pub struct AndThenFuture<TFut, TMap, TMapOut> { /* private fields */ }
Expand description
Custom Future
to avoid boxing.
Applies a function to the result of the inner future.
Trait Implementations
sourceimpl<TFut, TMap, TMapOut> Debug for AndThenFuture<TFut, TMap, TMapOut> where
TFut: Debug,
TMap: Debug,
TMapOut: Debug,
impl<TFut, TMap, TMapOut> Debug for AndThenFuture<TFut, TMap, TMapOut> where
TFut: Debug,
TMap: Debug,
TMapOut: Debug,
sourceimpl<TFut, TMap, TMapOut> Future for AndThenFuture<TFut, TMap, TMapOut> where
TFut: TryFuture,
TMap: FnOnce(<TFut as TryFuture>::Ok, ConnectedPoint) -> TMapOut,
TMapOut: TryFuture,
impl<TFut, TMap, TMapOut> Future for AndThenFuture<TFut, TMap, TMapOut> where
TFut: TryFuture,
TMap: FnOnce(<TFut as TryFuture>::Ok, ConnectedPoint) -> TMapOut,
TMapOut: TryFuture,
type Output = Result<<TMapOut as TryFuture>::Ok, EitherError<<TFut as TryFuture>::Error, <TMapOut as TryFuture>::Error>>
type Output = Result<<TMapOut as TryFuture>::Ok, EitherError<<TFut as TryFuture>::Error, <TMapOut as TryFuture>::Error>>
The type of value produced on completion.
sourcepub fn poll(
self: Pin<&mut AndThenFuture<TFut, TMap, TMapOut>>,
cx: &mut Context<'_>
) -> Poll<<AndThenFuture<TFut, TMap, TMapOut> as Future>::Output>
pub fn poll(
self: Pin<&mut AndThenFuture<TFut, TMap, TMapOut>>,
cx: &mut Context<'_>
) -> Poll<<AndThenFuture<TFut, TMap, TMapOut> as Future>::Output>
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<TFut, TMap, TMapOut> Unpin for AndThenFuture<TFut, TMap, TMapOut>
Auto Trait Implementations
impl<TFut, TMap, TMapOut> RefUnwindSafe for AndThenFuture<TFut, TMap, TMapOut> where
TFut: RefUnwindSafe,
TMap: RefUnwindSafe,
TMapOut: RefUnwindSafe,
impl<TFut, TMap, TMapOut> Send for AndThenFuture<TFut, TMap, TMapOut> where
TFut: Send,
TMap: Send,
TMapOut: Send,
impl<TFut, TMap, TMapOut> Sync for AndThenFuture<TFut, TMap, TMapOut> where
TFut: Sync,
TMap: Sync,
TMapOut: Sync,
impl<TFut, TMap, TMapOut> UnwindSafe for AndThenFuture<TFut, TMap, TMapOut> where
TFut: UnwindSafe,
TMap: UnwindSafe,
TMapOut: UnwindSafe,
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> FutureExt for T where
T: Future + ?Sized,
impl<T> FutureExt for T where
T: Future + ?Sized,
sourcefn map<U, F>(self, f: F) -> Map<Self, F> where
F: FnOnce(Self::Output) -> U,
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
sourcefn map_into<U>(self) -> MapInto<Self, U> where
Self::Output: Into<U>,
fn map_into<U>(self) -> MapInto<Self, U> where
Self::Output: Into<U>,
Map this future’s output to a different type, returning a new future of the resulting type. Read more
sourcefn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where
F: FnOnce(Self::Output) -> Fut,
Fut: Future,
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
sourcefn left_future<B>(self) -> Either<Self, B> where
B: Future<Output = Self::Output>,
fn left_future<B>(self) -> Either<Self, B> where
B: Future<Output = Self::Output>,
Wrap this future in an Either
future, making it the left-hand variant
of that Either
. Read more
sourcefn right_future<A>(self) -> Either<A, Self> where
A: Future<Output = Self::Output>,
fn right_future<A>(self) -> Either<A, Self> where
A: Future<Output = Self::Output>,
Wrap this future in an Either
future, making it the right-hand variant
of that Either
. Read more
sourcefn into_stream(self) -> IntoStream<Self>
fn into_stream(self) -> IntoStream<Self>
Convert this future into a single element stream. Read more
sourcefn flatten(self) -> Flatten<Self> where
Self::Output: Future,
fn flatten(self) -> Flatten<Self> where
Self::Output: Future,
Flatten the execution of this future when the output of this future is itself another future. Read more
sourcefn flatten_stream(self) -> FlattenStream<Self> where
Self::Output: Stream,
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
sourcefn fuse(self) -> Fuse<Self>
fn fuse(self) -> Fuse<Self>
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
sourcefn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnOnce(&Self::Output),
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
sourcefn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe,
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
sourcefn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)
fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)
Turn this future into a future that yields ()
on completion and sends
its output to another future on a separate task. Read more
sourcefn boxed<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a, Global>> where
Self: 'a + Send,
fn boxed<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a, Global>> where
Self: 'a + Send,
Wrap the future in a Box, pinning it. Read more
sourcefn boxed_local<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>> where
Self: 'a,
fn boxed_local<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>> where
Self: 'a,
Wrap the future in a Box, pinning it. Read more
sourcefn unit_error(self) -> UnitError<Self>
fn unit_error(self) -> UnitError<Self>
Turns a Future<Output = T>
into a
TryFuture<Ok = T, Error = ()
>. Read more
sourcefn never_error(self) -> NeverError<Self>
fn never_error(self) -> NeverError<Self>
Turns a Future<Output = T>
into a
TryFuture<Ok = T, Error = Never
>. Read more
sourcefn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output> where
Self: Unpin,
fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output> where
Self: Unpin,
A convenience for calling Future::poll
on Unpin
future types.
sourcefn now_or_never(self) -> Option<Self::Output>
fn now_or_never(self) -> Option<Self::Output>
Evaluates and consumes the future, returning the resulting output if
the future is ready after the first call to Future::poll
. Read more
sourceimpl<F> FutureExt for F where
F: Future + ?Sized,
impl<F> FutureExt for F where
F: Future + ?Sized,
sourcefn poll(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output> where
Self: Unpin,
fn poll(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output> where
Self: Unpin,
A convenience for calling Future::poll()
on !
Unpin
types.
sourcefn or<F>(self, other: F) -> Or<Self, F> where
F: Future<Output = Self::Output>,
fn or<F>(self, other: F) -> Or<Self, F> where
F: Future<Output = Self::Output>,
Returns the result of self
or other
future, preferring self
if both are ready. Read more
sourcefn race<F>(self, other: F) -> Race<Self, F> where
F: Future<Output = Self::Output>,
fn race<F>(self, other: F) -> Race<Self, F> where
F: Future<Output = Self::Output>,
Returns the result of self
or other
future, with no preference if both are ready. Read more
sourcefn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe,
fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe,
Catches panics while polling the future. Read more
sourceimpl<T> FutureExt for T where
T: Future + ?Sized,
impl<T> FutureExt for T where
T: Future + ?Sized,
sourcefn delay(self, dur: Duration) -> DelayFuture<Self>
fn delay(self, dur: Duration) -> DelayFuture<Self>
Returns a Future that delays execution for a specified time. Read more
sourcefn flatten(self) -> FlattenFuture<Self, <Self::Output as IntoFuture>::Future> where
Self::Output: IntoFuture,
fn flatten(self) -> FlattenFuture<Self, <Self::Output as IntoFuture>::Future> where
Self::Output: IntoFuture,
Flatten out the execution of this future when the result itself can be converted into another future. Read more
sourcefn race<F>(self, other: F) -> Race<Self, F> where
Self: Future,
F: Future<Output = Self::Output>,
fn race<F>(self, other: F) -> Race<Self, F> where
Self: Future,
F: Future<Output = Self::Output>,
Waits for one of two similarly-typed futures to complete. Read more
sourcefn try_race<F, T, E>(self, other: F) -> TryRace<Self, F> where
Self: Future<Output = Result<T, E>>,
F: Future<Output = Self::Output>,
fn try_race<F, T, E>(self, other: F) -> TryRace<Self, F> where
Self: Future<Output = Result<T, E>>,
F: Future<Output = Self::Output>,
Waits for one of two similarly-typed fallible futures to complete. Read more
sourcefn join<F>(self, other: F) -> Join<Self, F> where
Self: Future,
F: Future,
fn join<F>(self, other: F) -> Join<Self, F> where
Self: Future,
F: Future,
Waits for two similarly-typed futures to complete. Read more
sourceimpl<F> IntoFuture for F where
F: Future,
impl<F> IntoFuture for F where
F: Future,
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?
sourcepub fn into_future(self) -> <F as IntoFuture>::Future
pub fn into_future(self) -> <F as IntoFuture>::Future
into_future
)Creates a future from a value.
sourceimpl<T> IntoFuture for T where
T: Future,
impl<T> IntoFuture for T where
T: Future,
type Future = T
type Future = T
Which kind of future are we turning this into?
sourcepub fn into_future(self) -> <T as IntoFuture>::Future
pub fn into_future(self) -> <T as IntoFuture>::Future
Create a future from a value
sourceimpl<Fut> TryFutureExt for Fut where
Fut: TryFuture + ?Sized,
impl<Fut> TryFutureExt for Fut where
Fut: TryFuture + ?Sized,
sourcefn flatten_sink<Item>(self) -> FlattenSink<Self, Self::Ok> where
Self::Ok: Sink<Item>,
<Self::Ok as Sink<Item>>::Error == Self::Error,
fn flatten_sink<Item>(self) -> FlattenSink<Self, Self::Ok> where
Self::Ok: Sink<Item>,
<Self::Ok as Sink<Item>>::Error == Self::Error,
sourcefn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where
F: FnOnce(Self::Ok) -> T,
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
sourcefn map_ok_or_else<T, E, F>(self, e: E, f: F) -> MapOkOrElse<Self, F, E> where
F: FnOnce(Self::Ok) -> T,
E: FnOnce(Self::Error) -> T,
fn map_ok_or_else<T, E, F>(self, e: E, f: F) -> MapOkOrElse<Self, F, E> where
F: FnOnce(Self::Ok) -> T,
E: FnOnce(Self::Error) -> T,
Maps this future’s success value to a different value, and permits for error handling resulting in the same type. Read more
sourcefn map_err<E, F>(self, f: F) -> MapErr<Self, F> where
F: FnOnce(Self::Error) -> E,
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
sourcefn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where
F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,
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
sourcefn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> where
F: FnOnce(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,
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
sourcefn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> where
F: FnOnce(&Self::Ok),
fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> where
F: FnOnce(&Self::Ok),
Do something with the success value of a future before passing it on. Read more
sourcefn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where
F: FnOnce(&Self::Error),
fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where
F: FnOnce(&Self::Error),
Do something with the error value of a future before passing it on. Read more
sourcefn try_flatten(self) -> TryFlatten<Self, Self::Ok> where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,
fn try_flatten(self) -> TryFlatten<Self, Self::Ok> where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,
Flatten the execution of this future when the successful result of this future is another future. Read more
sourcefn try_flatten_stream(self) -> TryFlattenStream<Self> where
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error == Self::Error,
fn try_flatten_stream(self) -> TryFlattenStream<Self> where
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error == Self::Error,
Flatten the execution of this future when the successful result of this future is a stream. Read more