[][src]Struct tokio::prelude::future::Join4

#[must_use = "futures do nothing unless polled"]
pub struct Join4<A, B, C, D> where
    A: Future,
    B: Future<Error = <A as Future>::Error>,
    C: Future<Error = <A as Future>::Error>,
    D: Future<Error = <A as Future>::Error>, 
{ /* fields omitted */ }

Future for the join4 combinator, waiting for four futures to complete.

This is created by the Future::join4 method.

Trait Implementations

impl<A, B, C, D> Future for Join4<A, B, C, D> where
    A: Future,
    B: Future<Error = <A as Future>::Error>,
    C: Future<Error = <A as Future>::Error>,
    D: Future<Error = <A as Future>::Error>, 
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type Item = (<A as Future>::Item, <B as Future>::Item, <C as Future>::Item, <D as Future>::Item)

The type of value that this future will resolved with if it is successful. Read more

type Error = <A as Future>::Error

The type of error that this future will resolve with if it fails in a normal fashion. Read more

impl<A, B, C, D> Debug for Join4<A, B, C, D> where
    A: Future + Debug,
    B: Future<Error = <A as Future>::Error> + Debug,
    C: Future<Error = <A as Future>::Error> + Debug,
    D: Future<Error = <A as Future>::Error> + Debug,
    <A as Future>::Item: Debug,
    <B as Future>::Item: Debug,
    <C as Future>::Item: Debug,
    <D as Future>::Item: Debug
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Auto Trait Implementations

impl<A, B, C, D> Send for Join4<A, B, C, D> where
    A: Send,
    B: Send,
    C: Send,
    D: Send,
    <A as Future>::Item: Send,
    <B as Future>::Item: Send,
    <C as Future>::Item: Send,
    <D as Future>::Item: Send

impl<A, B, C, D> Unpin for Join4<A, B, C, D> where
    A: Unpin,
    B: Unpin,
    C: Unpin,
    D: Unpin,
    <A as Future>::Item: Unpin,
    <B as Future>::Item: Unpin,
    <C as Future>::Item: Unpin,
    <D as Future>::Item: Unpin

impl<A, B, C, D> Sync for Join4<A, B, C, D> where
    A: Sync,
    B: Sync,
    C: Sync,
    D: Sync,
    <A as Future>::Item: Sync,
    <B as Future>::Item: Sync,
    <C as Future>::Item: Sync,
    <D as Future>::Item: Sync

impl<A, B, C, D> UnwindSafe for Join4<A, B, C, D> where
    A: UnwindSafe,
    B: UnwindSafe,
    C: UnwindSafe,
    D: UnwindSafe,
    <A as Future>::Item: UnwindSafe,
    <B as Future>::Item: UnwindSafe,
    <C as Future>::Item: UnwindSafe,
    <D as Future>::Item: UnwindSafe

impl<A, B, C, D> RefUnwindSafe for Join4<A, B, C, D> where
    A: RefUnwindSafe,
    B: RefUnwindSafe,
    C: RefUnwindSafe,
    D: RefUnwindSafe,
    <A as Future>::Item: RefUnwindSafe,
    <B as Future>::Item: RefUnwindSafe,
    <C as Future>::Item: RefUnwindSafe,
    <D as Future>::Item: RefUnwindSafe

Blanket Implementations

impl<T, U> Into<U> for T where
    U: From<T>, 
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impl<T> From<T> for T[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
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type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<T> BorrowMut<T> for T where
    T: ?Sized
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impl<T> Borrow<T> for T where
    T: ?Sized
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impl<T> Any for T where
    T: 'static + ?Sized
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impl<F> IntoFuture for F where
    F: Future
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type Future = F

The future that this type can be converted into.

type Item = <F as Future>::Item

The item that the future may resolve with.

type Error = <F as Future>::Error

The error that the future may resolve with.