Struct async_std::io::Empty

pub struct Empty { /* fields omitted */ }

A reader that contains no data.

This reader is constructed by the sink function.

Trait Implementations

impl Debug for Empty

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

Formats the value using the given formatter.

impl AsyncRead for Empty

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

Attempt to read from the AsyncRead into buf.

unsafe fn initializer(&self) -> Initializer

Determines if this AsyncReader can work with buffers of uninitialized memory.

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.

impl AsyncBufRead for Empty

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

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

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].