Struct futures_util::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, 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<T, U> TryInto<U> for T where
U: TryFrom<T>, [src]
U: TryFrom<T>,