 'a + Future<Output = ()> + Send, [src]
F: 'a + Future<Output = ()> + Send,
impl<'a> From<Box<dyn Future<Output = ()> + 'a + Send, Global>> for FutureObj<'a, ()>[src]
impl<'a, T> From<FutureObj<'a, T>> for LocalFutureObj<'a, T>[src]
pub fn from(f: FutureObj<'a, T>) -> LocalFutureObj<'a, T>ⓘNotable traits for LocalFutureObj<'_, T>
impl<'_, T> Future for LocalFutureObj<'_, T> type Output = T;[src]
Notable traits for LocalFutureObj<'_, T>
impl<'_, T> Future for LocalFutureObj<'_, T> type Output = T;impl<'a, F> From<Pin<Box<F, Global>>> for FutureObj<'a, ()> where
F: 'a + Future<Output = ()> + Send, [src]
F: 'a + Future<Output = ()> + Send,
impl<'a> From<Pin<Box<dyn Future<Output = ()> + 'a + Send, Global>>> for FutureObj<'a, ()>[src]
pub fn from(
boxed: Pin<Box<dyn Future<Output = ()> + 'a + Send, Global>>
) -> FutureObj<'a, ()>ⓘ[src]
boxed: Pin<Box<dyn Future<Output = ()> + 'a + Send, Global>>
) -> FutureObj<'a, ()>ⓘ
impl<'_, T> Future for FutureObj<'_, T>[src]
type Output = T
The type of value produced on completion.
pub fn poll(self: Pin<&mut FutureObj<'_, T>>, cx: &mut Context<'_>) -> Poll<T>[src]
impl<'_, T> Send for FutureObj<'_, T>[src]
impl<'_, T> Unpin for FutureObj<'_, T>[src]
Auto Trait Implementations
impl<'a, T> !RefUnwindSafe for FutureObj<'a, T>
impl<'a, T> !Sync for FutureObj<'a, T>
impl<'a, T> !UnwindSafe for FutureObj<'a, T>
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> FutureExt for T where
T: Future + ?Sized, [src]
T: Future + ?Sized,
pub fn map<U, F>(self, f: F) -> Map<Self, F>ⓘ where
F: FnOnce(Self::Output) -> U, [src]
F: FnOnce(Self::Output) -> U,
pub fn map_into<U>(self) -> MapInto<Self, U>ⓘ where
Self::Output: Into<U>, [src]
Self::Output: Into<U>,
pub fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F>ⓘ where
F: FnOnce(Self::Output) -> Fut,
Fut: Future, [src]
F: FnOnce(Self::Output) -> Fut,
Fut: Future,
pub fn left_future<B>(self) -> Either<Self, B>ⓘ where
B: Future<Output = Self::Output>, [src]
B: Future<Output = Self::Output>,
pub fn right_future<A>(self) -> Either<A, Self>ⓘ where
A: Future<Output = Self::Output>, [src]
A: Future<Output = Self::Output>,
pub fn into_stream(self) -> IntoStream<Self>[src]
pub fn flatten(self) -> Flatten<Self>ⓘ where
Self::Output: Future, [src]
Self::Output: Future,
pub fn flatten_stream(self) -> FlattenStream<Self> where
Self::Output: Stream, [src]
Self::Output: Stream,
pub fn fuse(self) -> Fuse<Self>ⓘ[src]
pub fn inspect<F>(self, f: F) -> Inspect<Self, F>ⓘ where
F: FnOnce(&Self::Output), [src]
F: FnOnce(&Self::Output),
pub fn catch_unwind(self) -> CatchUnwind<Self>ⓘNotable traits for CatchUnwind<Fut>
impl<Fut> Future for CatchUnwind<Fut> where
Fut: Future + UnwindSafe, type Output = Result<<Fut as Future>::Output, Box<dyn Any + 'static + Send, Global>>; where
Self: UnwindSafe, [src]
Notable traits for CatchUnwind<Fut>
impl<Fut> Future for CatchUnwind<Fut> where
Fut: Future + UnwindSafe, type Output = Result<<Fut as Future>::Output, Box<dyn Any + 'static + Send, Global>>;Self: UnwindSafe,
pub fn shared(self) -> Shared<Self>ⓘ where
Self::Output: Clone, [src]
Self::Output: Clone,
pub fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)[src]
pub fn boxed<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a + Send, Global>>ⓘ where
Self: Send + 'a, [src]
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a + Send, Global>>ⓘ where
Self: Send + 'a,
pub fn boxed_local<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>>ⓘ where
Self: 'a, [src]
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>>ⓘ where
Self: 'a,
pub fn unit_error(self) -> UnitError<Self>ⓘ[src]
pub fn never_error(self) -> NeverError<Self>ⓘNotable traits for NeverError<Fut>
impl<Fut> Future for NeverError<Fut> where
Map<Fut, OkFn<Infallible>>: Future, type Output = <Map<Fut, OkFn<Infallible>> as Future>::Output;[src]
Notable traits for NeverError<Fut>
impl<Fut> Future for NeverError<Fut> where
Map<Fut, OkFn<Infallible>>: Future, type Output = <Map<Fut, OkFn<Infallible>> as Future>::Output;pub fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output> where
Self: Unpin, [src]
Self: Unpin,
pub fn now_or_never(self) -> Option<Self::Output>[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
🔬 This is a nightly-only experimental API. (
into_future)The output that the future will produce on completion.
type Future = F
🔬 This is a nightly-only experimental API. (
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<Fut> TryFutureExt for Fut where
Fut: TryFuture + ?Sized, [src]
Fut: TryFuture + ?Sized,
pub fn flatten_sink<Item>(self) -> FlattenSink<Self, Self::Ok> where
Self::Ok: Sink<Item>,
<Self::Ok as Sink<Item>>::Error == Self::Error, [src]
Self::Ok: Sink<Item>,
<Self::Ok as Sink<Item>>::Error == Self::Error,
pub fn map_ok<T, F>(self, f: F) -> MapOk<Self, F>ⓘ where
F: FnOnce(Self::Ok) -> T, [src]
F: FnOnce(Self::Ok) -> T,
pub fn map_ok_or_else<T, E, F>(self, e: E, f: F) -> MapOkOrElse<Self, F, E>ⓘNotable traits for MapOkOrElse<Fut, F, G>
impl<Fut, F, G> Future for MapOkOrElse<Fut, F, G> where
Map<IntoFuture<Fut>, ChainFn<MapOkFn<F>, ChainFn<MapErrFn<G>, MergeResultFn>>>: Future, type Output = <Map<IntoFuture<Fut>, ChainFn<MapOkFn<F>, ChainFn<MapErrFn<G>, MergeResultFn>>> as Future>::Output; where
E: FnOnce(Self::Error) -> T,
F: FnOnce(Self::Ok) -> T, [src]
Notable traits for MapOkOrElse<Fut, F, G>
impl<Fut, F, G> Future for MapOkOrElse<Fut, F, G> where
Map<IntoFuture<Fut>, ChainFn<MapOkFn<F>, ChainFn<MapErrFn<G>, MergeResultFn>>>: Future, type Output = <Map<IntoFuture<Fut>, ChainFn<MapOkFn<F>, ChainFn<MapErrFn<G>, MergeResultFn>>> as Future>::Output;E: FnOnce(Self::Error) -> T,
F: FnOnce(Self::Ok) -> T,
pub fn map_err<E, F>(self, f: F) -> MapErr<Self, F>ⓘ where
F: FnOnce(Self::Error) -> E, [src]
F: FnOnce(Self::Error) -> E,
pub fn err_into<E>(self) -> ErrInto<Self, E>ⓘ where
Self::Error: Into<E>, [src]
Self::Error: Into<E>,
pub fn ok_into<U>(self) -> OkInto<Self, U>ⓘ where
Self::Ok: Into<U>, [src]
Self::Ok: Into<U>,
pub fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F>ⓘ where
F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>, [src]
F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,
pub fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F>ⓘ where
F: FnOnce(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>, [src]
F: FnOnce(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,
pub fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F>ⓘ where
F: FnOnce(&Self::Ok), [src]
F: FnOnce(&Self::Ok),
pub fn inspect_err<F>(self, f: F) -> InspectErr<Self, F>ⓘNotable traits for InspectErr<Fut, F>
impl<Fut, F> Future for InspectErr<Fut, F> where
Inspect<IntoFuture<Fut>, InspectErrFn<F>>: Future, type Output = <Inspect<IntoFuture<Fut>, InspectErrFn<F>> as Future>::Output; where
F: FnOnce(&Self::Error), [src]
Notable traits for InspectErr<Fut, F>
impl<Fut, F> Future for InspectErr<Fut, F> where
Inspect<IntoFuture<Fut>, InspectErrFn<F>>: Future, type Output = <Inspect<IntoFuture<Fut>, InspectErrFn<F>> as Future>::Output;F: FnOnce(&Self::Error),
pub fn try_flatten(self) -> TryFlatten<Self, Self::Ok>ⓘNotable traits for TryFlatten<Fut1, Fut2>
impl<Fut1, Fut2> Future for TryFlatten<Fut1, Fut2> where
TryFlatten<Fut1, Fut2>: Future, type Output = <TryFlatten<Fut1, Fut2> as Future>::Output; where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error, [src]
Notable traits for TryFlatten<Fut1, Fut2>
impl<Fut1, Fut2> Future for TryFlatten<Fut1, Fut2> where
TryFlatten<Fut1, Fut2>: Future, type Output = <TryFlatten<Fut1, Fut2> as Future>::Output;Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,
pub fn try_flatten_stream(self) -> TryFlattenStream<Self> where
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error == Self::Error, [src]
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error == Self::Error,
pub fn unwrap_or_else<F>(self, f: F) -> UnwrapOrElse<Self, F>ⓘNotable traits for UnwrapOrElse<Fut, F>
impl<Fut, F> Future for UnwrapOrElse<Fut, F> where
Map<IntoFuture<Fut>, UnwrapOrElseFn<F>>: Future, type Output = <Map<IntoFuture<Fut>, UnwrapOrElseFn<F>> as Future>::Output; where
F: FnOnce(Self::Error) -> Self::Ok, [src]
Notable traits for UnwrapOrElse<Fut, F>
impl<Fut, F> Future for UnwrapOrElse<Fut, F> where
Map<IntoFuture<Fut>, UnwrapOrElseFn<F>>: Future, type Output = <Map<IntoFuture<Fut>, UnwrapOrElseFn<F>> as Future>::Output;F: FnOnce(Self::Error) -> Self::Ok,
pub fn into_future(self) -> IntoFuture<Self>ⓘNotable traits for IntoFuture<Fut>
impl<Fut> Future for IntoFuture<Fut> where
Fut: TryFuture, type Output = Result<<Fut as TryFuture>::Ok, <Fut as TryFuture>::Error>;[src]
Notable traits for IntoFuture<Fut>
impl<Fut> Future for IntoFuture<Fut> where
Fut: TryFuture, type Output = Result<<Fut as TryFuture>::Ok, <Fut as TryFuture>::Error>;pub fn try_poll_unpin(
&mut self,
cx: &mut Context<'_>
) -> Poll<Result<Self::Ok, Self::Error>> where
Self: Unpin, [src]
&mut self,
cx: &mut Context<'_>
) -> Poll<Result<Self::Ok, Self::Error>> where
Self: Unpin,
impl<T, U> TryInto<U> for T where
U: TryFrom<T>, [src]
U: TryFrom<T>,