Struct futures::prelude::stream::BufferUnordered [−][src]
#[must_use = "streams do nothing unless polled"]pub struct BufferUnordered<St> where
St: Stream, { /* fields omitted */ }
Stream for the buffer_unordered
method.
Implementations
impl<St> BufferUnordered<St> where
St: Stream,
<St as Stream>::Item: Future,
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St: Stream,
<St as Stream>::Item: Future,
pub fn get_ref(&self) -> &Stⓘ
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Acquires a reference to the underlying sink or stream that this combinator is pulling from.
pub fn get_mut(&mut self) -> &mut Stⓘ
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Acquires a mutable reference to the underlying sink or stream that this combinator is pulling from.
Note that care must be taken to avoid tampering with the state of the sink or stream which may otherwise confuse this combinator.
pub fn get_pin_mut(self: Pin<&mut BufferUnordered<St>>) -> Pin<&mut St>ⓘ
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Acquires a pinned mutable reference to the underlying sink or stream that this combinator is pulling from.
Note that care must be taken to avoid tampering with the state of the sink or stream which may otherwise confuse this combinator.
pub fn into_inner(self) -> St
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Consumes this combinator, returning the underlying sink or 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<St> Debug for BufferUnordered<St> where
St: Stream + Debug,
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St: Stream + Debug,
pub fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
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Formats the value using the given formatter. Read more
impl<St> FusedStream for BufferUnordered<St> where
St: Stream,
<St as Stream>::Item: Future,
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St: Stream,
<St as Stream>::Item: Future,
pub fn is_terminated(&self) -> bool
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Returns true
if the stream should no longer be polled.
impl<S, Item> Sink<Item> for BufferUnordered<S> where
S: Stream + Sink<Item>,
<S as Stream>::Item: Future,
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S: Stream + Sink<Item>,
<S as Stream>::Item: Future,
type Error = <S as Sink<Item>>::Error
The type of value produced by the sink when an error occurs.
pub fn poll_ready(
self: Pin<&mut BufferUnordered<S>>,
cx: &mut Context<'_>
) -> Poll<Result<(), <BufferUnordered<S> as Sink<Item>>::Error>>
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self: Pin<&mut BufferUnordered<S>>,
cx: &mut Context<'_>
) -> Poll<Result<(), <BufferUnordered<S> as Sink<Item>>::Error>>
Attempts to prepare the Sink
to receive a value. Read more
pub fn start_send(
self: Pin<&mut BufferUnordered<S>>,
item: Item
) -> Result<(), <BufferUnordered<S> as Sink<Item>>::Error>
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self: Pin<&mut BufferUnordered<S>>,
item: Item
) -> Result<(), <BufferUnordered<S> as Sink<Item>>::Error>
Begin the process of sending a value to the sink.
Each call to this function must be preceded by a successful call to
poll_ready
which returned Poll::Ready(Ok(()))
. Read more
pub fn poll_flush(
self: Pin<&mut BufferUnordered<S>>,
cx: &mut Context<'_>
) -> Poll<Result<(), <BufferUnordered<S> as Sink<Item>>::Error>>
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self: Pin<&mut BufferUnordered<S>>,
cx: &mut Context<'_>
) -> Poll<Result<(), <BufferUnordered<S> as Sink<Item>>::Error>>
Flush any remaining output from this sink. Read more
pub fn poll_close(
self: Pin<&mut BufferUnordered<S>>,
cx: &mut Context<'_>
) -> Poll<Result<(), <BufferUnordered<S> as Sink<Item>>::Error>>
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self: Pin<&mut BufferUnordered<S>>,
cx: &mut Context<'_>
) -> Poll<Result<(), <BufferUnordered<S> as Sink<Item>>::Error>>
Flush any remaining output and close this sink, if necessary. Read more
impl<St> Stream for BufferUnordered<St> where
St: Stream,
<St as Stream>::Item: Future,
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St: Stream,
<St as Stream>::Item: Future,
type Item = <<St as Stream>::Item as Future>::Output
Values yielded by the stream.
pub fn poll_next(
self: Pin<&mut BufferUnordered<St>>,
cx: &mut Context<'_>
) -> Poll<Option<<BufferUnordered<St> as Stream>::Item>>
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self: Pin<&mut BufferUnordered<St>>,
cx: &mut Context<'_>
) -> Poll<Option<<BufferUnordered<St> as Stream>::Item>>
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
pub fn size_hint(&self) -> (usize, Option<usize>)
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Returns the bounds on the remaining length of the stream. Read more
impl<'__pin, St> Unpin for BufferUnordered<St> where
St: Stream,
__Origin<'__pin, St>: Unpin,
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St: Stream,
__Origin<'__pin, St>: Unpin,
Auto Trait Implementations
impl<St> !RefUnwindSafe for BufferUnordered<St>
impl<St> Send for BufferUnordered<St> where
St: Send,
<St as Stream>::Item: Send,
St: Send,
<St as Stream>::Item: Send,
impl<St> Sync for BufferUnordered<St> where
St: Sync,
<St as Stream>::Item: Sync,
St: Sync,
<St as Stream>::Item: Sync,
impl<St> !UnwindSafe for BufferUnordered<St>
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
pub fn type_id(&self) -> TypeId
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Gets the TypeId
of self
. Read more
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow(&self) -> &Tⓘ
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Immutably borrows from an owned value. Read more
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut Tⓘ
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Mutably borrows from an owned value. Read more
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, Item> SinkExt<Item> for T where
T: Sink<Item> + ?Sized,
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T: Sink<Item> + ?Sized,
pub fn with<U, Fut, F, E>(self, f: F) -> With<Self, Item, U, Fut, F> where
E: From<Self::Error>,
F: FnMut(U) -> Fut,
Fut: Future<Output = Result<Item, E>>,
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E: From<Self::Error>,
F: FnMut(U) -> Fut,
Fut: Future<Output = Result<Item, E>>,
Composes a function in front of the sink. Read more
pub fn with_flat_map<U, St, F>(self, f: F) -> WithFlatMap<Self, Item, U, St, F> where
F: FnMut(U) -> St,
St: Stream<Item = Result<Item, Self::Error>>,
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F: FnMut(U) -> St,
St: Stream<Item = Result<Item, Self::Error>>,
Composes a function in front of the sink. Read more
pub fn sink_map_err<E, F>(self, f: F) -> SinkMapErr<Self, F> where
F: FnOnce(Self::Error) -> E,
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F: FnOnce(Self::Error) -> E,
Transforms the error returned by the sink.
pub fn sink_err_into<E>(self) -> SinkErrInto<Self, Item, E> where
Self::Error: Into<E>,
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Self::Error: Into<E>,
Map this sink’s error to a different error type using the Into
trait. Read more
pub fn buffer(self, capacity: usize) -> Buffer<Self, Item>
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Adds a fixed-size buffer to the current sink. Read more
pub fn close(&mut self) -> Close<'_, Self, Item>ⓘ where
Self: Unpin,
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Self: Unpin,
Close the sink.
pub fn fanout<Si>(self, other: Si) -> Fanout<Self, Si> where
Item: Clone,
Si: Sink<Item, Error = Self::Error>,
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Item: Clone,
Si: Sink<Item, Error = Self::Error>,
Fanout items to multiple sinks. Read more
pub fn flush(&mut self) -> Flush<'_, Self, Item>ⓘ where
Self: Unpin,
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Self: Unpin,
Flush the sink, processing all pending items. Read more
pub fn send(&mut self, item: Item) -> Send<'_, Self, Item>ⓘ where
Self: Unpin,
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Self: Unpin,
A future that completes after the given item has been fully processed into the sink, including flushing. Read more
pub fn feed(&mut self, item: Item) -> Feed<'_, Self, Item>ⓘ where
Self: Unpin,
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Self: Unpin,
A future that completes after the given item has been received by the sink. Read more
pub fn send_all<St>(&'a mut self, stream: &'a mut St) -> SendAll<'a, Self, St>ⓘ where
Self: Unpin,
St: TryStream<Ok = Item, Error = Self::Error> + Stream + Unpin + ?Sized,
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Self: Unpin,
St: TryStream<Ok = Item, Error = Self::Error> + Stream + Unpin + ?Sized,
A future that completes after the given stream has been fully processed into the sink, including flushing. Read more
pub fn left_sink<Si2>(self) -> Either<Self, Si2>ⓘ where
Si2: Sink<Item, Error = Self::Error>,
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Si2: Sink<Item, Error = Self::Error>,
Wrap this sink in an Either
sink, making it the left-hand variant
of that Either
. Read more
pub fn right_sink<Si1>(self) -> Either<Si1, Self>ⓘ where
Si1: Sink<Item, Error = Self::Error>,
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Si1: Sink<Item, Error = Self::Error>,
Wrap this stream in an Either
stream, making it the right-hand variant
of that Either
. Read more
pub fn poll_ready_unpin(
&mut self,
cx: &mut Context<'_>
) -> Poll<Result<(), Self::Error>> where
Self: Unpin,
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&mut self,
cx: &mut Context<'_>
) -> Poll<Result<(), Self::Error>> where
Self: Unpin,
A convenience method for calling Sink::poll_ready
on Unpin
sink types. Read more
pub fn start_send_unpin(&mut self, item: Item) -> Result<(), Self::Error> where
Self: Unpin,
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Self: Unpin,
A convenience method for calling Sink::start_send
on Unpin
sink types. Read more
pub fn poll_flush_unpin(
&mut self,
cx: &mut Context<'_>
) -> Poll<Result<(), Self::Error>> where
Self: Unpin,
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&mut self,
cx: &mut Context<'_>
) -> Poll<Result<(), Self::Error>> where
Self: Unpin,
A convenience method for calling Sink::poll_flush
on Unpin
sink types. Read more
pub fn poll_close_unpin(
&mut self,
cx: &mut Context<'_>
) -> Poll<Result<(), Self::Error>> where
Self: Unpin,
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&mut self,
cx: &mut Context<'_>
) -> Poll<Result<(), Self::Error>> where
Self: Unpin,
A convenience method for calling Sink::poll_close
on Unpin
sink types. Read more
impl<T> StreamExt for T where
T: Stream + ?Sized,
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T: Stream + ?Sized,
pub fn next(&mut self) -> Next<'_, Self>ⓘ where
Self: Unpin,
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Self: Unpin,
Creates a future that resolves to the next item in the stream. Read more
pub fn into_future(self) -> StreamFuture<Self>ⓘ where
Self: Unpin,
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Self: Unpin,
Converts this stream into a future of (next_item, tail_of_stream)
.
If the stream terminates, then the next item is None
. Read more
pub fn map<T, F>(self, f: F) -> Map<Self, F> where
F: FnMut(Self::Item) -> T,
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F: FnMut(Self::Item) -> T,
Maps this stream’s items to a different type, returning a new stream of the resulting type. Read more
pub fn enumerate(self) -> Enumerate<Self>
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Creates a stream which gives the current iteration count as well as the next value. Read more
pub 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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F: FnMut(&Self::Item) -> Fut,
Fut: Future<Output = bool>,
Filters the values produced by this stream according to the provided asynchronous predicate. Read more
pub 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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F: FnMut(Self::Item) -> Fut,
Fut: Future<Output = Option<T>>,
Filters the values produced by this stream while simultaneously mapping them to a different type according to the provided asynchronous closure. Read more
pub fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where
F: FnMut(Self::Item) -> Fut,
Fut: Future,
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F: FnMut(Self::Item) -> Fut,
Fut: Future,
Computes from this stream’s items new items of a different type using an asynchronous closure. Read more
pub fn collect<C>(self) -> Collect<Self, C>ⓘ where
C: Default + Extend<Self::Item>,
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C: Default + Extend<Self::Item>,
Transforms a stream into a collection, returning a future representing the result of that computation. Read more
pub 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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Self: Stream<Item = (A, B)>,
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
Converts a stream of pairs into a future, which resolves to pair of containers. Read more
pub fn concat(self) -> Concat<Self>ⓘ where
Self::Item: Extend<<Self::Item as IntoIterator>::Item>,
Self::Item: IntoIterator,
Self::Item: Default,
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Self::Item: Extend<<Self::Item as IntoIterator>::Item>,
Self::Item: IntoIterator,
Self::Item: Default,
Concatenate all items of a stream into a single extendable destination, returning a future representing the end result. Read more
pub fn cycle(self) -> Cycle<Self> where
Self: Clone,
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Self: Clone,
Repeats a stream endlessly. Read more
pub 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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F: FnMut(T, Self::Item) -> Fut,
Fut: Future<Output = T>,
Execute an accumulating asynchronous computation over a stream, collecting all the values into one final result. Read more
pub fn flatten(self) -> Flatten<Self> where
Self::Item: Stream,
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Self::Item: Stream,
Flattens a stream of streams into just one continuous stream. Read more
pub fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F> where
F: FnMut(Self::Item) -> U,
U: Stream,
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F: FnMut(Self::Item) -> U,
U: Stream,
Maps a stream like StreamExt::map
but flattens nested Stream
s. Read more
pub 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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F: FnMut(&mut S, Self::Item) -> Fut,
Fut: Future<Output = Option<B>>,
Combinator similar to StreamExt::fold
that holds internal state
and produces a new stream. Read more
pub 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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F: FnMut(&Self::Item) -> Fut,
Fut: Future<Output = bool>,
Skip elements on this stream while the provided asynchronous predicate
resolves to true
. Read more
pub 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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F: FnMut(&Self::Item) -> Fut,
Fut: Future<Output = bool>,
Take elements from this stream while the provided asynchronous predicate
resolves to true
. Read more
pub fn take_until<Fut>(self, fut: Fut) -> TakeUntil<Self, Fut> where
Fut: Future,
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Fut: Future,
Take elements from this stream until the provided future resolves. Read more
pub 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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F: FnMut(Self::Item) -> Fut,
Fut: Future<Output = ()>,
Runs this stream to completion, executing the provided asynchronous closure for each element on the stream. Read more
pub 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 = ()>,
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self,
limit: impl Into<Option<usize>>,
f: F
) -> ForEachConcurrent<Self, Fut, F>ⓘ where
F: FnMut(Self::Item) -> Fut,
Fut: Future<Output = ()>,
Runs this stream to completion, executing the provided asynchronous closure for each element on the stream concurrently as elements become available. Read more
pub fn take(self, n: usize) -> Take<Self>
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Creates a new stream of at most n
items of the underlying stream. Read more
pub fn skip(self, n: usize) -> Skip<Self>
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Creates a new stream which skips n
items of the underlying stream. Read more
pub fn fuse(self) -> Fuse<Self>
[src][−]
Fuse a stream such that poll_next
will never
again be called once it has finished. This method can be used to turn
any Stream
into a FusedStream
. Read more
pub fn by_ref(&mut self) -> &mut Selfⓘ
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Borrows a stream, rather than consuming it. Read more
pub fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe,
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Self: UnwindSafe,
Catches unwinding panics while polling the stream. Read more
pub fn boxed<'a>(
self
) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a + Send, Global>>ⓘ where
Self: Send + 'a,
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self
) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a + Send, Global>>ⓘ where
Self: Send + 'a,
Wrap the stream in a Box, pinning it. Read more
pub fn boxed_local<'a>(
self
) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a, Global>>ⓘ where
Self: 'a,
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self
) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a, Global>>ⓘ where
Self: 'a,
Wrap the stream in a Box, pinning it. Read more
pub fn buffered(self, n: usize) -> Buffered<Self> where
Self::Item: Future,
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Self::Item: Future,
An adaptor for creating a buffered list of pending futures. Read more
pub fn buffer_unordered(self, n: usize) -> BufferUnordered<Self> where
Self::Item: Future,
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Self::Item: Future,
An adaptor for creating a buffered list of pending futures (unordered). Read more
pub fn zip<St>(self, other: St) -> Zip<Self, St> where
St: Stream,
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St: Stream,
An adapter for zipping two streams together. Read more
pub fn chain<St>(self, other: St) -> Chain<Self, St> where
St: Stream<Item = Self::Item>,
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St: Stream<Item = Self::Item>,
Adapter for chaining two streams. Read more
pub fn peekable(self) -> Peekable<Self>
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Creates a new stream which exposes a peek
method. Read more
pub fn chunks(self, capacity: usize) -> Chunks<Self>
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An adaptor for chunking up items of the stream inside a vector. Read more
pub fn ready_chunks(self, capacity: usize) -> ReadyChunks<Self>
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An adaptor for chunking up ready items of the stream inside a vector. Read more
pub fn forward<S>(self, sink: S) -> Forward<Self, S>ⓘ where
Self: TryStream,
S: Sink<Self::Ok, Error = Self::Error>,
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Self: TryStream,
S: Sink<Self::Ok, Error = Self::Error>,
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
pub fn split<Item>(self) -> (SplitSink<Self, Item>, SplitStream<Self>) where
Self: Sink<Item>,
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Self: Sink<Item>,
Splits this Stream + Sink
object into separate Sink
and Stream
objects. Read more
pub fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnMut(&Self::Item),
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F: FnMut(&Self::Item),
Do something with each item of this stream, afterwards passing it on. Read more
pub fn left_stream<B>(self) -> Either<Self, B>ⓘ where
B: Stream<Item = Self::Item>,
[src][−]
B: Stream<Item = Self::Item>,
Wrap this stream in an Either
stream, making it the left-hand variant
of that Either
. Read more
pub fn right_stream<B>(self) -> Either<B, Self>ⓘ where
B: Stream<Item = Self::Item>,
[src][−]
B: Stream<Item = Self::Item>,
Wrap this stream in an Either
stream, making it the right-hand variant
of that Either
. Read more
pub fn poll_next_unpin(
&mut self,
cx: &mut Context<'_>
) -> Poll<Option<Self::Item>> where
Self: Unpin,
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&mut self,
cx: &mut Context<'_>
) -> Poll<Option<Self::Item>> where
Self: Unpin,
A convenience method for calling Stream::poll_next
on Unpin
stream types. Read more
pub fn select_next_some(&mut self) -> SelectNextSome<'_, Self>ⓘNotable traits for SelectNextSome<'_, St>
impl<'_, St> Future for SelectNextSome<'_, St> where
St: Unpin + FusedStream + ?Sized, type Output = <St as Stream>::Item;
where
Self: Unpin + FusedStream,
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Notable traits for SelectNextSome<'_, St>
impl<'_, St> Future for SelectNextSome<'_, St> where
St: Unpin + FusedStream + ?Sized, type Output = <St as Stream>::Item;
Self: Unpin + FusedStream,
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.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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Performs the conversion.
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.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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Performs the conversion.
impl<S, T, E> TryStream for S where
S: Stream<Item = Result<T, E>> + ?Sized,
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S: Stream<Item = Result<T, E>> + ?Sized,
type Ok = T
The type of successful values yielded by this future
type Error = E
The type of failures yielded by this future
pub fn try_poll_next(
self: Pin<&mut S>,
cx: &mut Context<'_>
) -> Poll<Option<Result<<S as TryStream>::Ok, <S as TryStream>::Error>>>
[src][−]
self: Pin<&mut S>,
cx: &mut Context<'_>
) -> Poll<Option<Result<<S as TryStream>::Ok, <S as TryStream>::Error>>>
Poll this TryStream
as if it were a Stream
. Read more
impl<S> TryStreamExt for S where
S: TryStream + ?Sized,
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S: TryStream + ?Sized,
pub fn err_into<E>(self) -> ErrInto<Self, E> where
Self::Error: Into<E>,
[src][−]
Self::Error: Into<E>,
Wraps the current stream in a new stream which converts the error type into the one provided. Read more
pub fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where
F: FnMut(Self::Ok) -> T,
[src][−]
F: FnMut(Self::Ok) -> T,
Wraps the current stream in a new stream which maps the success value using the provided closure. Read more
pub fn map_err<E, F>(self, f: F) -> MapErr<Self, F> where
F: FnMut(Self::Error) -> E,
[src][−]
F: FnMut(Self::Error) -> E,
Wraps the current stream in a new stream which maps the error value using the provided closure. Read more
pub fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where
F: FnMut(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,
[src][−]
F: FnMut(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,
Chain on a computation for when a value is ready, passing the successful
results to the provided closure f
. Read more
pub fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> where
F: FnMut(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,
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F: FnMut(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,
Chain on a computation for when an error happens, passing the
erroneous result to the provided closure f
. Read more
pub fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> where
F: FnMut(&Self::Ok),
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F: FnMut(&Self::Ok),
Do something with the success value of this stream, afterwards passing it on. Read more
pub fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where
F: FnMut(&Self::Error),
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F: FnMut(&Self::Error),
Do something with the error value of this stream, afterwards passing it on. Read more
pub fn into_stream(self) -> IntoStream<Self>
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pub fn try_next(&mut self) -> TryNext<'_, Self>ⓘ where
Self: Unpin,
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Self: Unpin,
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
pub 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>,
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F: FnMut(Self::Ok) -> Fut,
Fut: TryFuture<Ok = (), Error = Self::Error>,
Attempts to run this stream to completion, executing the provided asynchronous closure for each element on the stream. Read more
pub 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>,
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F: FnMut(&Self::Ok) -> Fut,
Fut: TryFuture<Ok = bool, Error = Self::Error>,
Skip elements on this stream while the provided asynchronous predicate
resolves to true
. Read more
pub 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>,
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F: FnMut(&Self::Ok) -> Fut,
Fut: TryFuture<Ok = bool, Error = Self::Error>,
Take elements on this stream while the provided asynchronous predicate
resolves to true
. Read more
pub 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>>,
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self,
limit: impl Into<Option<usize>>,
f: F
) -> TryForEachConcurrent<Self, Fut, F>ⓘ where
F: FnMut(Self::Ok) -> Fut,
Fut: Future<Output = Result<(), Self::Error>>,
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
pub fn try_collect<C>(self) -> TryCollect<Self, C>ⓘ where
C: Default + Extend<Self::Ok>,
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C: Default + Extend<Self::Ok>,
Attempt to transform a stream into a collection, returning a future representing the result of that computation. Read more
pub fn try_filter<Fut, F>(self, f: F) -> TryFilter<Self, Fut, F> where
F: FnMut(&Self::Ok) -> Fut,
Fut: Future<Output = bool>,
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F: FnMut(&Self::Ok) -> Fut,
Fut: Future<Output = bool>,
Attempt to filter the values produced by this stream according to the provided asynchronous closure. Read more
pub 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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F: FnMut(Self::Ok) -> Fut,
Fut: TryFuture<Ok = Option<T>, Error = Self::Error>,
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
pub fn try_flatten(self) -> TryFlatten<Self> where
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error: From<Self::Error>,
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Self::Ok: TryStream,
<Self::Ok as TryStream>::Error: From<Self::Error>,
Flattens a stream of streams into just one continuous stream. Read more
pub 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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F: FnMut(T, Self::Ok) -> Fut,
Fut: TryFuture<Ok = T, Error = Self::Error>,
Attempt to execute an accumulating asynchronous computation over a stream, collecting all the values into one final result. Read more
pub 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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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>;
Self::Ok: Extend<<Self::Ok as IntoIterator>::Item>,
Self::Ok: IntoIterator,
Self::Ok: Default,
Attempt to concatenate all items of a stream into a single extendable destination, returning a future representing the end result. Read more
pub fn try_buffer_unordered(self, n: usize) -> TryBufferUnordered<Self> where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,
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Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,
Attempt to execute several futures from a stream concurrently (unordered). Read more
pub fn try_buffered(self, n: usize) -> TryBuffered<Self> where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,
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Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,
Attempt to execute several futures from a stream concurrently. Read more
pub fn try_poll_next_unpin(
&mut self,
cx: &mut Context<'_>
) -> Poll<Option<Result<Self::Ok, Self::Error>>> where
Self: Unpin,
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&mut self,
cx: &mut Context<'_>
) -> Poll<Option<Result<Self::Ok, Self::Error>>> where
Self: Unpin,
A convenience method for calling TryStream::try_poll_next
on Unpin
stream types. Read more
pub fn into_async_read(self) -> IntoAsyncRead<Self> where
Self: TryStreamExt<Error = Error> + Unpin,
Self::Ok: AsRef<[u8]>,
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Self: TryStreamExt<Error = Error> + Unpin,
Self::Ok: AsRef<[u8]>,