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/Rust

Struct std::io::Chain

pub struct Chain<T, U> { /* fields omitted */ }

Adaptor to chain together two readers.

This struct is generally created by calling chain on a reader. Please see the documentation of chain for more details.

Methods

impl<T, U> Chain<T, U> [src]

🔬 This is a nightly-only experimental API. (more_io_inner_methods #41519)

Consumes the Chain, returning the wrapped readers.

Examples

#![feature(more_io_inner_methods)]

use std::io::prelude::*;
use std::fs::File;

let mut foo_file = File::open("foo.txt")?;
let mut bar_file = File::open("bar.txt")?;

let chain = foo_file.chain(bar_file);
let (foo_file, bar_file) = chain.into_inner();

🔬 This is a nightly-only experimental API. (more_io_inner_methods #41519)

Gets references to the underlying readers in this Chain.

Examples

#![feature(more_io_inner_methods)]

use std::io::prelude::*;
use std::fs::File;

let mut foo_file = File::open("foo.txt")?;
let mut bar_file = File::open("bar.txt")?;

let chain = foo_file.chain(bar_file);
let (foo_file, bar_file) = chain.get_ref();

🔬 This is a nightly-only experimental API. (more_io_inner_methods #41519)

Gets mutable references to the underlying readers in this Chain.

Care should be taken to avoid modifying the internal I/O state of the underlying readers as doing so may corrupt the internal state of this Chain.

Examples

#![feature(more_io_inner_methods)]

use std::io::prelude::*;
use std::fs::File;

let mut foo_file = File::open("foo.txt")?;
let mut bar_file = File::open("bar.txt")?;

let mut chain = foo_file.chain(bar_file);
let (foo_file, bar_file) = chain.get_mut();

Trait Implementations

impl<T: Debug, U: Debug> Debug for Chain<T, U>
1.16.0
[src]

Formats the value using the given formatter.

impl<T: Read, U: Read> Read for Chain<T, U> [src]

Pull some bytes from this source into the specified buffer, returning how many bytes were read. Read more

Read all bytes until EOF in this source, placing them into buf. Read more

Read all bytes until EOF in this source, placing them into buf. Read more

Read the exact number of bytes required to fill buf. Read more

Creates a "by reference" adaptor for this instance of Read. Read more

Transforms this Read instance to an Iterator over its bytes. Read more

🔬 This is a nightly-only experimental API. (io #27802)the semantics of a partial read/write of where errors happen is currently unclear and may change

Transforms this Read instance to an Iterator over chars. Read more

Creates an adaptor which will chain this stream with another. Read more

Creates an adaptor which will read at most limit bytes from it. Read more

impl<T: BufRead, U: BufRead> BufRead for Chain<T, U>
1.9.0
[src]

Fills the internal buffer of this object, returning the buffer contents. Read more

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

Read all bytes into buf until the delimiter byte or EOF is reached. Read more

Read all bytes until a newline (the 0xA byte) is reached, and append them to the provided buffer. Read more

Returns an iterator over the contents of this reader split on the byte byte. Read more

Returns an iterator over the lines of this reader. Read more

© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/io/struct.Chain.html