Struct futures::stream::FuturesOrdered [−][src]
#[must_use = "streams do nothing unless polled"]pub struct FuturesOrdered<T> where
T: Future, { /* fields omitted */ }
Expand description
An unbounded queue of futures.
This “combinator” is similar to FuturesUnordered
, but it imposes an order
on top of the set of futures. While futures in the set will race to
completion in parallel, results will only be returned in the order their
originating futures were added to the queue.
Futures are pushed into this queue and their realized values are yielded in
order. This structure is optimized to manage a large number of futures.
Futures managed by FuturesOrdered
will only be polled when they generate
notifications. This reduces the required amount of work needed to coordinate
large numbers of futures.
When a FuturesOrdered
is first created, it does not contain any futures.
Calling poll
in this state will result in Poll::Ready(None))
to be
returned. Futures are submitted to the queue using push
; however, the
future will not be polled at this point. FuturesOrdered
will only
poll managed futures when FuturesOrdered::poll
is called. As such, it
is important to call poll
after pushing new futures.
If FuturesOrdered::poll
returns Poll::Ready(None)
this means that
the queue is currently not managing any futures. A future may be submitted
to the queue at a later time. At that point, a call to
FuturesOrdered::poll
will either return the future’s resolved value
or Poll::Pending
if the future has not yet completed. When
multiple futures are submitted to the queue, FuturesOrdered::poll
will
return Poll::Pending
until the first future completes, even if
some of the later futures have already completed.
Note that you can create a ready-made FuturesOrdered
via the
collect
method, or you can start with an empty queue
with the FuturesOrdered::new
constructor.
This type is only available when the std
or alloc
feature of this
library is activated, and it is activated by default.
Implementations
impl<Fut> FuturesOrdered<Fut> where
Fut: Future,
[src]
impl<Fut> FuturesOrdered<Fut> where
Fut: Future,
[src]pub fn new() -> FuturesOrdered<Fut>
[src]
pub fn new() -> FuturesOrdered<Fut>
[src]Constructs a new, empty FuturesOrdered
The returned FuturesOrdered
does not contain any futures and, in this
state, FuturesOrdered::poll_next
will return Poll::Ready(None)
.
Trait Implementations
impl<Fut> Debug for FuturesOrdered<Fut> where
Fut: Future,
[src]
impl<Fut> Debug for FuturesOrdered<Fut> where
Fut: Future,
[src]impl<Fut> Default for FuturesOrdered<Fut> where
Fut: Future,
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impl<Fut> Default for FuturesOrdered<Fut> where
Fut: Future,
[src]pub fn default() -> FuturesOrdered<Fut>
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pub fn default() -> FuturesOrdered<Fut>
[src]Returns the “default value” for a type. Read more
impl<Fut> Extend<Fut> for FuturesOrdered<Fut> where
Fut: Future,
[src]
impl<Fut> Extend<Fut> for FuturesOrdered<Fut> where
Fut: Future,
[src]pub fn extend<I>(&mut self, iter: I) where
I: IntoIterator<Item = Fut>,
[src]
pub fn extend<I>(&mut self, iter: I) where
I: IntoIterator<Item = Fut>,
[src]Extends a collection with the contents of an iterator. Read more
fn extend_one(&mut self, item: A)
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fn extend_one(&mut self, item: A)
[src]extend_one
)Extends a collection with exactly one element.
fn extend_reserve(&mut self, additional: usize)
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fn extend_reserve(&mut self, additional: usize)
[src]extend_one
)Reserves capacity in a collection for the given number of additional elements. Read more
impl<Fut> FromIterator<Fut> for FuturesOrdered<Fut> where
Fut: Future,
[src]
impl<Fut> FromIterator<Fut> for FuturesOrdered<Fut> where
Fut: Future,
[src]pub fn from_iter<T>(iter: T) -> FuturesOrdered<Fut> where
T: IntoIterator<Item = Fut>,
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pub fn from_iter<T>(iter: T) -> FuturesOrdered<Fut> where
T: IntoIterator<Item = Fut>,
[src]Creates a value from an iterator. Read more
impl<Fut> FusedStream for FuturesOrdered<Fut> where
Fut: Future,
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impl<Fut> FusedStream for FuturesOrdered<Fut> where
Fut: Future,
[src]pub fn is_terminated(&self) -> bool
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pub fn is_terminated(&self) -> bool
[src]Returns true
if the stream should no longer be polled.
impl<Fut> Stream for FuturesOrdered<Fut> where
Fut: Future,
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impl<Fut> Stream for FuturesOrdered<Fut> where
Fut: Future,
[src]pub fn poll_next(
self: Pin<&mut FuturesOrdered<Fut>>,
cx: &mut Context<'_>
) -> Poll<Option<<FuturesOrdered<Fut> as Stream>::Item>>
[src]
pub fn poll_next(
self: Pin<&mut FuturesOrdered<Fut>>,
cx: &mut Context<'_>
) -> Poll<Option<<FuturesOrdered<Fut> as Stream>::Item>>
[src]Attempt to pull out the next value of this stream, registering the
current task for wakeup if the value is not yet available, and returning
None
if the stream is exhausted. Read more
impl<T> Unpin for FuturesOrdered<T> where
T: Future,
[src]
T: Future,
Auto Trait Implementations
impl<T> !RefUnwindSafe for FuturesOrdered<T>
impl<T> Send for FuturesOrdered<T> where
T: Send,
<T as Future>::Output: Send,
T: Send,
<T as Future>::Output: Send,
impl<T> Sync for FuturesOrdered<T> where
T: Sync,
<T as Future>::Output: Sync,
T: Sync,
<T as Future>::Output: Sync,
impl<T> !UnwindSafe for FuturesOrdered<T>
Blanket Implementations
impl<T> BorrowMut<T> for T where
T: ?Sized,
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impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]pub fn borrow_mut(&mut self) -> &mut T
[src]
pub fn borrow_mut(&mut self) -> &mut T
[src]Mutably borrows from an owned value. Read more
impl<T> StreamExt for T where
T: Stream + ?Sized,
[src]
impl<T> StreamExt for T where
T: Stream + ?Sized,
[src]fn next(&mut self) -> Next<'_, Self>ⓘ where
Self: Unpin,
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fn next(&mut self) -> Next<'_, Self>ⓘ where
Self: Unpin,
[src]Creates a future that resolves to the next item in the stream. Read more
fn into_future(self) -> StreamFuture<Self>ⓘ where
Self: Unpin,
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fn into_future(self) -> StreamFuture<Self>ⓘ where
Self: Unpin,
[src]fn map<T, F>(self, f: F) -> Map<Self, F> where
F: FnMut(Self::Item) -> T,
[src]
fn map<T, F>(self, f: F) -> Map<Self, F> where
F: FnMut(Self::Item) -> T,
[src]Maps this stream’s items to a different type, returning a new stream of the resulting type. Read more
fn enumerate(self) -> Enumerate<Self>
[src]
fn enumerate(self) -> Enumerate<Self>
[src]Creates a stream which gives the current iteration count as well as the next value. Read more
fn filter<Fut, F>(self, f: F) -> Filter<Self, Fut, F> where
F: FnMut(&Self::Item) -> Fut,
Fut: Future<Output = bool>,
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fn filter<Fut, F>(self, f: F) -> Filter<Self, Fut, F> where
F: FnMut(&Self::Item) -> Fut,
Fut: Future<Output = bool>,
[src]Filters the values produced by this stream according to the provided asynchronous predicate. Read more
fn filter_map<Fut, T, F>(self, f: F) -> FilterMap<Self, Fut, F> where
F: FnMut(Self::Item) -> Fut,
Fut: Future<Output = Option<T>>,
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fn filter_map<Fut, T, F>(self, f: F) -> FilterMap<Self, Fut, F> where
F: FnMut(Self::Item) -> Fut,
Fut: Future<Output = Option<T>>,
[src]Filters the values produced by this stream while simultaneously mapping them to a different type according to the provided asynchronous closure. Read more
fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where
F: FnMut(Self::Item) -> Fut,
Fut: Future,
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fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where
F: FnMut(Self::Item) -> Fut,
Fut: Future,
[src]Computes from this stream’s items new items of a different type using an asynchronous closure. Read more
fn collect<C>(self) -> Collect<Self, C>ⓘ where
C: Default + Extend<Self::Item>,
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fn collect<C>(self) -> Collect<Self, C>ⓘ where
C: Default + Extend<Self::Item>,
[src]Transforms a stream into a collection, returning a future representing the result of that computation. Read more
fn unzip<A, B, FromA, FromB>(self) -> Unzip<Self, FromA, FromB>ⓘ where
Self: Stream<Item = (A, B)>,
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
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fn unzip<A, B, FromA, FromB>(self) -> Unzip<Self, FromA, FromB>ⓘ where
Self: Stream<Item = (A, B)>,
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
[src]Converts a stream of pairs into a future, which resolves to pair of containers. Read more
fn concat(self) -> Concat<Self>ⓘ where
Self::Item: Extend<<Self::Item as IntoIterator>::Item>,
Self::Item: IntoIterator,
Self::Item: Default,
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fn concat(self) -> Concat<Self>ⓘ where
Self::Item: Extend<<Self::Item as IntoIterator>::Item>,
Self::Item: IntoIterator,
Self::Item: Default,
[src]Concatenate all items of a stream into a single extendable destination, returning a future representing the end result. Read more
fn fold<T, Fut, F>(self, init: T, f: F) -> Fold<Self, Fut, T, F>ⓘ where
F: FnMut(T, Self::Item) -> Fut,
Fut: Future<Output = T>,
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fn fold<T, Fut, F>(self, init: T, f: F) -> Fold<Self, Fut, T, F>ⓘ where
F: FnMut(T, Self::Item) -> Fut,
Fut: Future<Output = T>,
[src]Execute an accumulating asynchronous computation over a stream, collecting all the values into one final result. Read more
fn flatten(self) -> Flatten<Self> where
Self::Item: Stream,
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fn flatten(self) -> Flatten<Self> where
Self::Item: Stream,
[src]Flattens a stream of streams into just one continuous stream. Read more
fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F> where
F: FnMut(Self::Item) -> U,
U: Stream,
[src]
fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F> where
F: FnMut(Self::Item) -> U,
U: Stream,
[src]Maps a stream like StreamExt::map
but flattens nested Stream
s. Read more
fn scan<S, B, Fut, F>(self, initial_state: S, f: F) -> Scan<Self, S, Fut, F> where
F: FnMut(&mut S, Self::Item) -> Fut,
Fut: Future<Output = Option<B>>,
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fn scan<S, B, Fut, F>(self, initial_state: S, f: F) -> Scan<Self, S, Fut, F> where
F: FnMut(&mut S, Self::Item) -> Fut,
Fut: Future<Output = Option<B>>,
[src]Combinator similar to StreamExt::fold
that holds internal state
and produces a new stream. Read more
fn skip_while<Fut, F>(self, f: F) -> SkipWhile<Self, Fut, F> where
F: FnMut(&Self::Item) -> Fut,
Fut: Future<Output = bool>,
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fn skip_while<Fut, F>(self, f: F) -> SkipWhile<Self, Fut, F> where
F: FnMut(&Self::Item) -> Fut,
Fut: Future<Output = bool>,
[src]Skip elements on this stream while the provided asynchronous predicate
resolves to true
. Read more
fn take_while<Fut, F>(self, f: F) -> TakeWhile<Self, Fut, F> where
F: FnMut(&Self::Item) -> Fut,
Fut: Future<Output = bool>,
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fn take_while<Fut, F>(self, f: F) -> TakeWhile<Self, Fut, F> where
F: FnMut(&Self::Item) -> Fut,
Fut: Future<Output = bool>,
[src]Take elements from this stream while the provided asynchronous predicate
resolves to true
. Read more
fn take_until<Fut>(self, fut: Fut) -> TakeUntil<Self, Fut> where
Fut: Future,
[src]
fn take_until<Fut>(self, fut: Fut) -> TakeUntil<Self, Fut> where
Fut: Future,
[src]Take elements from this stream until the provided future resolves. Read more
fn for_each<Fut, F>(self, f: F) -> ForEach<Self, Fut, F>ⓘ where
F: FnMut(Self::Item) -> Fut,
Fut: Future<Output = ()>,
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fn for_each<Fut, F>(self, f: F) -> ForEach<Self, Fut, F>ⓘ where
F: FnMut(Self::Item) -> Fut,
Fut: Future<Output = ()>,
[src]Runs this stream to completion, executing the provided asynchronous closure for each element on the stream. Read more
fn for_each_concurrent<Fut, F>(
self,
limit: impl Into<Option<usize>>,
f: F
) -> ForEachConcurrent<Self, Fut, F>ⓘ where
F: FnMut(Self::Item) -> Fut,
Fut: Future<Output = ()>,
[src]
fn for_each_concurrent<Fut, F>(
self,
limit: impl Into<Option<usize>>,
f: F
) -> ForEachConcurrent<Self, Fut, F>ⓘ where
F: FnMut(Self::Item) -> Fut,
Fut: Future<Output = ()>,
[src]Runs this stream to completion, executing the provided asynchronous closure for each element on the stream concurrently as elements become available. Read more
fn take(self, n: usize) -> Take<Self>
[src]
fn take(self, n: usize) -> Take<Self>
[src]Creates a new stream of at most n
items of the underlying stream. Read more
fn skip(self, n: usize) -> Skip<Self>
[src]
fn skip(self, n: usize) -> Skip<Self>
[src]Creates a new stream which skips n
items of the underlying stream. Read more
fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe,
[src]
fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe,
[src]Catches unwinding panics while polling the stream. Read more
fn boxed<'a>(
self
) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a + Send, Global>>ⓘ where
Self: Send + 'a,
[src]
fn boxed<'a>(
self
) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a + Send, Global>>ⓘ where
Self: Send + 'a,
[src]Wrap the stream in a Box, pinning it. Read more
fn boxed_local<'a>(self) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a, Global>>ⓘ where
Self: 'a,
[src]
fn boxed_local<'a>(self) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a, Global>>ⓘ where
Self: 'a,
[src]Wrap the stream in a Box, pinning it. Read more
fn buffered(self, n: usize) -> Buffered<Self> where
Self::Item: Future,
[src]
fn buffered(self, n: usize) -> Buffered<Self> where
Self::Item: Future,
[src]An adaptor for creating a buffered list of pending futures. Read more
fn buffer_unordered(self, n: usize) -> BufferUnordered<Self> where
Self::Item: Future,
[src]
fn buffer_unordered(self, n: usize) -> BufferUnordered<Self> where
Self::Item: Future,
[src]An adaptor for creating a buffered list of pending futures (unordered). Read more
fn zip<St>(self, other: St) -> Zip<Self, St> where
St: Stream,
[src]
fn zip<St>(self, other: St) -> Zip<Self, St> where
St: Stream,
[src]An adapter for zipping two streams together. Read more
fn chain<St>(self, other: St) -> Chain<Self, St> where
St: Stream<Item = Self::Item>,
[src]
fn chain<St>(self, other: St) -> Chain<Self, St> where
St: Stream<Item = Self::Item>,
[src]Adapter for chaining two streams. Read more
fn chunks(self, capacity: usize) -> Chunks<Self>
[src]
fn chunks(self, capacity: usize) -> Chunks<Self>
[src]An adaptor for chunking up items of the stream inside a vector. Read more
fn ready_chunks(self, capacity: usize) -> ReadyChunks<Self>
[src]
fn ready_chunks(self, capacity: usize) -> ReadyChunks<Self>
[src]An adaptor for chunking up ready items of the stream inside a vector. Read more
fn forward<S>(self, sink: S) -> Forward<Self, S>ⓘ where
Self: TryStream,
S: Sink<Self::Ok, Error = Self::Error>,
[src]
fn forward<S>(self, sink: S) -> Forward<Self, S>ⓘ where
Self: TryStream,
S: Sink<Self::Ok, Error = Self::Error>,
[src]A future that completes after the given stream has been fully processed into the sink and the sink has been flushed and closed. Read more
fn split<Item>(self) -> (SplitSink<Self, Item>, SplitStream<Self>) where
Self: Sink<Item>,
[src]
fn split<Item>(self) -> (SplitSink<Self, Item>, SplitStream<Self>) where
Self: Sink<Item>,
[src]Splits this Stream + Sink
object into separate Sink
and Stream
objects. Read more
fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnMut(&Self::Item),
[src]
fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnMut(&Self::Item),
[src]Do something with each item of this stream, afterwards passing it on. Read more
fn left_stream<B>(self) -> Either<Self, B>ⓘ where
B: Stream<Item = Self::Item>,
[src]
fn left_stream<B>(self) -> Either<Self, B>ⓘ where
B: Stream<Item = Self::Item>,
[src]Wrap this stream in an Either
stream, making it the left-hand variant
of that Either
. Read more
fn right_stream<B>(self) -> Either<B, Self>ⓘ where
B: Stream<Item = Self::Item>,
[src]
fn right_stream<B>(self) -> Either<B, Self>ⓘ where
B: Stream<Item = Self::Item>,
[src]Wrap this stream in an Either
stream, making it the right-hand variant
of that Either
. Read more
fn poll_next_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> where
Self: Unpin,
[src]
fn poll_next_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> where
Self: Unpin,
[src]A convenience method for calling Stream::poll_next
on Unpin
stream types. Read more
fn select_next_some(&mut self) -> SelectNextSome<'_, Self>ⓘNotable traits for SelectNextSome<'_, St>
impl<'_, St> Future for SelectNextSome<'_, St> where
St: FusedStream + Unpin + ?Sized, type Output = <St as Stream>::Item;
where
Self: Unpin + FusedStream,
[src]
fn select_next_some(&mut self) -> SelectNextSome<'_, Self>ⓘNotable traits for SelectNextSome<'_, St>
impl<'_, St> Future for SelectNextSome<'_, St> where
St: FusedStream + Unpin + ?Sized, type Output = <St as Stream>::Item;
where
Self: Unpin + FusedStream,
[src]impl<S, T, E> TryStream for S where
S: Stream<Item = Result<T, E>> + ?Sized,
[src]
impl<S, T, E> TryStream for S where
S: Stream<Item = Result<T, E>> + ?Sized,
[src]impl<S> TryStreamExt for S where
S: TryStream + ?Sized,
[src]
impl<S> TryStreamExt for S where
S: TryStream + ?Sized,
[src]fn err_into<E>(self) -> ErrInto<Self, E> where
Self::Error: Into<E>,
[src]
fn err_into<E>(self) -> ErrInto<Self, E> where
Self::Error: Into<E>,
[src]Wraps the current stream in a new stream which converts the error type into the one provided. Read more
fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where
F: FnMut(Self::Ok) -> T,
[src]
fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where
F: FnMut(Self::Ok) -> T,
[src]Wraps the current stream in a new stream which maps the success value using the provided closure. Read more
fn map_err<E, F>(self, f: F) -> MapErr<Self, F> where
F: FnMut(Self::Error) -> E,
[src]
fn map_err<E, F>(self, f: F) -> MapErr<Self, F> where
F: FnMut(Self::Error) -> E,
[src]Wraps the current stream in a new stream which maps the error value using the provided closure. Read more
fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where
F: FnMut(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,
[src]
fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where
F: FnMut(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,
[src]Chain on a computation for when a value is ready, passing the successful
results to the provided closure f
. Read more
fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> where
F: FnMut(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,
[src]
fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> where
F: FnMut(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,
[src]Chain on a computation for when an error happens, passing the
erroneous result to the provided closure f
. Read more
fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> where
F: FnMut(&Self::Ok),
[src]
fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> where
F: FnMut(&Self::Ok),
[src]Do something with the success value of this stream, afterwards passing it on. Read more
fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where
F: FnMut(&Self::Error),
[src]
fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where
F: FnMut(&Self::Error),
[src]Do something with the error value of this stream, afterwards passing it on. Read more
fn into_stream(self) -> IntoStream<Self>
[src]
fn into_stream(self) -> IntoStream<Self>
[src]fn try_next(&mut self) -> TryNext<'_, Self>ⓘ where
Self: Unpin,
[src]
fn try_next(&mut self) -> TryNext<'_, Self>ⓘ where
Self: Unpin,
[src]Creates a future that attempts to resolve the next item in the stream. If an error is encountered before the next item, the error is returned instead. Read more
fn try_for_each<Fut, F>(self, f: F) -> TryForEach<Self, Fut, F>ⓘ where
F: FnMut(Self::Ok) -> Fut,
Fut: TryFuture<Ok = (), Error = Self::Error>,
[src]
fn try_for_each<Fut, F>(self, f: F) -> TryForEach<Self, Fut, F>ⓘ where
F: FnMut(Self::Ok) -> Fut,
Fut: TryFuture<Ok = (), Error = Self::Error>,
[src]Attempts to run this stream to completion, executing the provided asynchronous closure for each element on the stream. Read more
fn try_skip_while<Fut, F>(self, f: F) -> TrySkipWhile<Self, Fut, F> where
F: FnMut(&Self::Ok) -> Fut,
Fut: TryFuture<Ok = bool, Error = Self::Error>,
[src]
fn try_skip_while<Fut, F>(self, f: F) -> TrySkipWhile<Self, Fut, F> where
F: FnMut(&Self::Ok) -> Fut,
Fut: TryFuture<Ok = bool, Error = Self::Error>,
[src]Skip elements on this stream while the provided asynchronous predicate
resolves to true
. Read more
fn try_take_while<Fut, F>(self, f: F) -> TryTakeWhile<Self, Fut, F> where
F: FnMut(&Self::Ok) -> Fut,
Fut: TryFuture<Ok = bool, Error = Self::Error>,
[src]
fn try_take_while<Fut, F>(self, f: F) -> TryTakeWhile<Self, Fut, F> where
F: FnMut(&Self::Ok) -> Fut,
Fut: TryFuture<Ok = bool, Error = Self::Error>,
[src]Take elements on this stream while the provided asynchronous predicate
resolves to true
. Read more
fn try_for_each_concurrent<Fut, F>(
self,
limit: impl Into<Option<usize>>,
f: F
) -> TryForEachConcurrent<Self, Fut, F>ⓘ where
F: FnMut(Self::Ok) -> Fut,
Fut: Future<Output = Result<(), Self::Error>>,
[src]
fn try_for_each_concurrent<Fut, F>(
self,
limit: impl Into<Option<usize>>,
f: F
) -> TryForEachConcurrent<Self, Fut, F>ⓘ where
F: FnMut(Self::Ok) -> Fut,
Fut: Future<Output = Result<(), Self::Error>>,
[src]Attempts to run this stream to completion, executing the provided asynchronous closure for each element on the stream concurrently as elements become available, exiting as soon as an error occurs. Read more
fn try_collect<C>(self) -> TryCollect<Self, C>ⓘ where
C: Default + Extend<Self::Ok>,
[src]
fn try_collect<C>(self) -> TryCollect<Self, C>ⓘ where
C: Default + Extend<Self::Ok>,
[src]Attempt to transform a stream into a collection, returning a future representing the result of that computation. Read more
fn try_filter<Fut, F>(self, f: F) -> TryFilter<Self, Fut, F> where
F: FnMut(&Self::Ok) -> Fut,
Fut: Future<Output = bool>,
[src]
fn try_filter<Fut, F>(self, f: F) -> TryFilter<Self, Fut, F> where
F: FnMut(&Self::Ok) -> Fut,
Fut: Future<Output = bool>,
[src]Attempt to filter the values produced by this stream according to the provided asynchronous closure. Read more
fn try_filter_map<Fut, F, T>(self, f: F) -> TryFilterMap<Self, Fut, F> where
F: FnMut(Self::Ok) -> Fut,
Fut: TryFuture<Ok = Option<T>, Error = Self::Error>,
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fn try_filter_map<Fut, F, T>(self, f: F) -> TryFilterMap<Self, Fut, F> where
F: FnMut(Self::Ok) -> Fut,
Fut: TryFuture<Ok = Option<T>, Error = Self::Error>,
[src]Attempt to filter the values produced by this stream while simultaneously mapping them to a different type according to the provided asynchronous closure. Read more
fn try_flatten(self) -> TryFlatten<Self> where
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error: From<Self::Error>,
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fn try_flatten(self) -> TryFlatten<Self> where
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error: From<Self::Error>,
[src]Flattens a stream of streams into just one continuous stream. Read more
fn try_fold<T, Fut, F>(self, init: T, f: F) -> TryFold<Self, Fut, T, F>ⓘ where
F: FnMut(T, Self::Ok) -> Fut,
Fut: TryFuture<Ok = T, Error = Self::Error>,
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fn try_fold<T, Fut, F>(self, init: T, f: F) -> TryFold<Self, Fut, T, F>ⓘ where
F: FnMut(T, Self::Ok) -> Fut,
Fut: TryFuture<Ok = T, Error = Self::Error>,
[src]Attempt to execute an accumulating asynchronous computation over a stream, collecting all the values into one final result. Read more
fn try_concat(self) -> TryConcat<Self>ⓘNotable traits for TryConcat<St>
impl<St> Future for TryConcat<St> where
St: TryStream,
<St as TryStream>::Ok: Extend<<<St as TryStream>::Ok as IntoIterator>::Item>,
<St as TryStream>::Ok: IntoIterator,
<St as TryStream>::Ok: Default, type Output = Result<<St as TryStream>::Ok, <St as TryStream>::Error>;
where
Self::Ok: Extend<<Self::Ok as IntoIterator>::Item>,
Self::Ok: IntoIterator,
Self::Ok: Default,
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fn try_concat(self) -> TryConcat<Self>ⓘNotable traits for TryConcat<St>
impl<St> Future for TryConcat<St> where
St: TryStream,
<St as TryStream>::Ok: Extend<<<St as TryStream>::Ok as IntoIterator>::Item>,
<St as TryStream>::Ok: IntoIterator,
<St as TryStream>::Ok: Default, type Output = Result<<St as TryStream>::Ok, <St as TryStream>::Error>;
where
Self::Ok: Extend<<Self::Ok as IntoIterator>::Item>,
Self::Ok: IntoIterator,
Self::Ok: Default,
[src]Attempt to concatenate all items of a stream into a single extendable destination, returning a future representing the end result. Read more
fn try_buffer_unordered(self, n: usize) -> TryBufferUnordered<Self> where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,
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fn try_buffer_unordered(self, n: usize) -> TryBufferUnordered<Self> where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,
[src]Attempt to execute several futures from a stream concurrently (unordered). Read more
fn try_buffered(self, n: usize) -> TryBuffered<Self> where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,
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fn try_buffered(self, n: usize) -> TryBuffered<Self> where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,
[src]Attempt to execute several futures from a stream concurrently. Read more
fn try_poll_next_unpin(
&mut self,
cx: &mut Context<'_>
) -> Poll<Option<Result<Self::Ok, Self::Error>>> where
Self: Unpin,
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fn try_poll_next_unpin(
&mut self,
cx: &mut Context<'_>
) -> Poll<Option<Result<Self::Ok, Self::Error>>> where
Self: Unpin,
[src]A convenience method for calling TryStream::try_poll_next
on Unpin
stream types. Read more
fn into_async_read(self) -> IntoAsyncRead<Self> where
Self: TryStreamExt<Error = Error> + Unpin,
Self::Ok: AsRef<[u8]>,
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fn into_async_read(self) -> IntoAsyncRead<Self> where
Self: TryStreamExt<Error = Error> + Unpin,
Self::Ok: AsRef<[u8]>,
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