Struct futures::stream::PollImmediate
source · [−]pub struct PollImmediate<S> { /* private fields */ }
Expand description
Stream for the poll_immediate function.
It will never return Poll::Pending
Trait Implementations
Returns true
if the stream should no longer be polled.
pub fn poll_next(
self: Pin<&mut PollImmediate<S>>,
cx: &mut Context<'_>
) -> Poll<Option<<PollImmediate<S> as Stream>::Item>>
pub fn poll_next(
self: Pin<&mut PollImmediate<S>>,
cx: &mut Context<'_>
) -> Poll<Option<<PollImmediate<S> 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
Auto Trait Implementations
impl<S> RefUnwindSafe for PollImmediate<S> where
S: RefUnwindSafe,
impl<S> Send for PollImmediate<S> where
S: Send,
impl<S> Sync for PollImmediate<S> where
S: Sync,
impl<S> UnwindSafe for PollImmediate<S> where
S: UnwindSafe,
Blanket Implementations
Mutably borrows from an owned value. Read more
Creates a future that resolves to the next item in the stream. Read more
fn into_future(self) -> StreamFuture<Self>ⓘ where
Self: Unpin,
fn into_future(self) -> StreamFuture<Self>ⓘ where
Self: Unpin,
Maps this stream’s items to a different type, returning a new stream of the resulting type. Read more
Creates a stream which gives the current iteration count as well as the next value. Read more
Filters the values produced by this stream according to the provided asynchronous predicate. Read more
Filters the values produced by this stream while simultaneously mapping them to a different type according to the provided asynchronous closure. Read more
Computes from this stream’s items new items of a different type using an asynchronous closure. Read more
Transforms a stream into a collection, returning a future representing the result of that computation. Read more
Converts a stream of pairs into a future, which resolves to pair of containers. Read more
Concatenate all items of a stream into a single extendable destination, returning a future representing the end result. Read more
Drives the stream to completion, counting the number of items. Read more
Execute an accumulating asynchronous computation over a stream, collecting all the values into one final result. Read more
Execute predicate over asynchronous stream, and return true
if any element in stream satisfied a predicate. Read more
Execute predicate over asynchronous stream, and return true
if all element in stream satisfied a predicate. Read more
Flattens a stream of streams into just one continuous stream. Read more
Maps a stream like StreamExt::map
but flattens nested Stream
s. Read more
Combinator similar to StreamExt::fold
that holds internal state
and produces a new stream. Read more
Skip elements on this stream while the provided asynchronous predicate
resolves to true
. Read more
Take elements from this stream while the provided asynchronous predicate
resolves to true
. Read more
Take elements from this stream until the provided future resolves. Read more
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 = ()>,
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 = ()>,
Runs this stream to completion, executing the provided asynchronous closure for each element on the stream concurrently as elements become available. Read more
Creates a new stream of at most n
items of the underlying stream. Read more
Creates a new stream which skips n
items of the underlying stream. Read more
Catches unwinding panics while polling the stream. Read more
Wrap the stream in a Box, pinning it. Read more
Wrap the stream in a Box, pinning it. Read more
An adaptor for creating a buffered list of pending futures. Read more
An adaptor for creating a buffered list of pending futures (unordered). Read more
An adapter for zipping two streams together. Read more
Adapter for chaining two streams. Read more
Creates a new stream which exposes a peek
method. Read more
An adaptor for chunking up items of the stream inside a vector. Read more
An adaptor for chunking up ready items of the stream inside a vector. Read more
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
Splits this Stream + Sink
object into separate Sink
and Stream
objects. Read more
Do something with each item of this stream, afterwards passing it on. Read more
Wrap this stream in an Either
stream, making it the left-hand variant
of that Either
. Read more
Wrap this stream in an Either
stream, making it the right-hand variant
of that Either
. Read more
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,
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,
impl<'_, St> Future for SelectNextSome<'_, St> where
St: FusedStream + Unpin + ?Sized, type Output = <St as Stream>::Item;