[−][src]Struct futures::stream::BufferUnordered
An adaptor for a stream of futures to execute the futures concurrently, if possible, delivering results as they become available.
This adaptor will buffer up a list of pending futures, and then return their
results in the order that they complete. This is created by the
Stream::buffer_unordered
method.
Methods
impl<S> BufferUnordered<S> where
S: Stream,
S::Item: IntoFuture<Error = <S as Stream>::Error>,
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S: Stream,
S::Item: IntoFuture<Error = <S as Stream>::Error>,
pub fn get_ref(&self) -> &S
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Acquires a reference to the underlying stream that this combinator is pulling from.
pub fn get_mut(&mut self) -> &mut S
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Acquires a mutable reference to the underlying stream that this combinator is pulling from.
Note that care must be taken to avoid tampering with the state of the stream which may otherwise confuse this combinator.
pub fn into_inner(self) -> S
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Consumes this combinator, returning the underlying stream.
Note that this may discard intermediate state of this combinator, so care should be taken to avoid losing resources when this is called.
Trait Implementations
impl<S> Stream for BufferUnordered<S> where
S: Stream,
S::Item: IntoFuture<Error = <S as Stream>::Error>,
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S: Stream,
S::Item: IntoFuture<Error = <S as Stream>::Error>,
type Item = <S::Item as IntoFuture>::Item
The type of item this stream will yield on success.
type Error = <S as Stream>::Error
The type of error this stream may generate.
fn poll(&mut self) -> Poll<Option<Self::Item>, Self::Error>
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ⓘImportant traits for Wait<S>fn wait(self) -> Wait<Self> where
Self: Sized,
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Self: Sized,
fn into_future(self) -> StreamFuture<Self> where
Self: Sized,
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Self: Sized,
fn map<U, F>(self, f: F) -> Map<Self, F> where
F: FnMut(Self::Item) -> U,
Self: Sized,
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F: FnMut(Self::Item) -> U,
Self: Sized,
fn map_err<U, F>(self, f: F) -> MapErr<Self, F> where
F: FnMut(Self::Error) -> U,
Self: Sized,
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F: FnMut(Self::Error) -> U,
Self: Sized,
fn filter<F>(self, f: F) -> Filter<Self, F> where
F: FnMut(&Self::Item) -> bool,
Self: Sized,
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F: FnMut(&Self::Item) -> bool,
Self: Sized,
fn filter_map<F, B>(self, f: F) -> FilterMap<Self, F> where
F: FnMut(Self::Item) -> Option<B>,
Self: Sized,
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F: FnMut(Self::Item) -> Option<B>,
Self: Sized,
fn then<F, U>(self, f: F) -> Then<Self, F, U> where
F: FnMut(Result<Self::Item, Self::Error>) -> U,
U: IntoFuture,
Self: Sized,
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F: FnMut(Result<Self::Item, Self::Error>) -> U,
U: IntoFuture,
Self: Sized,
fn and_then<F, U>(self, f: F) -> AndThen<Self, F, U> where
F: FnMut(Self::Item) -> U,
U: IntoFuture<Error = Self::Error>,
Self: Sized,
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F: FnMut(Self::Item) -> U,
U: IntoFuture<Error = Self::Error>,
Self: Sized,
fn or_else<F, U>(self, f: F) -> OrElse<Self, F, U> where
F: FnMut(Self::Error) -> U,
U: IntoFuture<Item = Self::Item>,
Self: Sized,
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F: FnMut(Self::Error) -> U,
U: IntoFuture<Item = Self::Item>,
Self: Sized,
fn collect(self) -> Collect<Self> where
Self: Sized,
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Self: Sized,
fn concat2(self) -> Concat2<Self> where
Self: Sized,
Self::Item: Extend<<Self::Item as IntoIterator>::Item> + IntoIterator + Default,
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Self: Sized,
Self::Item: Extend<<Self::Item as IntoIterator>::Item> + IntoIterator + Default,
fn concat(self) -> Concat<Self> where
Self: Sized,
Self::Item: Extend<<Self::Item as IntoIterator>::Item> + IntoIterator,
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Self: Sized,
Self::Item: Extend<<Self::Item as IntoIterator>::Item> + IntoIterator,
fn fold<F, T, Fut>(self, init: T, f: F) -> Fold<Self, F, Fut, T> where
F: FnMut(T, Self::Item) -> Fut,
Fut: IntoFuture<Item = T>,
Self::Error: From<Fut::Error>,
Self: Sized,
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F: FnMut(T, Self::Item) -> Fut,
Fut: IntoFuture<Item = T>,
Self::Error: From<Fut::Error>,
Self: Sized,
fn flatten(self) -> Flatten<Self> where
Self::Item: Stream,
<Self::Item as Stream>::Error: From<Self::Error>,
Self: Sized,
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Self::Item: Stream,
<Self::Item as Stream>::Error: From<Self::Error>,
Self: Sized,
fn skip_while<P, R>(self, pred: P) -> SkipWhile<Self, P, R> where
P: FnMut(&Self::Item) -> R,
R: IntoFuture<Item = bool, Error = Self::Error>,
Self: Sized,
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P: FnMut(&Self::Item) -> R,
R: IntoFuture<Item = bool, Error = Self::Error>,
Self: Sized,
fn take_while<P, R>(self, pred: P) -> TakeWhile<Self, P, R> where
P: FnMut(&Self::Item) -> R,
R: IntoFuture<Item = bool, Error = Self::Error>,
Self: Sized,
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P: FnMut(&Self::Item) -> R,
R: IntoFuture<Item = bool, Error = Self::Error>,
Self: Sized,
fn for_each<F, U>(self, f: F) -> ForEach<Self, F, U> where
F: FnMut(Self::Item) -> U,
U: IntoFuture<Item = (), Error = Self::Error>,
Self: Sized,
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F: FnMut(Self::Item) -> U,
U: IntoFuture<Item = (), Error = Self::Error>,
Self: Sized,
fn from_err<E: From<Self::Error>>(self) -> FromErr<Self, E> where
Self: Sized,
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Self: Sized,
fn take(self, amt: u64) -> Take<Self> where
Self: Sized,
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Self: Sized,
fn skip(self, amt: u64) -> Skip<Self> where
Self: Sized,
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Self: Sized,
fn fuse(self) -> Fuse<Self> where
Self: Sized,
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Self: Sized,
fn by_ref(&mut self) -> &mut Self where
Self: Sized,
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Self: Sized,
fn catch_unwind(self) -> CatchUnwind<Self> where
Self: Sized + UnwindSafe,
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Self: Sized + UnwindSafe,
fn buffered(self, amt: usize) -> Buffered<Self> where
Self::Item: IntoFuture<Error = Self::Error>,
Self: Sized,
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Self::Item: IntoFuture<Error = Self::Error>,
Self: Sized,
fn buffer_unordered(self, amt: usize) -> BufferUnordered<Self> where
Self::Item: IntoFuture<Error = Self::Error>,
Self: Sized,
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Self::Item: IntoFuture<Error = Self::Error>,
Self: Sized,
fn merge<S>(self, other: S) -> Merge<Self, S> where
S: Stream<Error = Self::Error>,
Self: Sized,
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S: Stream<Error = Self::Error>,
Self: Sized,
fn zip<S>(self, other: S) -> Zip<Self, S> where
S: Stream<Error = Self::Error>,
Self: Sized,
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S: Stream<Error = Self::Error>,
Self: Sized,
fn chain<S>(self, other: S) -> Chain<Self, S> where
S: Stream<Item = Self::Item, Error = Self::Error>,
Self: Sized,
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S: Stream<Item = Self::Item, Error = Self::Error>,
Self: Sized,
fn peekable(self) -> Peekable<Self> where
Self: Sized,
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Self: Sized,
fn chunks(self, capacity: usize) -> Chunks<Self> where
Self: Sized,
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Self: Sized,
fn select<S>(self, other: S) -> Select<Self, S> where
S: Stream<Item = Self::Item, Error = Self::Error>,
Self: Sized,
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S: Stream<Item = Self::Item, Error = Self::Error>,
Self: Sized,
fn forward<S>(self, sink: S) -> Forward<Self, S> where
S: Sink<SinkItem = Self::Item>,
Self::Error: From<S::SinkError>,
Self: Sized,
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S: Sink<SinkItem = Self::Item>,
Self::Error: From<S::SinkError>,
Self: Sized,
fn split(self) -> (SplitSink<Self>, SplitStream<Self>) where
Self: Sink + Sized,
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Self: Sink + Sized,
fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnMut(&Self::Item),
Self: Sized,
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F: FnMut(&Self::Item),
Self: Sized,
fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where
F: FnMut(&Self::Error),
Self: Sized,
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F: FnMut(&Self::Error),
Self: Sized,
impl<S> Sink for BufferUnordered<S> where
S: Sink + Stream,
S::Item: IntoFuture,
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S: Sink + Stream,
S::Item: IntoFuture,
type SinkItem = S::SinkItem
The type of value that the sink accepts.
type SinkError = S::SinkError
The type of value produced by the sink when an error occurs.
fn start_send(
&mut self,
item: S::SinkItem
) -> StartSend<S::SinkItem, S::SinkError>
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&mut self,
item: S::SinkItem
) -> StartSend<S::SinkItem, S::SinkError>
fn poll_complete(&mut self) -> Poll<(), S::SinkError>
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fn close(&mut self) -> Poll<(), S::SinkError>
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fn wait(self) -> Wait<Self> where
Self: Sized,
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Self: Sized,
fn with<U, F, Fut>(self, f: F) -> With<Self, U, F, Fut> where
F: FnMut(U) -> Fut,
Fut: IntoFuture<Item = Self::SinkItem>,
Fut::Error: From<Self::SinkError>,
Self: Sized,
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F: FnMut(U) -> Fut,
Fut: IntoFuture<Item = Self::SinkItem>,
Fut::Error: From<Self::SinkError>,
Self: Sized,
fn with_flat_map<U, F, St>(self, f: F) -> WithFlatMap<Self, U, F, St> where
F: FnMut(U) -> St,
St: Stream<Item = Self::SinkItem, Error = Self::SinkError>,
Self: Sized,
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F: FnMut(U) -> St,
St: Stream<Item = Self::SinkItem, Error = Self::SinkError>,
Self: Sized,
fn sink_map_err<F, E>(self, f: F) -> SinkMapErr<Self, F> where
F: FnOnce(Self::SinkError) -> E,
Self: Sized,
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F: FnOnce(Self::SinkError) -> E,
Self: Sized,
fn sink_from_err<E: From<Self::SinkError>>(self) -> SinkFromErr<Self, E> where
Self: Sized,
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Self: Sized,
fn buffer(self, amt: usize) -> Buffer<Self> where
Self: Sized,
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Self: Sized,
fn fanout<S>(self, other: S) -> Fanout<Self, S> where
Self: Sized,
Self::SinkItem: Clone,
S: Sink<SinkItem = Self::SinkItem, SinkError = Self::SinkError>,
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Self: Sized,
Self::SinkItem: Clone,
S: Sink<SinkItem = Self::SinkItem, SinkError = Self::SinkError>,
fn flush(self) -> Flush<Self> where
Self: Sized,
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Self: Sized,
fn send(self, item: Self::SinkItem) -> Send<Self> where
Self: Sized,
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Self: Sized,
fn send_all<S>(self, stream: S) -> SendAll<Self, S> where
S: Stream<Item = Self::SinkItem>,
Self::SinkError: From<S::Error>,
Self: Sized,
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S: Stream<Item = Self::SinkItem>,
Self::SinkError: From<S::Error>,
Self: Sized,
impl<S> Debug for BufferUnordered<S> where
S: Stream + Debug,
S::Item: IntoFuture,
<<S as Stream>::Item as IntoFuture>::Future: Debug,
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S: Stream + Debug,
S::Item: IntoFuture,
<<S as Stream>::Item as IntoFuture>::Future: Debug,
Auto Trait Implementations
impl<S> Unpin for BufferUnordered<S> where
S: Unpin,
S: Unpin,
impl<S> Send for BufferUnordered<S> where
S: Send,
<<S as Stream>::Item as IntoFuture>::Future: Send,
S: Send,
<<S as Stream>::Item as IntoFuture>::Future: Send,
impl<S> Sync for BufferUnordered<S> where
S: Sync,
<<S as Stream>::Item as IntoFuture>::Future: Sync,
S: Sync,
<<S as Stream>::Item as IntoFuture>::Future: Sync,
impl<S> !UnwindSafe for BufferUnordered<S>
impl<S> !RefUnwindSafe for BufferUnordered<S>
Blanket Implementations
impl<T> From<T> for T
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,