[−][src]Struct futures::future::FutureObj
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.
Methods
impl<'a, T> FutureObj<'a, T>[src]
ⓘImportant traits for FutureObj<'_, T>pub fn new<F>(f: F) -> FutureObj<'a, T> where
F: UnsafeFutureObj<'a, T> + Send, [src]
ⓘImportant traits for FutureObj<'_, T>
F: UnsafeFutureObj<'a, T> + Send,
Create a FutureObj from a custom trait object representation.
Trait Implementations
impl<'_, T> Unpin for FutureObj<'_, T>[src]
impl<'_, T> Send for FutureObj<'_, T>[src]
impl<'_, T> Debug for FutureObj<'_, T>[src]
impl<'_, T> Future for FutureObj<'_, T>[src]
type Output = T
The type of value produced on completion.
fn poll(self: Pin<&mut FutureObj<'_, T>>, cx: &mut Context) -> Poll<T>[src]
impl<'a, T> From<FutureObj<'a, T>> for LocalFutureObj<'a, T>[src]
ⓘImportant traits for LocalFutureObj<'_, T>fn from(f: FutureObj<'a, T>) -> LocalFutureObj<'a, T>[src]
ⓘImportant traits for LocalFutureObj<'_, T>
impl<'a> From<Box<dyn Future<Output = ()> + 'a + Send>> for FutureObj<'a, ()>[src]
ⓘImportant traits for FutureObj<'_, T>fn from(boxed: Box<dyn Future<Output = ()> + 'a + Send>) -> FutureObj<'a, ()>[src]
ⓘImportant traits for FutureObj<'_, T>
impl<'a, F> From<Box<F>> for FutureObj<'a, ()> where
F: 'a + Send + Future<Output = ()>, [src]
F: 'a + Send + Future<Output = ()>,
impl<'a> From<Pin<Box<dyn Future<Output = ()> + 'a + Send>>> for FutureObj<'a, ()>[src]
ⓘImportant traits for FutureObj<'_, T>fn from(
boxed: Pin<Box<dyn Future<Output = ()> + 'a + Send>>
) -> FutureObj<'a, ()>[src]
ⓘImportant traits for FutureObj<'_, T>
boxed: Pin<Box<dyn Future<Output = ()> + 'a + Send>>
) -> FutureObj<'a, ()>
impl<'a, F> From<Pin<Box<F>>> for FutureObj<'a, ()> where
F: 'a + Send + Future<Output = ()>, [src]
F: 'a + Send + Future<Output = ()>,
Auto Trait Implementations
impl<'a, T> !Sync for FutureObj<'a, T>
impl<'a, T> !RefUnwindSafe for FutureObj<'a, T>
impl<'a, T> !UnwindSafe for FutureObj<'a, T>
Blanket Implementations
impl<T, U> Into<U> for T where
U: From<T>, [src]
U: From<T>,
impl<T> From<T> for T[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.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>, [src]
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]
impl<T> Borrow<T> for T where
T: ?Sized, [src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized, [src]
T: ?Sized,
ⓘImportant traits for &'_ mut Ffn borrow_mut(&mut self) -> &mut T[src]
ⓘImportant traits for &'_ mut F
impl<T> Any for T where
T: 'static + ?Sized, [src]
T: 'static + ?Sized,
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
fn try_poll(self: Pin<&mut F>, cx: &mut Context) -> Poll<<F as Future>::Output>[src]
impl<T> FutureExt for T where
T: Future + ?Sized, [src]
T: Future + ?Sized,
ⓘImportant traits for Map<Fut, F>fn map<U, F>(self, f: F) -> Map<Self, F> where
F: FnOnce(Self::Output) -> U, [src]
ⓘImportant traits for Map<Fut, F>
F: FnOnce(Self::Output) -> U,
ⓘImportant traits for Then<Fut1, Fut2, F>fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where
F: FnOnce(Self::Output) -> Fut,
Fut: Future, [src]
ⓘImportant traits for Then<Fut1, Fut2, F>
F: FnOnce(Self::Output) -> Fut,
Fut: Future,
ⓘImportant traits for Either<A, B>fn left_future<B>(self) -> Either<Self, B> where
B: Future<Output = Self::Output>, [src]
ⓘImportant traits for Either<A, B>
B: Future<Output = Self::Output>,
ⓘImportant traits for Either<A, B>fn right_future<A>(self) -> Either<A, Self> where
A: Future<Output = Self::Output>, [src]
ⓘImportant traits for Either<A, B>
A: Future<Output = Self::Output>,
fn into_stream(self) -> IntoStream<Self>[src]
ⓘImportant traits for Flatten<Fut>fn flatten(self) -> Flatten<Self> where
Self::Output: Future, [src]
ⓘImportant traits for Flatten<Fut>
Self::Output: Future,
fn flatten_stream(self) -> FlattenStream<Self> where
Self::Output: Stream, [src]
Self::Output: Stream,
ⓘImportant traits for Fuse<Fut>fn fuse(self) -> Fuse<Self>[src]
ⓘImportant traits for Fuse<Fut>
ⓘImportant traits for Inspect<Fut, F>fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnOnce(&Self::Output), [src]
ⓘImportant traits for Inspect<Fut, F>
F: FnOnce(&Self::Output),
ⓘImportant traits for CatchUnwind<Fut>fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe, [src]
ⓘImportant traits for CatchUnwind<Fut>
Self: UnwindSafe,
ⓘImportant traits for Shared<Fut>fn shared(self) -> Shared<Self> where
Self::Output: Clone, [src]
ⓘImportant traits for Shared<Fut>
Self::Output: Clone,
fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)[src]
ⓘImportant traits for Pin<P>fn boxed<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + 'a + Send>> where
Self: Send + 'a, [src]
ⓘImportant traits for Pin<P>
Self: Send + 'a,
ⓘImportant traits for Pin<P>fn boxed_local<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + 'a>> where
Self: 'a, [src]
ⓘImportant traits for Pin<P>
Self: 'a,
ⓘImportant traits for UnitError<Fut>fn unit_error(self) -> UnitError<Self>[src]
ⓘImportant traits for UnitError<Fut>
ⓘImportant traits for NeverError<Fut>fn never_error(self) -> NeverError<Self>[src]
ⓘImportant traits for NeverError<Fut>
fn poll_unpin(&mut self, cx: &mut Context) -> Poll<Self::Output> where
Self: Unpin, [src]
Self: Unpin,
fn now_or_never(self) -> Option<Self::Output>[src]
impl<Fut> TryFutureExt for Fut where
Fut: TryFuture + ?Sized, [src]
Fut: TryFuture + ?Sized,
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,
ⓘImportant traits for MapOk<Fut, F>fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where
F: FnOnce(Self::Ok) -> T, [src]
ⓘImportant traits for MapOk<Fut, F>
F: FnOnce(Self::Ok) -> T,
ⓘImportant traits for MapErr<Fut, F>fn map_err<E, F>(self, f: F) -> MapErr<Self, F> where
F: FnOnce(Self::Error) -> E, [src]
ⓘImportant traits for MapErr<Fut, F>
F: FnOnce(Self::Error) -> E,
ⓘImportant traits for ErrInto<Fut, E>fn err_into<E>(self) -> ErrInto<Self, E> where
Self::Error: Into<E>, [src]
ⓘImportant traits for ErrInto<Fut, E>
Self::Error: Into<E>,
ⓘImportant traits for AndThen<Fut1, Fut2, F>fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where
F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>, [src]
ⓘImportant traits for AndThen<Fut1, Fut2, F>
F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,
ⓘImportant traits for OrElse<Fut1, Fut2, F>fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> where
F: FnOnce(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>, [src]
ⓘImportant traits for OrElse<Fut1, Fut2, F>
F: FnOnce(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,
ⓘImportant traits for InspectOk<Fut, F>fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> where
F: FnOnce(&Self::Ok), [src]
ⓘImportant traits for InspectOk<Fut, F>
F: FnOnce(&Self::Ok),
ⓘImportant traits for InspectErr<Fut, F>fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where
F: FnOnce(&Self::Error), [src]
ⓘImportant traits for InspectErr<Fut, F>
F: FnOnce(&Self::Error),
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,
ⓘImportant traits for UnwrapOrElse<Fut, F>fn unwrap_or_else<F>(self, f: F) -> UnwrapOrElse<Self, F> where
F: FnOnce(Self::Error) -> Self::Ok, [src]
ⓘImportant traits for UnwrapOrElse<Fut, F>
F: FnOnce(Self::Error) -> Self::Ok,
ⓘImportant traits for Compat<R>fn compat(self) -> Compat<Self> where
Self: Unpin, [src]
ⓘImportant traits for Compat<R>
Self: Unpin,
ⓘImportant traits for IntoFuture<Fut>fn into_future(self) -> IntoFuture<Self>[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]
&mut self,
cx: &mut Context
) -> Poll<Result<Self::Ok, Self::Error>> where
Self: Unpin,