futures_util::io

Struct Empty

Source 
pub struct Empty { /* private fields */ }
Available on crate feature io only.
Expand description

Reader for the empty() function.

Trait Implementations§

Source§

impl AsyncBufRead for Empty

Source§

fn poll_fill_buf( self: Pin<&mut Self>, _: &mut Context<'_>, ) -> Poll<Result<&[u8]>>

Attempt to return the contents of the internal buffer, filling it with more data from the inner reader if it is empty. Read more
Source§

fn consume(self: Pin<&mut Self>, _: usize)

Tells this buffer that amt bytes have been consumed from the buffer, so they should no longer be returned in calls to poll_read. Read more
Source§

impl AsyncRead for Empty

Source§

fn poll_read( self: Pin<&mut Self>, _: &mut Context<'_>, _: &mut [u8], ) -> Poll<Result<usize>>

Attempt to read from the AsyncRead into buf. Read more
Source§

fn poll_read_vectored( self: Pin<&mut Self>, cx: &mut Context<'_>, bufs: &mut [IoSliceMut<'_>], ) -> Poll<Result<usize, Error>>

Attempt to read from the AsyncRead into bufs using vectored IO operations. Read more
Source§

impl Debug for Empty

Source§

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

§

impl Freeze for Empty

§

impl RefUnwindSafe for Empty

§

impl Send for Empty

§

impl Sync for Empty

§

impl Unpin for Empty

§

impl UnwindSafe for Empty

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<R> AsyncBufReadExt for R
where R: AsyncBufRead + ?Sized,

Source§

fn fill_buf(&mut self) -> FillBuf<'_, Self> ⓘ
where Self: Unpin,

Available on crate feature io only.
Creates a future which will wait for a non-empty buffer to be available from this I/O object or EOF to be reached. Read more
Source§

fn consume_unpin(&mut self, amt: usize)
where Self: Unpin,

Available on crate feature io only.
A convenience for calling AsyncBufRead::consume on Unpin IO types. Read more
Source§

fn read_until<'a>( &'a mut self, byte: u8, buf: &'a mut Vec<u8>, ) -> ReadUntil<'a, Self> ⓘ
where Self: Unpin,

Available on crate feature io only.
Creates a future which will read all the bytes associated with this I/O object into buf until the delimiter byte or EOF is reached. This method is the async equivalent to BufRead::read_until. Read more
Source§

fn read_line<'a>(&'a mut self, buf: &'a mut String) -> ReadLine<'a, Self> ⓘ
where Self: Unpin,

Available on crate feature io only.
Creates a future which will read all the bytes associated with this I/O object into buf until a newline (the 0xA byte) or EOF is reached, This method is the async equivalent to BufRead::read_line. Read more
Source§

fn lines(self) -> Lines<Self>
where Self: Sized,

Available on crate feature io only.
Returns a stream over the lines of this reader. This method is the async equivalent to BufRead::lines. Read more
Source§

impl<R> AsyncReadExt for R
where R: AsyncRead + ?Sized,

Source§

fn chain<R>(self, next: R) -> Chain<Self, R>
where Self: Sized, R: AsyncRead,

Available on crate feature io only.
Creates an adaptor which will chain this stream with another. Read more
Source§

fn read<'a>(&'a mut self, buf: &'a mut [u8]) -> Read<'a, Self> ⓘ
where Self: Unpin,

Available on crate feature io only.
Tries to read some bytes directly into the given buf in asynchronous manner, returning a future type. Read more
Source§

fn read_vectored<'a>( &'a mut self, bufs: &'a mut [IoSliceMut<'a>], ) -> ReadVectored<'a, Self> ⓘ
where Self: Unpin,

Available on crate feature io only.
Creates a future which will read from the AsyncRead into bufs using vectored IO operations. Read more
Source§

fn read_exact<'a>(&'a mut self, buf: &'a mut [u8]) -> ReadExact<'a, Self> ⓘ
where Self: Unpin,

Available on crate feature io only.
Creates a future which will read exactly enough bytes to fill buf, returning an error if end of file (EOF) is hit sooner. Read more
Source§

fn read_to_end<'a>(&'a mut self, buf: &'a mut Vec<u8>) -> ReadToEnd<'a, Self> ⓘ
where Self: Unpin,

Available on crate feature io only.
Creates a future which will read all the bytes from this AsyncRead. Read more
Source§

fn read_to_string<'a>( &'a mut self, buf: &'a mut String, ) -> ReadToString<'a, Self> ⓘ
where Self: Unpin,

Available on crate feature io only.
Creates a future which will read all the bytes from this AsyncRead. Read more
Source§

fn split(self) -> (ReadHalf<Self>, WriteHalf<Self>)
where Self: AsyncWrite + Sized,

Available on crate feature io only.
Helper method for splitting this read/write object into two halves. Read more
Source§

fn take(self, limit: u64) -> Take<Self>
where Self: Sized,

Available on crate feature io only.
Creates an AsyncRead adapter which will read at most limit bytes from the underlying reader. 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> 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, 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.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 0 bytes