Struct futures::future::Select [−][src]
#[must_use = "futures do nothing unless you `.await` or poll them"]pub struct Select<A, B> { /* fields omitted */ }
Expand description
Future for the select()
function.
Trait Implementations
impl<A, B> FusedFuture for Select<A, B> where
B: Future + Unpin,
A: Future + Unpin,
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impl<A, B> FusedFuture for Select<A, B> where
B: Future + Unpin,
A: Future + Unpin,
[src]pub fn is_terminated(&self) -> bool
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pub fn is_terminated(&self) -> bool
[src]Returns true
if the underlying future should no longer be polled.
impl<A, B> Future for Select<A, B> where
B: Future + Unpin,
A: Future + Unpin,
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impl<A, B> Future for Select<A, B> where
B: Future + Unpin,
A: Future + Unpin,
[src]impl<A, B> Unpin for Select<A, B> where
B: Unpin,
A: Unpin,
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B: Unpin,
A: Unpin,
Auto Trait Implementations
impl<A, B> RefUnwindSafe for Select<A, B> where
A: RefUnwindSafe,
B: RefUnwindSafe,
A: RefUnwindSafe,
B: RefUnwindSafe,
impl<A, B> Send for Select<A, B> where
A: Send,
B: Send,
A: Send,
B: Send,
impl<A, B> Sync for Select<A, B> where
A: Sync,
B: Sync,
A: Sync,
B: Sync,
impl<A, B> UnwindSafe for Select<A, B> where
A: UnwindSafe,
B: UnwindSafe,
A: UnwindSafe,
B: UnwindSafe,
Blanket Implementations
impl<T> BorrowMut<T> for T where
T: ?Sized,
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impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]pub fn borrow_mut(&mut self) -> &mut T
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pub fn borrow_mut(&mut self) -> &mut T
[src]Mutably borrows from an owned value. Read more
impl<T> FutureExt for T where
T: Future + ?Sized,
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impl<T> FutureExt for T where
T: Future + ?Sized,
[src]fn map<U, F>(self, f: F) -> Map<Self, F>ⓘ where
F: FnOnce(Self::Output) -> U,
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fn map<U, F>(self, f: F) -> Map<Self, F>ⓘ where
F: FnOnce(Self::Output) -> U,
[src]Map this future’s output to a different type, returning a new future of the resulting type. Read more
fn map_into<U>(self) -> MapInto<Self, U>ⓘ where
Self::Output: Into<U>,
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fn map_into<U>(self) -> MapInto<Self, U>ⓘ where
Self::Output: Into<U>,
[src]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,
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fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F>ⓘ where
F: FnOnce(Self::Output) -> Fut,
Fut: Future,
[src]Chain on a computation for when a future finished, passing the result of
the future to the provided closure f
. Read more
fn left_future<B>(self) -> Either<Self, B>ⓘ where
B: Future<Output = Self::Output>,
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fn left_future<B>(self) -> Either<Self, B>ⓘ where
B: Future<Output = Self::Output>,
[src]Wrap this future in an Either
future, making it the left-hand variant
of that Either
. Read more
fn right_future<A>(self) -> Either<A, Self>ⓘ where
A: Future<Output = Self::Output>,
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fn right_future<A>(self) -> Either<A, Self>ⓘ where
A: Future<Output = Self::Output>,
[src]Wrap this future in an Either
future, making it the right-hand variant
of that Either
. Read more
fn into_stream(self) -> IntoStream<Self>
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fn into_stream(self) -> IntoStream<Self>
[src]Convert this future into a single element stream. Read more
fn flatten(self) -> Flatten<Self>ⓘ where
Self::Output: Future,
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fn flatten(self) -> Flatten<Self>ⓘ where
Self::Output: Future,
[src]Flatten the execution of this future when the output of this future is itself another future. Read more
fn flatten_stream(self) -> FlattenStream<Self> where
Self::Output: Stream,
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fn flatten_stream(self) -> FlattenStream<Self> where
Self::Output: Stream,
[src]Flatten the execution of this future when the successful result of this future is a stream. Read more
fn fuse(self) -> Fuse<Self>ⓘ
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fn fuse(self) -> Fuse<Self>ⓘ
[src]Fuse a future such that poll
will never again be called once it has
completed. This method can be used to turn any Future
into a
FusedFuture
. Read more
fn inspect<F>(self, f: F) -> Inspect<Self, F>ⓘ where
F: FnOnce(&Self::Output),
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fn inspect<F>(self, f: F) -> Inspect<Self, F>ⓘ where
F: FnOnce(&Self::Output),
[src]Do something with the output of a future before passing it on. Read more
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,
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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]Catches unwinding panics while polling the future. Read more
fn shared(self) -> Shared<Self>ⓘ where
Self::Output: Clone,
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fn shared(self) -> Shared<Self>ⓘ where
Self::Output: Clone,
[src]Create a cloneable handle to this future where all handles will resolve to the same result. Read more
fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)
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fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)
[src]Turn this future into a future that yields ()
on completion and sends
its output to another future on a separate task. Read more
fn boxed<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a + Send, Global>>ⓘ where
Self: Send + 'a,
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fn boxed<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a + Send, Global>>ⓘ where
Self: Send + 'a,
[src]Wrap the future in a Box, pinning it. Read more
fn boxed_local<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>>ⓘ where
Self: 'a,
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fn boxed_local<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>>ⓘ where
Self: 'a,
[src]Wrap the future in a Box, pinning it. Read more
fn unit_error(self) -> UnitError<Self>ⓘ
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fn unit_error(self) -> UnitError<Self>ⓘ
[src]Turns a Future<Output = T>
into a
TryFuture<Ok = T, Error = ()
>. Read more
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;
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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]Turns a Future<Output = T>
into a
TryFuture<Ok = T, Error = Never
>. Read more
fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output> where
Self: Unpin,
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fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output> where
Self: Unpin,
[src]A convenience for calling Future::poll
on Unpin
future types.
fn now_or_never(self) -> Option<Self::Output>
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fn now_or_never(self) -> Option<Self::Output>
[src]Evaluates and consumes the future, returning the resulting output if
the future is ready after the first call to Future::poll
. Read more
impl<F> IntoFuture for F where
F: Future,
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impl<F> IntoFuture for F where
F: Future,
[src]type Output = <F as Future>::Output
type Output = <F as Future>::Output
into_future
)The output that the future will produce on completion.
type Future = F
type Future = F
into_future
)Which kind of future are we turning this into?
pub fn into_future(self) -> <F as IntoFuture>::Future
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pub fn into_future(self) -> <F as IntoFuture>::Future
[src]into_future
)Creates a future from a value.