[−][src]Struct futures::future::Fuse
#[must_use = "futures do nothing unless polled"]pub struct Fuse<Fut> where
Fut: Future, { /* fields omitted */ }
A future which "fuses" a future once it's been resolved.
Normally futures can behave unpredictable once they're used after a future
has been resolved, but Fuse is always defined to return Async::Pending
from poll after it has resolved successfully or returned an error.
This is created by the Future::fuse method.
Trait Implementations
impl<Fut> Future for Fuse<Fut> where
Fut: Future, [src]
impl<Fut> Future for Fuse<Fut> where
Fut: Future, type Output = <Fut as Future>::Output
🔬 This is a nightly-only experimental API. (futures_api)
futures in libcore are unstable
The result of the Future.
fn poll(
self: PinMut<Fuse<Fut>>,
cx: &mut Context
) -> Poll<<Fut as Future>::Output>[src]
fn poll(
self: PinMut<Fuse<Fut>>,
cx: &mut Context
) -> Poll<<Fut as Future>::Output>🔬 This is a nightly-only experimental API. (futures_api)
futures in libcore are unstable
Attempt to resolve the future to a final value, registering the current task for wakeup if the value is not yet available. Read more
impl<Fut> Debug for Fuse<Fut> where
Fut: Debug + Future, [src]
impl<Fut> Debug for Fuse<Fut> where
Fut: Debug + Future, Auto Trait Implementations
Blanket Implementations
impl<T> From for T[src]
impl<T> From for Timpl<T, U> TryFrom for T where
T: From<U>, [src]
impl<T, U> TryFrom for T where
T: From<U>, type Error = !
try_from)The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>try_from)Performs the conversion.
impl<T, U> TryInto for T where
U: TryFrom<T>, [src]
impl<T, U> TryInto for T where
U: TryFrom<T>, type Error = <U as TryFrom<T>>::Error
try_from)The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>try_from)Performs the conversion.
impl<T, U> Into for T where
U: From<T>, [src]
impl<T, U> Into for T where
U: From<T>, impl<T> Borrow for T where
T: ?Sized, [src]
impl<T> Borrow for T where
T: ?Sized, ⓘImportant traits for &'a mut Ifn borrow(&self) -> &T[src]
fn borrow(&self) -> &TImmutably borrows from an owned value. Read more
impl<T> BorrowMut for T where
T: ?Sized, [src]
impl<T> BorrowMut for T where
T: ?Sized, ⓘImportant traits for &'a mut Ifn borrow_mut(&mut self) -> &mut T[src]
fn borrow_mut(&mut self) -> &mut TMutably borrows from an owned value. Read more
impl<T> Any for T where
T: 'static + ?Sized, [src]
impl<T> Any for T where
T: 'static + ?Sized, fn get_type_id(&self) -> TypeId[src]
fn get_type_id(&self) -> TypeId🔬 This is a nightly-only experimental API. (get_type_id)
this method will likely be replaced by an associated static
Gets the TypeId of self. Read more
impl<T> FutureExt for T where
T: Future + ?Sized, [src]
impl<T> FutureExt for T where
T: Future + ?Sized, fn map<U, F>(self, f: F) -> Map<Self, F> where
F: FnOnce(Self::Output) -> U, [src]
fn map<U, F>(self, f: F) -> Map<Self, F> where
F: FnOnce(Self::Output) -> U, Map this future's output to a different type, returning a new future of the resulting type. Read more
fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where
F: FnOnce(Self::Output) -> Fut,
Fut: Future, [src]
fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where
F: FnOnce(Self::Output) -> Fut,
Fut: Future, Chain on a computation for when a future finished, passing the result of the future to the provided closure f. Read more
fn join<Fut2>(self, other: Fut2) -> Join<Self, Fut2> where
Fut2: Future, [src]
fn join<Fut2>(self, other: Fut2) -> Join<Self, Fut2> where
Fut2: Future, Joins the result of two futures, waiting for them both to complete. Read more
fn join3<Fut2, Fut3>(
self,
future2: Fut2,
future3: Fut3
) -> Join3<Self, Fut2, Fut3> where
Fut2: Future,
Fut3: Future, [src]
fn join3<Fut2, Fut3>(
self,
future2: Fut2,
future3: Fut3
) -> Join3<Self, Fut2, Fut3> where
Fut2: Future,
Fut3: Future, Same as join, but with more futures. Read more
fn join4<Fut2, Fut3, Fut4>(
self,
future2: Fut2,
future3: Fut3,
future4: Fut4
) -> Join4<Self, Fut2, Fut3, Fut4> where
Fut2: Future,
Fut3: Future + Future,
Fut4: Future, [src]
fn join4<Fut2, Fut3, Fut4>(
self,
future2: Fut2,
future3: Fut3,
future4: Fut4
) -> Join4<Self, Fut2, Fut3, Fut4> where
Fut2: Future,
Fut3: Future + Future,
Fut4: Future, Same as join, but with more futures. Read more
fn join5<Fut2, Fut3, Fut4, Fut5>(
self,
future2: Fut2,
future3: Fut3,
future4: Fut4,
future5: Fut5
) -> Join5<Self, Fut2, Fut3, Fut4, Fut5> where
Fut2: Future,
Fut3: Future + Future,
Fut4: Future,
Fut5: Future, [src]
fn join5<Fut2, Fut3, Fut4, Fut5>(
self,
future2: Fut2,
future3: Fut3,
future4: Fut4,
future5: Fut5
) -> Join5<Self, Fut2, Fut3, Fut4, Fut5> where
Fut2: Future,
Fut3: Future + Future,
Fut4: Future,
Fut5: Future, Same as join, but with more futures. Read more
fn into_stream(self) -> IntoStream<Self>[src]
fn into_stream(self) -> IntoStream<Self>Convert this future into a single element stream. Read more
fn flatten(self) -> Flatten<Self> where
Self::Output: Future, [src]
fn flatten(self) -> Flatten<Self> where
Self::Output: Future, Flatten the execution of this future when the successful result of this future is itself another future. Read more
fn flatten_stream(self) -> FlattenStream<Self> where
Self::Output: Stream, [src]
fn flatten_stream(self) -> FlattenStream<Self> where
Self::Output: Stream, Flatten the execution of this future when the successful result of this future is a stream. Read more
fn fuse(self) -> Fuse<Self>[src]
fn fuse(self) -> Fuse<Self>Fuse a future such that poll will never again be called once it has completed. Read more
fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnOnce(&Self::Output), [src]
fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnOnce(&Self::Output), Do something with the output of a future before passing it on. Read more
fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe, [src]
fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe, Catches unwinding panics while polling the future. Read more
Create a cloneable handle to this future where all handles will resolve to the same result. Read more
fn boxed(self) -> PinBox<Self>[src]
fn boxed(self) -> PinBox<Self>Wrap the future in a Box, pinning it.
fn unit_error(self) -> UnitError<Self>[src]
fn unit_error(self) -> UnitError<Self>Turns a Future into a TryFuture with Error = ().
fn with_spawner<Sp>(self, spawner: Sp) -> WithSpawner<Self, Sp> where
Sp: Spawn, [src]
fn with_spawner<Sp>(self, spawner: Sp) -> WithSpawner<Self, Sp> where
Sp: Spawn, Assigns the provided Spawn to be used when spawning tasks from within the future. Read more
fn poll_unpin(&mut self, cx: &mut Context) -> Poll<Self::Output> where
Self: Unpin, [src]
fn poll_unpin(&mut self, cx: &mut Context) -> Poll<Self::Output> where
Self: Unpin, A convenience for calling Future::poll on Unpin future types.
impl<F, T, E> TryFuture for F where
F: Future<Output = Result<T, E>>, [src]
impl<F, T, E> TryFuture for F where
F: Future<Output = Result<T, E>>, 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: PinMut<F>, cx: &mut Context) -> Poll<<F as Future>::Output>[src]
fn try_poll(self: PinMut<F>, cx: &mut Context) -> Poll<<F as Future>::Output>Poll this TryFuture as if it were a Future. Read more
impl<Fut> TryFutureExt for Fut where
Fut: TryFuture, [src]
impl<Fut> TryFutureExt for Fut where
Fut: TryFuture, fn flatten_sink(self) -> FlattenSink<Self, Self::Ok> where
Self::Ok: Sink,
<Self::Ok as Sink>::SinkError == Self::Error, [src]
fn flatten_sink(self) -> FlattenSink<Self, Self::Ok> where
Self::Ok: Sink,
<Self::Ok as Sink>::SinkError == Self::Error, Flattens the execution of this future when the successful result of this future is a [Sink]. Read more
fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where
F: FnOnce(Self::Ok) -> T, [src]
fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where
F: FnOnce(Self::Ok) -> T, Maps this future's success value to a different value. Read more
fn map_err<E, F>(self, f: F) -> MapErr<Self, F> where
F: FnOnce(Self::Error) -> E, [src]
fn map_err<E, F>(self, f: F) -> MapErr<Self, F> where
F: FnOnce(Self::Error) -> E, Maps this future's error value to a different value. Read more
fn err_into<E>(self) -> ErrInto<Self, E> where
Self::Error: Into<E>, [src]
fn err_into<E>(self) -> ErrInto<Self, E> where
Self::Error: Into<E>, Maps this future's Error to a new error type using the Into trait. Read more
fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where
F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>, [src]
fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where
F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>, Executes another future after this one resolves successfully. The success value is passed to a closure to create this subsequent future. Read more
fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> where
F: FnOnce(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>, [src]
fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> where
F: FnOnce(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>, Executes another future if this one resolves to an error. The error value is passed to a closure to create this subsequent future. Read more
fn unwrap_or_else<F>(self, f: F) -> UnwrapOrElse<Self, F> where
F: FnOnce(Self::Error) -> Self::Ok, [src]
fn unwrap_or_else<F>(self, f: F) -> UnwrapOrElse<Self, F> where
F: FnOnce(Self::Error) -> Self::Ok, Unwraps this future's ouput, producing a future with this future's Ok type as its Output type. Read more
fn into_future(self) -> IntoFuture<Self>[src]
fn into_future(self) -> IntoFuture<Self>Wraps a [TryFuture] into a type that implements Future. Read more
fn try_join<Fut2>(self, other: Fut2) -> TryJoin<Self, Fut2> where
Fut2: TryFuture<Error = Self::Error>, [src]
fn try_join<Fut2>(self, other: Fut2) -> TryJoin<Self, Fut2> where
Fut2: TryFuture<Error = Self::Error>, Joins the result of two futures, waiting for them both to complete or for one to produce an error. Read more
fn try_join3<Fut2, Fut3>(
self,
future2: Fut2,
future3: Fut3
) -> TryJoin3<Self, Fut2, Fut3> where
Fut2: TryFuture<Error = Self::Error>,
Fut3: TryFuture<Error = Self::Error>, [src]
fn try_join3<Fut2, Fut3>(
self,
future2: Fut2,
future3: Fut3
) -> TryJoin3<Self, Fut2, Fut3> where
Fut2: TryFuture<Error = Self::Error>,
Fut3: TryFuture<Error = Self::Error>, Same as try_join, but with more futures. Read more
fn try_join4<Fut2, Fut3, Fut4>(
self,
future2: Fut2,
future3: Fut3,
future4: Fut4
) -> TryJoin4<Self, Fut2, Fut3, Fut4> where
Fut2: TryFuture<Error = Self::Error>,
Fut3: TryFuture<Error = Self::Error>,
Fut4: TryFuture<Error = Self::Error>, [src]
fn try_join4<Fut2, Fut3, Fut4>(
self,
future2: Fut2,
future3: Fut3,
future4: Fut4
) -> TryJoin4<Self, Fut2, Fut3, Fut4> where
Fut2: TryFuture<Error = Self::Error>,
Fut3: TryFuture<Error = Self::Error>,
Fut4: TryFuture<Error = Self::Error>, Same as try_join, but with more futures. Read more
fn try_join5<Fut2, Fut3, Fut4, Fut5>(
self,
future2: Fut2,
future3: Fut3,
future4: Fut4,
future5: Fut5
) -> TryJoin5<Self, Fut2, Fut3, Fut4, Fut5> where
Fut2: TryFuture<Error = Self::Error>,
Fut3: TryFuture<Error = Self::Error>,
Fut4: TryFuture<Error = Self::Error>,
Fut5: TryFuture<Error = Self::Error>, [src]
fn try_join5<Fut2, Fut3, Fut4, Fut5>(
self,
future2: Fut2,
future3: Fut3,
future4: Fut4,
future5: Fut5
) -> TryJoin5<Self, Fut2, Fut3, Fut4, Fut5> where
Fut2: TryFuture<Error = Self::Error>,
Fut3: TryFuture<Error = Self::Error>,
Fut4: TryFuture<Error = Self::Error>,
Fut5: TryFuture<Error = Self::Error>, Same as try_join, but with more futures. Read more