Struct futures::future::FlattenSink

pub struct FlattenSink<F, S>(_);

Future for the flatten_sink combinator, flattening a future-of-a-sink to get just the result of the final sink as a sink.

This is created by the Future::flatten_sink method.

Trait Implementations

impl<F, S> Sink for FlattenSink<F, S> where     F: TryFuture<Ok = S>,     S: Sink<SinkError = <F as TryFuture>::Error>,

type SinkItem = <S as Sink>::SinkItem

The type of value that the sink accepts.

type SinkError = <S as Sink>::SinkError

The type of value produced by the sink when an error occurs.

fn poll_ready(     self: PinMut<FlattenSink<F, S>>,     cx: &mut Context ) -> Poll<Result<(), <FlattenSink<F, S> as Sink>::SinkError>>

Attempts to prepare the Sink to receive a value.

fn start_send(     self: PinMut<FlattenSink<F, S>>,     item: <FlattenSink<F, S> as Sink>::SinkItem ) -> Result<(), <FlattenSink<F, S> as Sink>::SinkError>

Begin the process of sending a value to the sink. Each call to this function must be proceeded by a successful call to poll_ready which returned Ok(Poll::Ready(())).

fn poll_flush(     self: PinMut<FlattenSink<F, S>>,     cx: &mut Context ) -> Poll<Result<(), <FlattenSink<F, S> as Sink>::SinkError>>

Flush any remaining output from this sink.

fn poll_close(     self: PinMut<FlattenSink<F, S>>,     cx: &mut Context ) -> Poll<Result<(), <FlattenSink<F, S> as Sink>::SinkError>>

Flush any remaining output and close this sink, if necessary.

impl<F, S> Unpin for FlattenSink<F, S> where     F: Unpin,     S: Unpin,

impl<F, S> Debug for FlattenSink<F, S> where     F: Debug,     S: Debug,

fn fmt(&self, f: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.