Struct futures_util::try_future::FlattenSink

[+] Show declaration

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

[−] Expand description

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

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

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Formats the value using the given formatter.

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

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

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type SinkItem = S::SinkItem

The type of value that the sink accepts.

type SinkError = S::SinkError

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

fn poll_ready(     self: PinMut<Self>,     cx: &mut Context ) -> Poll<Result<(), Self::SinkError>>

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Attempts to prepare the Sink to receive a value.

fn start_send(     self: PinMut<Self>,     item: Self::SinkItem ) -> Result<(), Self::SinkError>

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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<Self>,     cx: &mut Context ) -> Poll<Result<(), Self::SinkError>>

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Flush any remaining output from this sink.

fn poll_close(     self: PinMut<Self>,     cx: &mut Context ) -> Poll<Result<(), Self::SinkError>>

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