Struct futures::io::Empty [−][src]
#[must_use = "readers do nothing unless polled"]pub struct Empty { /* fields omitted */ }
Reader for the empty() function.
Trait Implementations
impl AsyncBufRead for Empty[src][+]
pub fn poll_fill_buf(
self: Pin<&mut Empty>,
&mut Context<'_>
) -> Poll<Result<&[u8], Error>>[src][−]
self: Pin<&mut Empty>,
&mut Context<'_>
) -> Poll<Result<&[u8], Error>>
Attempt to return the contents of the internal buffer, filling it with more data from the inner reader if it is empty. Read more
pub fn consume(self: Pin<&mut Empty>, usize)[src][−]
impl AsyncRead for Empty[src][+]
pub fn poll_read(
self: Pin<&mut Empty>,
&mut Context<'_>,
&mut [u8]
) -> Poll<Result<usize, Error>>[src][−]
self: Pin<&mut Empty>,
&mut Context<'_>,
&mut [u8]
) -> Poll<Result<usize, Error>>
Attempt to read from the AsyncRead into buf. Read more
pub fn poll_read_vectored(
self: Pin<&mut Self>,
cx: &mut Context<'_>,
bufs: &mut [IoSliceMut<'_>]
) -> Poll<Result<usize, Error>>[src][−]
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
impl Debug for Empty[src][+]
Auto Trait Implementations
impl RefUnwindSafe for Empty
impl Send for Empty
impl Sync for Empty
impl Unpin for Empty
impl UnwindSafe for Empty
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized, [src][+]
T: 'static + ?Sized,
pub fn type_id(&self) -> TypeId[src][−]
Gets the TypeId of self. Read more
impl<R> AsyncBufReadExt for R where
R: AsyncBufRead + ?Sized, [src][+]
R: AsyncBufRead + ?Sized,
pub fn fill_buf(&mut self) -> FillBuf<'_, Self>ⓘ where
Self: Unpin, [src][−]
Self: Unpin,
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
pub fn consume_unpin(&mut self, amt: usize) where
Self: Unpin, [src][−]
Self: Unpin,
A convenience for calling AsyncBufRead::consume on Unpin IO types. Read more
pub fn read_until(
&'a mut self,
byte: u8,
buf: &'a mut Vec<u8, Global>
) -> ReadUntil<'a, Self>ⓘ where
Self: Unpin, [src][−]
&'a mut self,
byte: u8,
buf: &'a mut Vec<u8, Global>
) -> ReadUntil<'a, Self>ⓘ where
Self: Unpin,
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
pub fn read_line(&'a mut self, buf: &'a mut String) -> ReadLine<'a, Self>ⓘ where
Self: Unpin, [src][−]
Self: Unpin,
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
pub fn lines(self) -> Lines<Self>[src][−]
Returns a stream over the lines of this reader.
This method is the async equivalent to BufRead::lines. Read more
impl<R> AsyncReadExt for R where
R: AsyncRead + ?Sized, [src][+]
R: AsyncRead + ?Sized,
pub fn chain<R>(self, next: R) -> Chain<Self, R> where
R: AsyncRead, [src][−]
R: AsyncRead,
Creates an adaptor which will chain this stream with another. Read more
pub fn read(&'a mut self, buf: &'a mut [u8]) -> Read<'a, Self>ⓘ where
Self: Unpin, [src][−]
Self: Unpin,
Tries to read some bytes directly into the given buf in asynchronous
manner, returning a future type. Read more
pub fn read_vectored(
&'a mut self,
bufs: &'a mut [IoSliceMut<'a>]
) -> ReadVectored<'a, Self>ⓘNotable traits for ReadVectored<'_, R>
impl<'_, R> Future for ReadVectored<'_, R> where
R: AsyncRead + Unpin + ?Sized, type Output = Result<usize, Error>; where
Self: Unpin, [src][−]
&'a mut self,
bufs: &'a mut [IoSliceMut<'a>]
) -> ReadVectored<'a, Self>ⓘ
Notable traits for ReadVectored<'_, R>
impl<'_, R> Future for ReadVectored<'_, R> where
R: AsyncRead + Unpin + ?Sized, type Output = Result<usize, Error>;Self: Unpin,
Creates a future which will read from the AsyncRead into bufs using vectored
IO operations. Read more
pub fn read_exact(&'a mut self, buf: &'a mut [u8]) -> ReadExact<'a, Self>ⓘ where
Self: Unpin, [src][−]
Self: Unpin,
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
pub fn read_to_end(
&'a mut self,
buf: &'a mut Vec<u8, Global>
) -> ReadToEnd<'a, Self>ⓘ where
Self: Unpin, [src][−]
&'a mut self,
buf: &'a mut Vec<u8, Global>
) -> ReadToEnd<'a, Self>ⓘ where
Self: Unpin,
Creates a future which will read all the bytes from this AsyncRead. Read more
pub fn read_to_string(
&'a mut self,
buf: &'a mut String
) -> ReadToString<'a, Self>ⓘNotable traits for ReadToString<'_, A>
impl<'_, A> Future for ReadToString<'_, A> where
A: AsyncRead + Unpin + ?Sized, type Output = Result<usize, Error>; where
Self: Unpin, [src][−]
&'a mut self,
buf: &'a mut String
) -> ReadToString<'a, Self>ⓘ
Notable traits for ReadToString<'_, A>
impl<'_, A> Future for ReadToString<'_, A> where
A: AsyncRead + Unpin + ?Sized, type Output = Result<usize, Error>;Self: Unpin,
Creates a future which will read all the bytes from this AsyncRead. Read more
pub fn split(self) -> (ReadHalf<Self>, WriteHalf<Self>) where
Self: AsyncWrite, [src][−]
Self: AsyncWrite,
Helper method for splitting this read/write object into two halves. Read more
pub fn take(self, limit: u64) -> Take<Self>[src][−]
Creates an AsyncRead adapter which will read at most limit bytes
from the underlying reader. Read more
impl<T> Borrow<T> for T where
T: ?Sized, [src][+]
T: ?Sized,
pub fn borrow(&self) -> &Tⓘ[src][−]
Immutably borrows from an owned value. Read more
impl<T> BorrowMut<T> for T where
T: ?Sized, [src][+]
T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut Tⓘ[src][−]
Mutably borrows from an owned value. Read more
impl<T> From<T> for T[src][+]
impl<T, U> Into<U> for T where
U: From<T>, [src][+]
U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>, [src][+]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src][−]
Performs the conversion.
impl<T, U> TryInto<U> for T where
U: TryFrom<T>, [src][+]
U: TryFrom<T>,