[−][src]Module futures_util::io

This is supported on crate feature io only.

IO

This module contains a number of functions for working with AsyncRead, AsyncWrite, AsyncSeek, and AsyncBufRead types, including the AsyncReadExt, AsyncWriteExt, AsyncSeekExt, and AsyncBufReadExt traits which add methods to the AsyncRead, AsyncWrite, AsyncSeek, and AsyncBufRead types.

This module is only available when the io and std features of this library is activated, and it is activated by default.

Structs

AllowStdIo	`io` A simple wrapper type which allows types which implement only implement `std::io::Read` or `std::io::Write` to be used in contexts which expect an `AsyncRead` or `AsyncWrite`.
BufReader	`io` The `BufReader` struct adds buffering to any reader.
BufWriter	`io` Wraps a writer and buffers its output.
Chain	`io` Reader for the `chain` method.
Close	`io` Future for the `close` method.
Copy	`io` Future for the `copy()` function.
CopyBuf	`io` Future for the `copy_buf()` function.
Cursor	`io` A `Cursor` wraps an in-memory buffer and provides it with a `AsyncSeek` implementation.
Empty	`io` Reader for the `empty()` function.
Error	`io` The error type for I/O operations of the `Read`, `Write`, `Seek`, and associated traits.
FillBuf	`io` Future for the `fill_buf` method.
Flush	`io` Future for the `flush` method.
IntoSink	`io` and `sink` Sink for the `into_sink` method.
IoSlice	`io` A buffer type used with `Write::write_vectored`.
IoSliceMut	`io` A buffer type used with `Read::read_vectored`.
Initializer	Experimental`io` and `read-initializer` A type used to conditionally initialize buffers passed to `Read` methods.
Lines	`io` Stream for the `lines` method.
Read	`io` Future for the `read` method.
ReadExact	`io` Future for the `read_exact` method.
ReadHalf	`io` The readable half of an object returned from `AsyncRead::split`.
ReadLine	`io` Future for the `read_line` method.
ReadToEnd	`io` Future for the `read_to_end` method.
ReadToString	`io` Future for the `read_to_string` method.
ReadUntil	`io` Future for the `read_until` method.
ReadVectored	`io` Future for the `read_vectored` method.
Repeat	`io` Reader for the `repeat()` function.
ReuniteError	`io` Error indicating a `ReadHalf<T>` and `WriteHalf<T>` were not two halves of a `AsyncRead + AsyncWrite`, and thus could not be `reunite`d.
Seek	`io` Future for the `seek` method.
Sink	`io` Writer for the `sink()` function.
Take	`io` Reader for the `take` method.
Window	`io` A owned window around an underlying buffer.
Write	`io` Future for the `write` method.
WriteAll	`io` Future for the `write_all` method.
WriteAllVectored	`io` Future for the `write_all_vectored` method.
WriteHalf	`io` The writable half of an object returned from `AsyncRead::split`.
WriteVectored	`io` Future for the `write_vectored` method.

Enums

ErrorKind	`io` A list specifying general categories of I/O error.
SeekFrom	`io` Enumeration of possible methods to seek within an I/O object.

Traits

AsyncBufRead	`io` Read bytes asynchronously.
AsyncBufReadExt	`io` An extension trait which adds utility methods to `AsyncBufRead` types.
AsyncRead	`io` Read bytes asynchronously.
AsyncReadExt	`io` An extension trait which adds utility methods to `AsyncRead` types.
AsyncSeek	`io` Seek bytes asynchronously.
AsyncSeekExt	`io` An extension trait which adds utility methods to `AsyncSeek` types.
AsyncWrite	`io` Write bytes asynchronously.
AsyncWriteExt	`io` An extension trait which adds utility methods to `AsyncWrite` types.

Functions

copy	`io` Creates a future which copies all the bytes from one object to another.
copy_buf	`io` Creates a future which copies all the bytes from one object to another.
empty	`io` Constructs a new handle to an empty reader.
repeat	`io` Creates an instance of a reader that infinitely repeats one byte.
sink	`io` Creates an instance of a writer which will successfully consume all data.

Type Definitions

Result

io

A specialized Result type for I/O operations.