pub struct Chain<T, U> { /* private fields */ }
Expand description
Implementations§
source§impl<T, U> Chain<T, U>
impl<T, U> Chain<T, U>
1.20.0 · sourcepub fn into_inner(self) -> (T, U)
pub fn into_inner(self) -> (T, U)
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(())
}
Run1.20.0 · sourcepub fn get_ref(&self) -> (&T, &U)
pub fn get_ref(&self) -> (&T, &U)
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(())
}
Run1.20.0 · sourcepub fn get_mut(&mut self) -> (&mut T, &mut U)
pub fn get_mut(&mut self) -> (&mut T, &mut U)
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
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(())
}
RunTrait Implementations§
1.9.0 · source§impl<T: BufRead, U: BufRead> BufRead for Chain<T, U>
impl<T: BufRead, U: BufRead> BufRead for Chain<T, U>
source§fn fill_buf(&mut self) -> Result<&[u8]>
fn fill_buf(&mut self) -> Result<&[u8]>
Returns the contents of the internal buffer, filling it with more data
from the inner reader if it is empty. Read more
source§fn consume(&mut self, amt: usize)
fn consume(&mut self, amt: usize)
Tells this buffer that
amt
bytes have been consumed from the buffer,
so they should no longer be returned in calls to read
. Read moresource§fn has_data_left(&mut self) -> Result<bool>
fn has_data_left(&mut self) -> Result<bool>
🔬This is a nightly-only experimental API. (
buf_read_has_data_left
#86423)Check if the underlying
Read
has any data left to be read. Read moresource§fn skip_until(&mut self, byte: u8) -> Result<usize>
fn skip_until(&mut self, byte: u8) -> Result<usize>
🔬This is a nightly-only experimental API. (
bufread_skip_until
#111735)Skip all bytes until the delimiter
byte
or EOF is reached. Read moresource§fn read_line(&mut self, buf: &mut String) -> Result<usize>
fn read_line(&mut self, buf: &mut String) -> Result<usize>
Read all bytes until a newline (the
0xA
byte) is reached, and append
them to the provided String
buffer. Read moresource§impl<T: Read, U: Read> Read for Chain<T, U>
impl<T: Read, U: Read> Read for Chain<T, U>
source§fn read(&mut self, buf: &mut [u8]) -> Result<usize>
fn read(&mut self, buf: &mut [u8]) -> Result<usize>
Pull some bytes from this source into the specified buffer, returning
how many bytes were read. Read more
source§fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize>
fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize>
Like
read
, except that it reads into a slice of buffers. Read moresource§fn is_read_vectored(&self) -> bool
fn is_read_vectored(&self) -> bool
🔬This is a nightly-only experimental API. (
can_vector
#69941)source§fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize>
fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize>
Read all bytes until EOF in this source, placing them into
buf
. Read moresource§fn read_to_string(&mut self, buf: &mut String) -> Result<usize>
fn read_to_string(&mut self, buf: &mut String) -> Result<usize>
Read all bytes until EOF in this source, appending them to
buf
. Read more1.6.0 · source§fn read_exact(&mut self, buf: &mut [u8]) -> Result<()>
fn read_exact(&mut self, buf: &mut [u8]) -> Result<()>
Read the exact number of bytes required to fill
buf
. Read moresource§fn read_buf(&mut self, buf: BorrowedCursor<'_>) -> Result<()>
fn read_buf(&mut self, buf: BorrowedCursor<'_>) -> Result<()>
🔬This is a nightly-only experimental API. (
read_buf
#78485)Pull some bytes from this source into the specified buffer. Read more
source§fn read_buf_exact(&mut self, cursor: BorrowedCursor<'_>) -> Result<()>
fn read_buf_exact(&mut self, cursor: BorrowedCursor<'_>) -> Result<()>
🔬This is a nightly-only experimental API. (
read_buf
#78485)Read the exact number of bytes required to fill
cursor
. Read moresource§fn by_ref(&mut self) -> &mut Selfwhere
Self: Sized,
fn by_ref(&mut self) -> &mut Selfwhere
Self: Sized,
Creates a “by reference” adaptor for this instance of
Read
. Read moreAuto Trait Implementations§
impl<T, U> RefUnwindSafe for Chain<T, U>where
T: RefUnwindSafe,
U: RefUnwindSafe,
impl<T, U> Send for Chain<T, U>
impl<T, U> Sync for Chain<T, U>
impl<T, U> Unpin for Chain<T, U>
impl<T, U> UnwindSafe for Chain<T, U>where
T: UnwindSafe,
U: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more