Join4

headless_lms_chatbot::prelude::futures::prelude::future

Struct Join4 

pub struct Join4<Fut1, Fut2, Fut3, Fut4>
where
    Fut1: Future,
    Fut2: Future,
    Fut3: Future,
    Fut4: Future,
{
    Fut1: MaybeDone<Fut1>,
    Fut2: MaybeDone<Fut2>,
    Fut3: MaybeDone<Fut3>,
    Fut4: MaybeDone<Fut4>,
}
Expand description

Future for the join4 function.

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§Fut1: MaybeDone<Fut1>§Fut2: MaybeDone<Fut2>§Fut3: MaybeDone<Fut3>§Fut4: MaybeDone<Fut4>

Trait Implementations§

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impl<Fut1, Fut2, Fut3, Fut4> Debug for Join4<Fut1, Fut2, Fut3, Fut4>
where Fut1: Future + Debug, <Fut1 as Future>::Output: Debug, Fut2: Future + Debug, <Fut2 as Future>::Output: Debug, Fut3: Future + Debug, <Fut3 as Future>::Output: Debug, Fut4: Future + Debug, <Fut4 as Future>::Output: Debug,

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl<Fut1, Fut2, Fut3, Fut4> FusedFuture for Join4<Fut1, Fut2, Fut3, Fut4>
where Fut1: FusedFuture, Fut2: FusedFuture, Fut3: FusedFuture, Fut4: FusedFuture,

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fn is_terminated(&self) -> bool

Returns true if the underlying future should no longer be polled.
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impl<Fut1, Fut2, Fut3, Fut4> Future for Join4<Fut1, Fut2, Fut3, Fut4>
where Fut1: Future, Fut2: Future, Fut3: Future, Fut4: Future,

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type Output = (<Fut1 as Future>::Output, <Fut2 as Future>::Output, <Fut3 as Future>::Output, <Fut4 as Future>::Output)

The type of value produced on completion.
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fn poll( self: Pin<&mut Join4<Fut1, Fut2, Fut3, Fut4>>, cx: &mut Context<'_>, ) -> Poll<<Join4<Fut1, Fut2, Fut3, Fut4> as Future>::Output>

Attempts to resolve the future to a final value, registering the current task for wakeup if the value is not yet available. Read more
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impl<'__pin, Fut1, Fut2, Fut3, Fut4> Unpin for Join4<Fut1, Fut2, Fut3, Fut4>
where Fut1: Future, Fut2: Future, Fut3: Future, Fut4: Future, <PinnedFieldsOfHelperStruct<__Origin<'__pin, Fut1, Fut2, Fut3, Fut4>> as PinnedFieldsOfHelperTrait>::Actual: Unpin,

Auto Trait Implementations§

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impl<Fut1, Fut2, Fut3, Fut4> Freeze for Join4<Fut1, Fut2, Fut3, Fut4>
where Fut1: Freeze, <Fut1 as Future>::Output: Freeze, Fut2: Freeze, <Fut2 as Future>::Output: Freeze, Fut3: Freeze, <Fut3 as Future>::Output: Freeze, Fut4: Freeze, <Fut4 as Future>::Output: Freeze,

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impl<Fut1, Fut2, Fut3, Fut4> RefUnwindSafe for Join4<Fut1, Fut2, Fut3, Fut4>
where Fut1: RefUnwindSafe, <Fut1 as Future>::Output: RefUnwindSafe, Fut2: RefUnwindSafe, <Fut2 as Future>::Output: RefUnwindSafe, Fut3: RefUnwindSafe, <Fut3 as Future>::Output: RefUnwindSafe, Fut4: RefUnwindSafe, <Fut4 as Future>::Output: RefUnwindSafe,

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impl<Fut1, Fut2, Fut3, Fut4> Send for Join4<Fut1, Fut2, Fut3, Fut4>
where Fut1: Send, <Fut1 as Future>::Output: Send, Fut2: Send, <Fut2 as Future>::Output: Send, Fut3: Send, <Fut3 as Future>::Output: Send, Fut4: Send, <Fut4 as Future>::Output: Send,

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impl<Fut1, Fut2, Fut3, Fut4> Sync for Join4<Fut1, Fut2, Fut3, Fut4>
where Fut1: Sync, <Fut1 as Future>::Output: Sync, Fut2: Sync, <Fut2 as Future>::Output: Sync, Fut3: Sync, <Fut3 as Future>::Output: Sync, Fut4: Sync, <Fut4 as Future>::Output: Sync,

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impl<Fut1, Fut2, Fut3, Fut4> UnwindSafe for Join4<Fut1, Fut2, Fut3, Fut4>
where Fut1: UnwindSafe, <Fut1 as Future>::Output: UnwindSafe, Fut2: UnwindSafe, <Fut2 as Future>::Output: UnwindSafe, Fut3: UnwindSafe, <Fut3 as Future>::Output: UnwindSafe, Fut4: UnwindSafe, <Fut4 as Future>::Output: UnwindSafe,

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<F> FutureExt for F
where F: Future + ?Sized,

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fn poll(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output>
where Self: Unpin,

A convenience for calling Future::poll() on !Unpin types.
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fn or<F>(self, other: F) -> Or<Self, F> ⓘ
where Self: Sized, F: Future<Output = Self::Output>,

Returns the result of self or other future, preferring self if both are ready. Read more
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fn race<F>(self, other: F) -> Race<Self, F> ⓘ
where Self: Sized, F: Future<Output = Self::Output>,

Returns the result of self or other future, with no preference if both are ready. Read more
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fn catch_unwind(self) -> CatchUnwind<Self> ⓘ
where Self: Sized + UnwindSafe,

Catches panics while polling the future. Read more
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fn boxed<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a>>
where Self: Sized + Send + 'a,

Boxes the future and changes its type to dyn Future + Send + 'a. Read more
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fn boxed_local<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + 'a>>
where Self: Sized + 'a,

Boxes the future and changes its type to dyn Future + 'a. Read more
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impl<T> FutureExt for T
where T: Future + ?Sized,

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fn map<U, F>(self, f: F) -> Map<Self, F> ⓘ
where F: FnOnce(Self::Output) -> U, Self: Sized,

Map this future’s output to a different type, returning a new future of the resulting type. Read more
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fn map_into<U>(self) -> MapInto<Self, U> ⓘ
where Self::Output: Into<U>, Self: Sized,

Map this future’s output to a different type, returning a new future of the resulting type. Read more
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fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> ⓘ
where F: FnOnce(Self::Output) -> Fut, Fut: Future, Self: Sized,

Chain on a computation for when a future finished, passing the result of the future to the provided closure f. Read more
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fn left_future<B>(self) -> Either<Self, B> ⓘ
where B: Future<Output = Self::Output>, Self: Sized,

Wrap this future in an Either future, making it the left-hand variant of that Either. Read more
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fn right_future<A>(self) -> Either<A, Self> ⓘ
where A: Future<Output = Self::Output>, Self: Sized,

Wrap this future in an Either future, making it the right-hand variant of that Either. Read more
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fn into_stream(self) -> IntoStream<Self>
where Self: Sized,

Convert this future into a single element stream. Read more
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fn flatten(self) -> Flatten<Self> ⓘ
where Self::Output: Future, Self: Sized,

Flatten the execution of this future when the output of this future is itself another future. Read more
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fn flatten_stream(self) -> FlattenStream<Self>
where Self::Output: Stream, Self: Sized,

Flatten the execution of this future when the successful result of this future is a stream. Read more
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fn fuse(self) -> Fuse<Self> ⓘ
where Self: Sized,

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
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fn inspect<F>(self, f: F) -> Inspect<Self, F> ⓘ
where F: FnOnce(&Self::Output), Self: Sized,

Do something with the output of a future before passing it on. Read more
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fn catch_unwind(self) -> CatchUnwind<Self> ⓘ
where Self: Sized + UnwindSafe,

Catches unwinding panics while polling the future. Read more
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fn shared(self) -> Shared<Self> ⓘ
where Self: Sized, Self::Output: Clone,

Create a cloneable handle to this future where all handles will resolve to the same result. Read more
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fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)
where Self: Sized,

Turn this future into a future that yields () on completion and sends its output to another future on a separate task. Read more
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fn boxed<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a>>
where Self: Sized + Send + 'a,

Wrap the future in a Box, pinning it. Read more
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fn boxed_local<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + 'a>>
where Self: Sized + 'a,

Wrap the future in a Box, pinning it. Read more
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fn unit_error(self) -> UnitError<Self> ⓘ
where Self: Sized,

Turns a Future<Output = T> into a TryFuture<Ok = T, Error = ()>.
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fn never_error(self) -> NeverError<Self> ⓘ
where Self: Sized,

Turns a Future<Output = T> into a TryFuture<Ok = T, Error = Never>.
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fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output>
where Self: Unpin,

A convenience for calling Future::poll on Unpin future types.
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fn now_or_never(self) -> Option<Self::Output>
where Self: Sized,

Evaluates and consumes the future, returning the resulting output if the future is ready after the first call to Future::poll. Read more
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impl<T> FutureExt for T
where T: Future + ?Sized,

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fn timeout(self, timeout: Duration) -> Timeout<Self> ⓘ
where Self: Sized,

A wrapper around tokio::time::timeout, with the advantage that it is easier to write fluent call chains. Read more
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fn timeout_at(self, deadline: Instant) -> Timeout<Self> ⓘ
where Self: Sized,

A wrapper around tokio::time::timeout_at, with the advantage that it is easier to write fluent call chains. Read more
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fn with_cancellation_token( self, cancellation_token: &CancellationToken, ) -> WithCancellationTokenFuture<'_, Self>
where Self: Sized,

Similar to [CancellationToken::run_until_cancelled], but with the advantage that it is easier to write fluent call chains. Read more
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fn with_cancellation_token_owned( self, cancellation_token: CancellationToken, ) -> WithCancellationTokenFutureOwned<Self>
where Self: Sized,

Similar to [CancellationToken::run_until_cancelled_owned], but with the advantage that it is easier to write fluent call chains. Read more
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<F> IntoFuture for F
where F: Future,

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type Output = <F as Future>::Output

The output that the future will produce on completion.
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type IntoFuture = F

Which kind of future are we turning this into?
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fn into_future(self) -> <F as IntoFuture>::IntoFuture

Creates a future from a value. Read more
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fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns [Action::Follow] only if self and other return Action::Follow. Read more
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fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns [Action::Follow] if either self or other returns Action::Follow. Read more
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fn map_response_body<F>(self, f: F) -> MapResponseBody<Self, F>
where Self: Sized,

Apply a transformation to the response body. Read more
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fn decompression(self) -> Decompression<Self>
where Self: Sized,

Decompress response bodies. Read more
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fn trace_for_http(self) -> Trace<Self, SharedClassifier<ServerErrorsAsFailures>>
where Self: Sized,

High level tracing that classifies responses using HTTP status codes. Read more
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fn trace_for_grpc(self) -> Trace<Self, SharedClassifier<GrpcErrorsAsFailures>>
where Self: Sized,

High level tracing that classifies responses using gRPC headers. Read more
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Follow redirect resposes using the Standard policy. Read more
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