Chain in std::io - Rust (original) (raw)
Struct Chain
1.0.0 · Source
pub struct Chain<T, U> { /* private fields */ }Expand description
Adapter 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.
1.20.0 · Source
Consumes the Chain, returning the wrapped readers.
§Examples
use std::io;
use std::io::prelude::*;
use std::fs::File;
fn main() -> io::Result<()> {
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();
Ok(())
}1.20.0 · Source
Gets references to the underlying readers in this Chain.
§Examples
use std::io;
use std::io::prelude::*;
use std::fs::File;
fn main() -> io::Result<()> {
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();
Ok(())
}1.20.0 · Source
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 thisChain.
§Examples
use std::io;
use std::io::prelude::*;
use std::fs::File;
fn main() -> io::Result<()> {
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();
Ok(())
}Returns the contents of the internal buffer, filling it with more data from the inner reader if it is empty. 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
Reads all bytes into buf until the delimiter byte or EOF is reached. Read more
🔬This is a nightly-only experimental API. (buf_read_has_data_left #86423)
Checks if the underlying Read has any data left to be read. Read more
Skips all bytes until the delimiter byte or EOF is reached. Read more
Reads all bytes until a newline (the 0xA byte) is reached, and append them to the provided String buffer. Read more
Returns an iterator over the contents of this reader split on the bytebyte. Read more
Returns an iterator over the lines of this reader. Read more
Pull some bytes from this source into the specified buffer, returning how many bytes were read. Read more
Like read, except that it reads into a slice of buffers. Read more
🔬This is a nightly-only experimental API. (can_vector #69941)
Determines if this Reader has an efficient read_vectoredimplementation. Read more
Reads all bytes until EOF in this source, placing them into buf. Read more
🔬This is a nightly-only experimental API. (read_buf #78485)
Pull some bytes from this source into the specified buffer. Read more
Reads all bytes until EOF in this source, appending them to buf. Read more
Reads the exact number of bytes required to fill buf. Read more
🔬This is a nightly-only experimental API. (read_buf #78485)
Reads the exact number of bytes required to fill cursor. 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
Creates an adapter which will chain this stream with another. Read more
Creates an adapter which will read at most limit bytes from it. Read more