[−][src]Struct futures::io::Empty
#[must_use = "readers do nothing unless polled"] pub struct Empty { /* fields omitted */ }
Reader for the empty() function.
Trait Implementations
impl Debug for Empty[src][+]
fn fmt(&self, f: &mut Formatter) -> Result<(), Error>[src][−]
Formats the value using the given formatter. Read more
impl AsyncRead for Empty[src][+]
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
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 AsyncBufRead for Empty[src][+]
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
fn consume(self: Pin<&mut Empty>, usize)[src][−]
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
Auto Trait Implementations
impl Send for Empty
impl Sync for Empty
impl Unpin for Empty
impl UnwindSafe for Empty
impl RefUnwindSafe for Empty
Blanket Implementations
impl<T, U> Into<U> for T where
U: From<T>, [src][+]
U: From<T>,
impl<T> From<T> for T[src][+]
impl<T, U> TryFrom<U> for T where
U: Into<T>, [src][+]
U: Into<T>,
type Error = !
The type returned in the event of a conversion error.
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>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src][−]
Performs the conversion.
impl<T> Borrow<T> for T where
T: ?Sized, [src][+]
T: ?Sized,
ⓘImportant traits for &'_ mut Ffn borrow(&self) -> &T[src][−]
Immutably borrows from an owned value. Read more
impl<T> BorrowMut<T> for T where
T: ?Sized, [src][+]
T: ?Sized,
ⓘImportant traits for &'_ mut Ffn borrow_mut(&mut self) -> &mut T[src][−]
Mutably borrows from an owned value. Read more
impl<T> Any for T where
T: 'static + ?Sized, [src][+]
T: 'static + ?Sized,
fn type_id(&self) -> TypeId[src][−]
Gets the TypeId of self. Read more
impl<R> AsyncReadExt for R where
R: AsyncRead + ?Sized, [src][+]
R: AsyncRead + ?Sized,
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
ⓘImportant traits for Read<'_, R>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
ⓘImportant traits for ReadVectored<'_, R>Important traits for ReadVectored<'_, R>
impl<'_, R> Future for ReadVectored<'_, R> where
R: Unpin + AsyncRead + ?Sized, type Output = Result<usize, Error>;fn read_vectored(
&'a mut self,
bufs: &'a mut [IoSliceMut<'a>]
) -> ReadVectored<'a, Self> where
Self: Unpin, [src][−]
Important traits for ReadVectored<'_, R>
impl<'_, R> Future for ReadVectored<'_, R> where
R: Unpin + AsyncRead + ?Sized, type Output = Result<usize, Error>;&'a mut self,
bufs: &'a mut [IoSliceMut<'a>]
) -> ReadVectored<'a, Self> where
Self: Unpin,
Creates a future which will read from the AsyncRead into bufs using vectored IO operations. Read more
ⓘImportant traits for ReadExact<'_, R>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
ⓘImportant traits for ReadToEnd<'_, A>fn read_to_end(&'a mut self, buf: &'a mut Vec<u8>) -> ReadToEnd<'a, Self> where
Self: Unpin, [src][−]
Self: Unpin,
Creates a future which will read all the bytes from this AsyncRead. Read more
ⓘImportant traits for ReadToString<'_, A>Important traits for ReadToString<'_, A>
impl<'_, A> Future for ReadToString<'_, A> where
A: AsyncRead + Unpin + ?Sized, type Output = Result<usize, Error>;fn read_to_string(&'a mut self, buf: &'a mut String) -> ReadToString<'a, Self> where
Self: Unpin, [src][−]
Important 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
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
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<R> AsyncBufReadExt for R where
R: AsyncBufRead + ?Sized, [src][+]
R: AsyncBufRead + ?Sized,
ⓘImportant traits for ReadUntil<'_, R>fn read_until(
&'a mut self,
byte: u8,
buf: &'a mut Vec<u8>
) -> ReadUntil<'a, Self> where
Self: Unpin, [src][−]
&'a mut self,
byte: u8,
buf: &'a mut Vec<u8>
) -> 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
ⓘImportant traits for ReadLine<'_, R>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
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