Struct futures_util::sink::Drain
source · pub struct Drain<T> { /* private fields */ }Expand description
Sink for the drain function.
Trait Implementations§
source§impl<T> Sink<T> for Drain<T>
impl<T> Sink<T> for Drain<T>
§type Error = Infallible
type Error = Infallible
The type of value produced by the sink when an error occurs.
source§fn poll_ready(
self: Pin<&mut Self>,
_cx: &mut Context<'_>
) -> Poll<Result<(), Self::Error>>
fn poll_ready( self: Pin<&mut Self>, _cx: &mut Context<'_> ) -> Poll<Result<(), Self::Error>>
Attempts to prepare the
Sink to receive a value. Read moresource§fn start_send(self: Pin<&mut Self>, _item: T) -> Result<(), Self::Error>
fn start_send(self: Pin<&mut Self>, _item: T) -> Result<(), Self::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 moreimpl<T> Unpin for Drain<T>
Auto Trait Implementations§
impl<T> RefUnwindSafe for Drain<T>where T: RefUnwindSafe,
impl<T> Send for Drain<T>where T: Send,
impl<T> Sync for Drain<T>where T: Sync,
impl<T> UnwindSafe for Drain<T>where T: UnwindSafe,
Blanket Implementations§
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<'a, St>(&'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<'a, St>(&'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.