Struct futures::prelude::future::Join4

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pub struct Join4<Fut1, Fut2, Fut3, Fut4>where
    Fut1: Future,
    Fut2: Future,
    Fut3: Future,
    Fut4: Future,{ /* private fields */ }

Expand description

Future for the join4 function.

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>

Attempt 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,
 Origin<'__pin, Fut1, Fut2, Fut3, Fut4>: Unpin,

Auto Trait Implementations§

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

Blanket Implementations§

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impl<T> Any for Twhere
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 Twhere
T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source§

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<T> FutureExt for Twhere
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(self) -> MapInto<Self, U> ⓘwhere
Self::Output: Into,
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(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, Global>>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, Global>>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, U> Into for Twhere
U: From<T>,

const: unstable · source§

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<F> IntoFuture for Fwhere
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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impl<T, U> TryFrom for Twhere
U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for Twhere
U: TryFrom<T>,

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type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source§

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct futures::prelude::future::Join4

Trait Implementations§

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,

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

impl<Fut1, Fut2, Fut3, Fut4> FusedFuture for Join4<Fut1, Fut2, Fut3, Fut4>where Fut1: FusedFuture, Fut2: FusedFuture, Fut3: FusedFuture, Fut4: FusedFuture,

fn is_terminated(&self) -> bool

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

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

fn poll( self: Pin<&mut Join4<Fut1, Fut2, Fut3, Fut4>>, cx: &mut Context<'_>) -> Poll<<Join4<Fut1, Fut2, Fut3, Fut4> as Future>::Output>

impl<'__pin, Fut1, Fut2, Fut3, Fut4> Unpin for Join4<Fut1, Fut2, Fut3, Fut4>where Fut1: Future, Fut2: Future, Fut3: Future, Fut4: Future, __Origin<'__pin, Fut1, Fut2, Fut3, Fut4>: Unpin,

Auto Trait Implementations§

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

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

Blanket Implementations§

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

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

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

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> FutureExt for Twhere T: Future + ?Sized,

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

fn map_into<U>(self) -> MapInto<Self, U> ⓘwhere Self::Output: Into<U>, Self: Sized,

fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> ⓘwhere F: FnOnce(Self::Output) -> Fut, Fut: Future, Self: Sized,

fn left_future<B>(self) -> Either<Self, B> ⓘwhere B: Future<Output = Self::Output>, Self: Sized,

fn right_future<A>(self) -> Either<A, Self> ⓘwhere A: Future<Output = Self::Output>, Self: Sized,

fn into_stream(self) -> IntoStream<Self>where Self: Sized,

fn flatten(self) -> Flatten<Self> ⓘwhere Self::Output: Future, Self: Sized,

fn flatten_stream(self) -> FlattenStream<Self>where Self::Output: Stream, Self: Sized,

fn fuse(self) -> Fuse<Self> ⓘwhere Self: Sized,

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

fn catch_unwind(self) -> CatchUnwind<Self> ⓘwhere Self: Sized + UnwindSafe,

fn shared(self) -> Shared<Self> ⓘwhere Self: Sized, Self::Output: Clone,

fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)where Self: Sized,

fn boxed<'a>( self) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a, Global>>where Self: Sized + Send + 'a,

fn boxed_local<'a>( self) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>>where Self: Sized + 'a,

fn unit_error(self) -> UnitError<Self> ⓘwhere Self: Sized,

fn never_error(self) -> NeverError<Self> ⓘwhere Self: Sized,

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

fn now_or_never(self) -> Option<Self::Output>where Self: Sized,

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<F> IntoFuture for Fwhere F: Future,

type Output = <F as Future>::Output

type IntoFuture = F

fn into_future(self) -> <F as IntoFuture>::IntoFuture

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

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,

impl<Fut1, Fut2, Fut3, Fut4> FusedFuture for Join4<Fut1, Fut2, Fut3, Fut4>where
Fut1: FusedFuture,
Fut2: FusedFuture,
Fut3: FusedFuture,
Fut4: FusedFuture,

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

fn poll(
self: Pin<&mut Join4<Fut1, Fut2, Fut3, Fut4>>,
cx: &mut Context<'_>
) -> Poll<<Join4<Fut1, Fut2, Fut3, Fut4> as Future>::Output>

impl<'pin, Fut1, Fut2, Fut3, Fut4> Unpin for Join4<Fut1, Fut2, Fut3, Fut4>where
Fut1: Future,
Fut2: Future,
Fut3: Future,
Fut4: Future,
Origin<'__pin, Fut1, Fut2, Fut3, Fut4>: Unpin,

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

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

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

impl<T> Borrow<T> for Twhere
T: ?Sized,

impl<T> BorrowMut<T> for Twhere
T: ?Sized,

impl<T> FutureExt for Twhere
T: Future + ?Sized,

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

fn map_into<U>(self) -> MapInto<Self, U> ⓘwhere
Self::Output: Into<U>,
Self: Sized,

fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> ⓘwhere
F: FnOnce(Self::Output) -> Fut,
Fut: Future,
Self: Sized,

fn left_future<B>(self) -> Either<Self, B> ⓘwhere
B: Future<Output = Self::Output>,
Self: Sized,

fn right_future<A>(self) -> Either<A, Self> ⓘwhere
A: Future<Output = Self::Output>,
Self: Sized,

fn into_stream(self) -> IntoStream<Self>where
Self: Sized,

fn flatten(self) -> Flatten<Self> ⓘwhere
Self::Output: Future,
Self: Sized,

fn flatten_stream(self) -> FlattenStream<Self>where
Self::Output: Stream,
Self: Sized,

fn fuse(self) -> Fuse<Self> ⓘwhere
Self: Sized,

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

fn catch_unwind(self) -> CatchUnwind<Self> ⓘwhere
Self: Sized + UnwindSafe,

fn shared(self) -> Shared<Self> ⓘwhere
Self: Sized,
Self::Output: Clone,

fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)where
Self: Sized,

fn boxed<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a, Global>>where
Self: Sized + Send + 'a,

fn boxed_local<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>>where
Self: Sized + 'a,

fn unit_error(self) -> UnitError<Self> ⓘwhere
Self: Sized,

fn never_error(self) -> NeverError<Self> ⓘwhere
Self: Sized,

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

fn now_or_never(self) -> Option<Self::Output>where
Self: Sized,

impl<T, U> Into<U> for Twhere
U: From<T>,

impl<F> IntoFuture for Fwhere
F: Future,

impl<T, U> TryFrom<U> for Twhere
U: Into<T>,

impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,