Struct futures_util::sink::Drain

#[must_use = "futures do nothing unless polled"]
pub struct Drain<T> { /* fields omitted */ }

A sink that will discard all items given to it.

See the drain() function for more details.

Trait Implementations

impl<T: Debug> Debug for Drain<T>

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

Formats the value using the given formatter.

impl<T> Sink for Drain<T>

type SinkItem = T

The type of value that the sink accepts.

type SinkError = DrainError

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>>

Attempts to prepare the Sink to receive a value.

fn start_send(     self: PinMut<Self>,     _item: Self::SinkItem ) -> Result<(), Self::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<Self>,     _cx: &mut Context ) -> Poll<Result<(), Self::SinkError>>

Flush any remaining output from this sink.

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

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