Struct futures::prelude::future::FlattenStream
source · pub struct FlattenStream<F>where
F: Future,{ /* private fields */ }Expand description
Stream for the flatten_stream method.
Trait Implementations§
source§impl<F> FusedStream for FlattenStream<F>where
Flatten<F, <F as Future>::Output>: FusedStream,
F: Future,
impl<F> FusedStream for FlattenStream<F>where Flatten<F, <F as Future>::Output>: FusedStream, F: Future,
source§fn is_terminated(&self) -> bool
fn is_terminated(&self) -> bool
Returns
true if the stream should no longer be polled.source§impl<_Item, F> Sink<_Item> for FlattenStream<F>where
Flatten<F, <F as Future>::Output>: Sink<_Item>,
F: Future,
impl<_Item, F> Sink<_Item> for FlattenStream<F>where Flatten<F, <F as Future>::Output>: Sink<_Item>, F: Future,
§type Error = <Flatten<F, <F as Future>::Output> as Sink<_Item>>::Error
type Error = <Flatten<F, <F as Future>::Output> as Sink<_Item>>::Error
The type of value produced by the sink when an error occurs.
source§fn poll_ready(
self: Pin<&mut FlattenStream<F>>,
cx: &mut Context<'_>
) -> Poll<Result<(), <FlattenStream<F> as Sink<_Item>>::Error>>
fn poll_ready( self: Pin<&mut FlattenStream<F>>, cx: &mut Context<'_> ) -> Poll<Result<(), <FlattenStream<F> as Sink<_Item>>::Error>>
Attempts to prepare the
Sink to receive a value. Read moresource§fn start_send(
self: Pin<&mut FlattenStream<F>>,
item: _Item
) -> Result<(), <FlattenStream<F> as Sink<_Item>>::Error>
fn start_send( self: Pin<&mut FlattenStream<F>>, item: _Item ) -> Result<(), <FlattenStream<F> 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 moresource§fn poll_flush(
self: Pin<&mut FlattenStream<F>>,
cx: &mut Context<'_>
) -> Poll<Result<(), <FlattenStream<F> as Sink<_Item>>::Error>>
fn poll_flush( self: Pin<&mut FlattenStream<F>>, cx: &mut Context<'_> ) -> Poll<Result<(), <FlattenStream<F> as Sink<_Item>>::Error>>
Flush any remaining output from this sink. Read more
source§fn poll_close(
self: Pin<&mut FlattenStream<F>>,
cx: &mut Context<'_>
) -> Poll<Result<(), <FlattenStream<F> as Sink<_Item>>::Error>>
fn poll_close( self: Pin<&mut FlattenStream<F>>, cx: &mut Context<'_> ) -> Poll<Result<(), <FlattenStream<F> as Sink<_Item>>::Error>>
Flush any remaining output and close this sink, if necessary. Read more
source§impl<F> Stream for FlattenStream<F>where
Flatten<F, <F as Future>::Output>: Stream,
F: Future,
impl<F> Stream for FlattenStream<F>where Flatten<F, <F as Future>::Output>: Stream, F: Future,
source§fn poll_next(
self: Pin<&mut FlattenStream<F>>,
cx: &mut Context<'_>
) -> Poll<Option<<FlattenStream<F> as Stream>::Item>>
fn poll_next( self: Pin<&mut FlattenStream<F>>, cx: &mut Context<'_> ) -> Poll<Option<<FlattenStream<F> 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 moreimpl<'__pin, F> Unpin for FlattenStream<F>where __Origin<'__pin, F>: Unpin, F: Future,
Auto Trait Implementations§
impl<F> RefUnwindSafe for FlattenStream<F>where F: RefUnwindSafe, <F as Future>::Output: RefUnwindSafe,
impl<F> Send for FlattenStream<F>where F: Send, <F as Future>::Output: Send,
impl<F> Sync for FlattenStream<F>where F: Sync, <F as Future>::Output: Sync,
impl<F> UnwindSafe for FlattenStream<F>where F: UnwindSafe, <F as Future>::Output: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T, Item> SinkExt<Item> for Twhere
T: Sink<Item> + ?Sized,
impl<T, Item> SinkExt<Item> for Twhere T: Sink<Item> + ?Sized,
source§fn with<U, Fut, F, E>(self, f: F) -> With<Self, Item, U, Fut, F>where
F: FnMut(U) -> Fut,
Fut: Future<Output = Result<Item, E>>,
E: From<Self::Error>,
Self: Sized,
fn with<U, Fut, F, E>(self, f: F) -> With<Self, Item, U, Fut, F>where F: FnMut(U) -> Fut, Fut: Future<Output = Result<Item, E>>, E: From<Self::Error>, Self: Sized,
Composes a function in front of the sink. Read more
source§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>>,
Self: Sized,
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>>, Self: Sized,
Composes a function in front of the sink. Read more
source§fn sink_map_err<E, F>(self, f: F) -> SinkMapErr<Self, F>where
F: FnOnce(Self::Error) -> E,
Self: Sized,
fn sink_map_err<E, F>(self, f: F) -> SinkMapErr<Self, F>where F: FnOnce(Self::Error) -> E, Self: Sized,
Transforms the error returned by the sink.
source§fn sink_err_into<E>(self) -> SinkErrInto<Self, Item, E>where
Self: Sized,
Self::Error: Into<E>,
fn sink_err_into<E>(self) -> SinkErrInto<Self, Item, E>where Self: Sized, Self::Error: Into<E>,
Map this sink’s error to a different error type using the
Into trait. Read moresource§fn buffer(self, capacity: usize) -> Buffer<Self, Item>where
Self: Sized,
fn buffer(self, capacity: usize) -> Buffer<Self, Item>where Self: Sized,
Adds a fixed-size buffer to the current sink. Read more
source§fn fanout<Si>(self, other: Si) -> Fanout<Self, Si>where
Self: Sized,
Item: Clone,
Si: Sink<Item, Error = Self::Error>,
fn fanout<Si>(self, other: Si) -> Fanout<Self, Si>where Self: Sized, Item: Clone, Si: Sink<Item, Error = Self::Error>,
Fanout items to multiple sinks. Read more
source§fn flush(&mut self) -> Flush<'_, Self, Item> ⓘwhere
Self: Unpin,
fn flush(&mut self) -> Flush<'_, Self, Item> ⓘwhere Self: Unpin,
Flush the sink, processing all pending items. Read more
source§fn send(&mut self, item: Item) -> Send<'_, Self, Item> ⓘwhere
Self: Unpin,
fn send(&mut self, item: Item) -> Send<'_, Self, Item> ⓘwhere Self: Unpin,
A future that completes after the given item has been fully processed
into the sink, including flushing. Read more
source§fn feed(&mut self, item: Item) -> Feed<'_, Self, Item> ⓘwhere
Self: Unpin,
fn feed(&mut self, item: Item) -> Feed<'_, Self, Item> ⓘwhere Self: Unpin,
A future that completes after the given item has been received
by the sink. Read more
source§fn send_all<St, 'a>(&'a mut self, stream: &'a mut St) -> SendAll<'a, Self, St> ⓘwhere
St: TryStream<Ok = Item, Error = Self::Error> + Stream + Unpin + ?Sized,
Self: Unpin,
fn send_all<St, 'a>(&'a mut self, stream: &'a mut St) -> SendAll<'a, Self, St> ⓘwhere St: TryStream<Ok = Item, Error = Self::Error> + Stream + Unpin + ?Sized, Self: Unpin,
A future that completes after the given stream has been fully processed
into the sink, including flushing. Read more
source§fn left_sink<Si2>(self) -> Either<Self, Si2> ⓘwhere
Si2: Sink<Item, Error = Self::Error>,
Self: Sized,
fn left_sink<Si2>(self) -> Either<Self, Si2> ⓘwhere Si2: Sink<Item, Error = Self::Error>, Self: Sized,
source§fn right_sink<Si1>(self) -> Either<Si1, Self> ⓘwhere
Si1: Sink<Item, Error = Self::Error>,
Self: Sized,
fn right_sink<Si1>(self) -> Either<Si1, Self> ⓘwhere Si1: Sink<Item, Error = Self::Error>, Self: Sized,
source§fn poll_ready_unpin(
&mut self,
cx: &mut Context<'_>
) -> Poll<Result<(), Self::Error>>where
Self: Unpin,
fn poll_ready_unpin( &mut self, cx: &mut Context<'_> ) -> Poll<Result<(), Self::Error>>where Self: Unpin,
A convenience method for calling
Sink::poll_ready on Unpin
sink types.source§fn start_send_unpin(&mut self, item: Item) -> Result<(), Self::Error>where
Self: Unpin,
fn start_send_unpin(&mut self, item: Item) -> Result<(), Self::Error>where Self: Unpin,
A convenience method for calling
Sink::start_send on Unpin
sink types.source§impl<T> StreamExt for Twhere
T: Stream + ?Sized,
impl<T> StreamExt for Twhere T: Stream + ?Sized,
source§fn next(&mut self) -> Next<'_, Self> ⓘwhere
Self: Unpin,
fn next(&mut self) -> Next<'_, Self> ⓘwhere Self: Unpin,
Creates a future that resolves to the next item in the stream. Read more
source§fn into_future(self) -> StreamFuture<Self> ⓘwhere
Self: Sized + Unpin,
fn into_future(self) -> StreamFuture<Self> ⓘwhere Self: Sized + Unpin,
source§fn map<T, F>(self, f: F) -> Map<Self, F>where
F: FnMut(Self::Item) -> T,
Self: Sized,
fn map<T, F>(self, f: F) -> Map<Self, F>where F: FnMut(Self::Item) -> T, Self: Sized,
Maps this stream’s items to a different type, returning a new stream of
the resulting type. Read more
source§fn enumerate(self) -> Enumerate<Self>where
Self: Sized,
fn enumerate(self) -> Enumerate<Self>where Self: Sized,
Creates a stream which gives the current iteration count as well as
the next value. Read more
source§fn filter<Fut, F>(self, f: F) -> Filter<Self, Fut, F>where
F: FnMut(&Self::Item) -> Fut,
Fut: Future<Output = bool>,
Self: Sized,
fn filter<Fut, F>(self, f: F) -> Filter<Self, Fut, F>where F: FnMut(&Self::Item) -> Fut, Fut: Future<Output = bool>, Self: Sized,
Filters the values produced by this stream according to the provided
asynchronous predicate. Read more
source§fn filter_map<Fut, T, F>(self, f: F) -> FilterMap<Self, Fut, F>where
F: FnMut(Self::Item) -> Fut,
Fut: Future<Output = Option<T>>,
Self: Sized,
fn filter_map<Fut, T, F>(self, f: F) -> FilterMap<Self, Fut, F>where F: FnMut(Self::Item) -> Fut, Fut: Future<Output = Option<T>>, Self: Sized,
Filters the values produced by this stream while simultaneously mapping
them to a different type according to the provided asynchronous closure. Read more
source§fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F>where
F: FnMut(Self::Item) -> Fut,
Fut: Future,
Self: Sized,
fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F>where F: FnMut(Self::Item) -> Fut, Fut: Future, Self: Sized,
Computes from this stream’s items new items of a different type using
an asynchronous closure. Read more
source§fn collect<C>(self) -> Collect<Self, C> ⓘwhere
C: Default + Extend<Self::Item>,
Self: Sized,
fn collect<C>(self) -> Collect<Self, C> ⓘwhere C: Default + Extend<Self::Item>, Self: Sized,
Transforms a stream into a collection, returning a
future representing the result of that computation. Read more
source§fn unzip<A, B, FromA, FromB>(self) -> Unzip<Self, FromA, FromB> ⓘwhere
FromA: Default + Extend<A>,
FromB: Default + Extend<B>,
Self: Sized + Stream<Item = (A, B)>,
fn unzip<A, B, FromA, FromB>(self) -> Unzip<Self, FromA, FromB> ⓘwhere FromA: Default + Extend<A>, FromB: Default + Extend<B>, Self: Sized + Stream<Item = (A, B)>,
Converts a stream of pairs into a future, which
resolves to pair of containers. Read more
source§fn concat(self) -> Concat<Self> ⓘwhere
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 + Default,
Concatenate all items of a stream into a single extendable
destination, returning a future representing the end result. Read more
source§fn count(self) -> Count<Self> ⓘwhere
Self: Sized,
fn count(self) -> Count<Self> ⓘwhere Self: Sized,
Drives the stream to completion, counting the number of items. Read more
source§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>,
Self: Sized,
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>, Self: Sized,
Execute an accumulating asynchronous computation over a stream,
collecting all the values into one final result. Read more
source§fn any<Fut, F>(self, f: F) -> Any<Self, Fut, F> ⓘwhere
F: FnMut(Self::Item) -> Fut,
Fut: Future<Output = bool>,
Self: Sized,
fn any<Fut, F>(self, f: F) -> Any<Self, Fut, F> ⓘwhere F: FnMut(Self::Item) -> Fut, Fut: Future<Output = bool>, Self: Sized,
Execute predicate over asynchronous stream, and return
true if any element in stream satisfied a predicate. Read moresource§fn all<Fut, F>(self, f: F) -> All<Self, Fut, F> ⓘwhere
F: FnMut(Self::Item) -> Fut,
Fut: Future<Output = bool>,
Self: Sized,
fn all<Fut, F>(self, f: F) -> All<Self, Fut, F> ⓘwhere F: FnMut(Self::Item) -> Fut, Fut: Future<Output = bool>, Self: Sized,
Execute predicate over asynchronous stream, and return
true if all element in stream satisfied a predicate. Read moresource§fn flatten(self) -> Flatten<Self>where
Self::Item: Stream,
Self: Sized,
fn flatten(self) -> Flatten<Self>where Self::Item: Stream, Self: Sized,
Flattens a stream of streams into just one continuous stream. Read more
source§fn flatten_unordered(
self,
limit: impl Into<Option<usize>>
) -> FlattenUnorderedWithFlowController<Self, ()>where
Self::Item: Stream + Unpin,
Self: Sized,
fn flatten_unordered( self, limit: impl Into<Option<usize>> ) -> FlattenUnorderedWithFlowController<Self, ()>where Self::Item: Stream + Unpin, Self: Sized,
Flattens a stream of streams into just one continuous stream. Polls
inner streams produced by the base stream concurrently. Read more
source§fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>where
F: FnMut(Self::Item) -> U,
U: Stream,
Self: Sized,
fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>where F: FnMut(Self::Item) -> U, U: Stream, Self: Sized,
source§fn flat_map_unordered<U, F>(
self,
limit: impl Into<Option<usize>>,
f: F
) -> FlatMapUnordered<Self, U, F>where
U: Stream + Unpin,
F: FnMut(Self::Item) -> U,
Self: Sized,
fn flat_map_unordered<U, F>( self, limit: impl Into<Option<usize>>, f: F ) -> FlatMapUnordered<Self, U, F>where U: Stream + Unpin, F: FnMut(Self::Item) -> U, Self: Sized,
Maps a stream like
StreamExt::map but flattens nested Streams
and polls them concurrently, yielding items in any order, as they made
available. Read moresource§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>>,
Self: Sized,
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>>, Self: Sized,
Combinator similar to
StreamExt::fold that holds internal state
and produces a new stream. Read moresource§fn skip_while<Fut, F>(self, f: F) -> SkipWhile<Self, Fut, F>where
F: FnMut(&Self::Item) -> Fut,
Fut: Future<Output = bool>,
Self: Sized,
fn skip_while<Fut, F>(self, f: F) -> SkipWhile<Self, Fut, F>where F: FnMut(&Self::Item) -> Fut, Fut: Future<Output = bool>, Self: Sized,
Skip elements on this stream while the provided asynchronous predicate
resolves to
true. Read moresource§fn take_while<Fut, F>(self, f: F) -> TakeWhile<Self, Fut, F>where
F: FnMut(&Self::Item) -> Fut,
Fut: Future<Output = bool>,
Self: Sized,
fn take_while<Fut, F>(self, f: F) -> TakeWhile<Self, Fut, F>where F: FnMut(&Self::Item) -> Fut, Fut: Future<Output = bool>, Self: Sized,
Take elements from this stream while the provided asynchronous predicate
resolves to
true. Read moresource§fn take_until<Fut>(self, fut: Fut) -> TakeUntil<Self, Fut>where
Fut: Future,
Self: Sized,
fn take_until<Fut>(self, fut: Fut) -> TakeUntil<Self, Fut>where Fut: Future, Self: Sized,
Take elements from this stream until the provided future resolves. Read more
source§fn for_each<Fut, F>(self, f: F) -> ForEach<Self, Fut, F> ⓘwhere
F: FnMut(Self::Item) -> Fut,
Fut: Future<Output = ()>,
Self: Sized,
fn for_each<Fut, F>(self, f: F) -> ForEach<Self, Fut, F> ⓘwhere F: FnMut(Self::Item) -> Fut, Fut: Future<Output = ()>, Self: Sized,
Runs this stream to completion, executing the provided asynchronous
closure for each element on the stream. Read more
source§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 = ()>,
Self: Sized,
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 = ()>, Self: Sized,
Runs this stream to completion, executing the provided asynchronous
closure for each element on the stream concurrently as elements become
available. Read more
source§fn take(self, n: usize) -> Take<Self>where
Self: Sized,
fn take(self, n: usize) -> Take<Self>where Self: Sized,
Creates a new stream of at most
n items of the underlying stream. Read moresource§fn skip(self, n: usize) -> Skip<Self>where
Self: Sized,
fn skip(self, n: usize) -> Skip<Self>where Self: Sized,
Creates a new stream which skips
n items of the underlying stream. Read moresource§fn catch_unwind(self) -> CatchUnwind<Self>where
Self: Sized + UnwindSafe,
fn catch_unwind(self) -> CatchUnwind<Self>where Self: Sized + UnwindSafe,
Catches unwinding panics while polling the stream. Read more
source§fn boxed<'a>(
self
) -> Pin<Box<dyn Stream<Item = Self::Item> + Send + 'a, Global>>where
Self: Sized + Send + 'a,
fn boxed<'a>( self ) -> Pin<Box<dyn Stream<Item = Self::Item> + Send + 'a, Global>>where Self: Sized + Send + 'a,
Wrap the stream in a Box, pinning it. Read more
source§fn boxed_local<'a>(self) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a, Global>>where
Self: Sized + 'a,
fn boxed_local<'a>(self) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a, Global>>where Self: Sized + 'a,
Wrap the stream in a Box, pinning it. Read more
source§fn buffered(self, n: usize) -> Buffered<Self>where
Self::Item: Future,
Self: Sized,
fn buffered(self, n: usize) -> Buffered<Self>where Self::Item: Future, Self: Sized,
An adaptor for creating a buffered list of pending futures. Read more
source§fn buffer_unordered(self, n: usize) -> BufferUnordered<Self>where
Self::Item: Future,
Self: Sized,
fn buffer_unordered(self, n: usize) -> BufferUnordered<Self>where Self::Item: Future, Self: Sized,
An adaptor for creating a buffered list of pending futures (unordered). Read more
source§fn zip<St>(self, other: St) -> Zip<Self, St>where
St: Stream,
Self: Sized,
fn zip<St>(self, other: St) -> Zip<Self, St>where St: Stream, Self: Sized,
An adapter for zipping two streams together. Read more
source§fn chain<St>(self, other: St) -> Chain<Self, St>where
St: Stream<Item = Self::Item>,
Self: Sized,
fn chain<St>(self, other: St) -> Chain<Self, St>where St: Stream<Item = Self::Item>, Self: Sized,
Adapter for chaining two streams. Read more
source§fn peekable(self) -> Peekable<Self>where
Self: Sized,
fn peekable(self) -> Peekable<Self>where Self: Sized,
Creates a new stream which exposes a
peek method. Read moresource§fn chunks(self, capacity: usize) -> Chunks<Self>where
Self: Sized,
fn chunks(self, capacity: usize) -> Chunks<Self>where Self: Sized,
An adaptor for chunking up items of the stream inside a vector. Read more
source§fn ready_chunks(self, capacity: usize) -> ReadyChunks<Self>where
Self: Sized,
fn ready_chunks(self, capacity: usize) -> ReadyChunks<Self>where Self: Sized,
An adaptor for chunking up ready items of the stream inside a vector. Read more
source§fn forward<S>(self, sink: S) -> Forward<Self, S> ⓘwhere
S: Sink<Self::Ok, Error = Self::Error>,
Self: TryStream + Sized,
fn forward<S>(self, sink: S) -> Forward<Self, S> ⓘwhere S: Sink<Self::Ok, Error = Self::Error>, Self: TryStream + Sized,
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
source§fn split<Item>(self) -> (SplitSink<Self, Item>, SplitStream<Self>)where
Self: Sink<Item> + Sized,
fn split<Item>(self) -> (SplitSink<Self, Item>, SplitStream<Self>)where Self: Sink<Item> + Sized,
source§fn inspect<F>(self, f: F) -> Inspect<Self, F>where
F: FnMut(&Self::Item),
Self: Sized,
fn inspect<F>(self, f: F) -> Inspect<Self, F>where F: FnMut(&Self::Item), Self: Sized,
Do something with each item of this stream, afterwards passing it on. Read more
source§fn right_stream<B>(self) -> Either<B, Self> ⓘwhere
B: Stream<Item = Self::Item>,
Self: Sized,
fn right_stream<B>(self) -> Either<B, Self> ⓘwhere B: Stream<Item = Self::Item>, Self: Sized,
source§fn poll_next_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Option<Self::Item>>where
Self: Unpin,
fn poll_next_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Option<Self::Item>>where Self: Unpin,
A convenience method for calling
Stream::poll_next on Unpin
stream types.source§fn select_next_some(&mut self) -> SelectNextSome<'_, Self> ⓘwhere
Self: Unpin + FusedStream,
fn select_next_some(&mut self) -> SelectNextSome<'_, Self> ⓘwhere Self: Unpin + FusedStream,
source§impl<S> TryStreamExt for Swhere
S: TryStream + ?Sized,
impl<S> TryStreamExt for Swhere S: TryStream + ?Sized,
source§fn err_into<E>(self) -> ErrInto<Self, E>where
Self: Sized,
Self::Error: Into<E>,
fn err_into<E>(self) -> ErrInto<Self, E>where Self: Sized, Self::Error: Into<E>,
Wraps the current stream in a new stream which converts the error type
into the one provided. Read more
source§fn map_ok<T, F>(self, f: F) -> MapOk<Self, F>where
Self: Sized,
F: FnMut(Self::Ok) -> T,
fn map_ok<T, F>(self, f: F) -> MapOk<Self, F>where Self: Sized, F: FnMut(Self::Ok) -> T,
Wraps the current stream in a new stream which maps the success value
using the provided closure. Read more
source§fn map_err<E, F>(self, f: F) -> MapErr<Self, F>where
Self: Sized,
F: FnMut(Self::Error) -> E,
fn map_err<E, F>(self, f: F) -> MapErr<Self, F>where Self: Sized, F: FnMut(Self::Error) -> E,
Wraps the current stream in a new stream which maps the error value
using the provided closure. Read more
source§fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F>where
F: FnMut(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,
Self: Sized,
fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F>where F: FnMut(Self::Ok) -> Fut, Fut: TryFuture<Error = Self::Error>, Self: Sized,
Chain on a computation for when a value is ready, passing the successful
results to the provided closure
f. Read moresource§fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F>where
F: FnMut(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,
Self: Sized,
fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F>where F: FnMut(Self::Error) -> Fut, Fut: TryFuture<Ok = Self::Ok>, Self: Sized,
Chain on a computation for when an error happens, passing the
erroneous result to the provided closure
f. Read moresource§fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F>where
F: FnMut(&Self::Ok),
Self: Sized,
fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F>where F: FnMut(&Self::Ok), Self: Sized,
Do something with the success value of this stream, afterwards passing
it on. Read more
source§fn inspect_err<F>(self, f: F) -> InspectErr<Self, F>where
F: FnMut(&Self::Error),
Self: Sized,
fn inspect_err<F>(self, f: F) -> InspectErr<Self, F>where F: FnMut(&Self::Error), Self: Sized,
Do something with the error value of this stream, afterwards passing it on. Read more
source§fn into_stream(self) -> IntoStream<Self>where
Self: Sized,
fn into_stream(self) -> IntoStream<Self>where Self: Sized,
source§fn try_next(&mut self) -> TryNext<'_, Self> ⓘwhere
Self: Unpin,
fn try_next(&mut self) -> TryNext<'_, Self> ⓘwhere 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
source§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>,
Self: Sized,
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>, Self: Sized,
Attempts to run this stream to completion, executing the provided
asynchronous closure for each element on the stream. Read more
source§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>,
Self: Sized,
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>, Self: Sized,
Skip elements on this stream while the provided asynchronous predicate
resolves to
true. Read moresource§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>,
Self: Sized,
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>, Self: Sized,
Take elements on this stream while the provided asynchronous predicate
resolves to
true. Read moresource§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>>,
Self: Sized,
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>>, Self: Sized,
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
source§fn try_collect<C>(self) -> TryCollect<Self, C> ⓘwhere
C: Default + Extend<Self::Ok>,
Self: Sized,
fn try_collect<C>(self) -> TryCollect<Self, C> ⓘwhere C: Default + Extend<Self::Ok>, Self: Sized,
Attempt to transform a stream into a collection,
returning a future representing the result of that computation. Read more
source§fn try_chunks(self, capacity: usize) -> TryChunks<Self>where
Self: Sized,
fn try_chunks(self, capacity: usize) -> TryChunks<Self>where Self: Sized,
An adaptor for chunking up successful items of the stream inside a vector. Read more
source§fn try_filter<Fut, F>(self, f: F) -> TryFilter<Self, Fut, F>where
Fut: Future<Output = bool>,
F: FnMut(&Self::Ok) -> Fut,
Self: Sized,
fn try_filter<Fut, F>(self, f: F) -> TryFilter<Self, Fut, F>where Fut: Future<Output = bool>, F: FnMut(&Self::Ok) -> Fut, Self: Sized,
Attempt to filter the values produced by this stream according to the
provided asynchronous closure. Read more
source§fn try_filter_map<Fut, F, T>(self, f: F) -> TryFilterMap<Self, Fut, F>where
Fut: TryFuture<Ok = Option<T>, Error = Self::Error>,
F: FnMut(Self::Ok) -> Fut,
Self: Sized,
fn try_filter_map<Fut, F, T>(self, f: F) -> TryFilterMap<Self, Fut, F>where Fut: TryFuture<Ok = Option<T>, Error = Self::Error>, F: FnMut(Self::Ok) -> Fut, Self: Sized,
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
source§fn try_flatten_unordered(
self,
limit: impl Into<Option<usize>>
) -> TryFlattenUnordered<Self>where
Self::Ok: TryStream + Unpin,
<Self::Ok as TryStream>::Error: From<Self::Error>,
Self: Sized,
fn try_flatten_unordered( self, limit: impl Into<Option<usize>> ) -> TryFlattenUnordered<Self>where Self::Ok: TryStream + Unpin, <Self::Ok as TryStream>::Error: From<Self::Error>, Self: Sized,
Flattens a stream of streams into just one continuous stream. Produced streams
will be polled concurrently and any errors will be passed through without looking at them.
If the underlying base stream returns an error, it will be immediately propagated. Read more
source§fn try_flatten(self) -> TryFlatten<Self>where
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error: From<Self::Error>,
Self: Sized,
fn try_flatten(self) -> TryFlatten<Self>where Self::Ok: TryStream, <Self::Ok as TryStream>::Error: From<Self::Error>, Self: Sized,
Flattens a stream of streams into just one continuous stream. Read more
source§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>,
Self: Sized,
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>, Self: Sized,
Attempt to execute an accumulating asynchronous computation over a
stream, collecting all the values into one final result. Read more
source§fn try_concat(self) -> TryConcat<Self> ⓘwhere
Self: Sized,
Self::Ok: Extend<<Self::Ok as IntoIterator>::Item> + IntoIterator + Default,
fn try_concat(self) -> TryConcat<Self> ⓘwhere Self: Sized, Self::Ok: Extend<<Self::Ok as IntoIterator>::Item> + IntoIterator + Default,
Attempt to concatenate all items of a stream into a single
extendable destination, returning a future representing the end result. Read more
source§fn try_buffer_unordered(self, n: usize) -> TryBufferUnordered<Self>where
Self::Ok: TryFuture<Error = Self::Error>,
Self: Sized,
fn try_buffer_unordered(self, n: usize) -> TryBufferUnordered<Self>where Self::Ok: TryFuture<Error = Self::Error>, Self: Sized,
Attempt to execute several futures from a stream concurrently (unordered). Read more
source§fn try_buffered(self, n: usize) -> TryBuffered<Self>where
Self::Ok: TryFuture<Error = Self::Error>,
Self: Sized,
fn try_buffered(self, n: usize) -> TryBuffered<Self>where Self::Ok: TryFuture<Error = Self::Error>, Self: Sized,
Attempt to execute several futures from a stream concurrently. Read more
source§fn try_poll_next_unpin(
&mut self,
cx: &mut Context<'_>
) -> Poll<Option<Result<Self::Ok, Self::Error>>>where
Self: Unpin,
fn try_poll_next_unpin( &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.source§fn into_async_read(self) -> IntoAsyncRead<Self>where
Self: Sized + TryStreamExt<Error = Error>,
Self::Ok: AsRef<[u8]>,
fn into_async_read(self) -> IntoAsyncRead<Self>where Self: Sized + TryStreamExt<Error = Error>, Self::Ok: AsRef<[u8]>,
Adapter that converts this stream into an
AsyncBufRead. Read more