futures_util::sink

Struct Drain

source 
pub struct Drain<T> { /* private fields */ }
Available on crate feature sink only.
Expand description

Sink for the drain function.

Trait Implementations§

source§

impl<T> Clone for Drain<T>

source§

fn clone(&self) -> Self

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
source§

impl<T: Debug> Debug for Drain<T>

source§

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

Formats the value using the given formatter. Read more
source§

impl<T> Sink<T> for Drain<T>

source§

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>>

Attempts to prepare the Sink to receive a value. Read more
source§

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 more
source§

fn poll_flush( self: Pin<&mut Self>, _cx: &mut Context<'_>, ) -> Poll<Result<(), Self::Error>>

Flush any remaining output from this sink. Read more
source§

fn poll_close( self: Pin<&mut Self>, _cx: &mut Context<'_>, ) -> Poll<Result<(), Self::Error>>

Flush any remaining output and close this sink, if necessary. Read more
source§

impl<T> Unpin for Drain<T>

Auto Trait Implementations§

§

impl<T> Freeze for Drain<T>

§

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> Any for T
where T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for T
where T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> CloneToUninit for T
where T: Clone,

source§

unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for T
where U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<T, Item> SinkExt<Item> for T
where 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,

Available on crate feature sink only.
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,

Available on crate feature sink only.
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,

Available on crate feature sink only.
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>,

Available on crate feature sink only.
Map this sink’s error to a different error type using the Into trait. Read more
source§

fn buffer(self, capacity: usize) -> Buffer<Self, Item>
where Self: Sized,

Available on crate feature sink only.
Adds a fixed-size buffer to the current sink. Read more
source§

fn close(&mut self) -> Close<'_, Self, Item> ⓘ
where Self: Unpin,

Available on crate feature sink only.
Close the sink.
source§

fn fanout<Si>(self, other: Si) -> Fanout<Self, Si>
where Self: Sized, Item: Clone, Si: Sink<Item, Error = Self::Error>,

Available on crate feature sink only.
Fanout items to multiple sinks. Read more
source§

fn flush(&mut self) -> Flush<'_, Self, Item> ⓘ
where Self: Unpin,

Available on crate feature sink only.
Flush the sink, processing all pending items. Read more
source§

fn send(&mut self, item: Item) -> Send<'_, Self, Item> ⓘ
where Self: Unpin,

Available on crate feature sink only.
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,

Available on crate feature sink only.
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,

Available on crate feature sink only.
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,

Available on crate feature sink only.
Wrap this sink in an Either sink, making it the left-hand variant of that Either. Read more
source§

fn right_sink<Si1>(self) -> Either<Si1, Self> ⓘ
where Si1: Sink<Item, Error = Self::Error>, Self: Sized,

Available on crate feature sink only.
Wrap this stream in an Either stream, making it the right-hand variant of that Either. Read more
source§

fn compat(self) -> CompatSink<Self, Item>
where Self: Sized + Unpin,

Available on crate features sink and compat only.
Wraps a Sink into a sink compatible with libraries using futures 0.1 Sink. Requires the compat feature to be enabled.
source§

fn poll_ready_unpin( &mut self, cx: &mut Context<'_>, ) -> Poll<Result<(), Self::Error>>
where Self: Unpin,

Available on crate feature sink only.
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,

Available on crate feature sink only.
A convenience method for calling Sink::start_send on Unpin sink types.
source§

fn poll_flush_unpin( &mut self, cx: &mut Context<'_>, ) -> Poll<Result<(), Self::Error>>
where Self: Unpin,

Available on crate feature sink only.
A convenience method for calling Sink::poll_flush on Unpin sink types.
source§

fn poll_close_unpin( &mut self, cx: &mut Context<'_>, ) -> Poll<Result<(), Self::Error>>
where Self: Unpin,

Available on crate feature sink only.
A convenience method for calling Sink::poll_close on Unpin sink types.
source§

impl<T> ToOwned for T
where T: Clone,

source§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

source§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.