1.0.0[−][src]Struct tract_nnef::internal::tract_downcast_rs::__std::io::Stdin
A handle to the standard input stream of a process.
Each handle is a shared reference to a global buffer of input data to this
process. A handle can be lock
'd to gain full access to BufRead
methods
(e.g., .lines()
). Reads to this handle are otherwise locked with respect
to other reads.
This handle implements the Read
trait, but beware that concurrent reads
of Stdin
must be executed with care.
Created by the io::stdin
method.
Note: Windows Portability Consideration
When operating in a console, the Windows implementation of this stream does not support non-UTF-8 byte sequences. Attempting to read bytes that are not valid UTF-8 will return an error.
Examples
use std::io::{self, Read}; fn main() -> io::Result<()> { let mut buffer = String::new(); let mut stdin = io::stdin(); // We get `Stdin` here. stdin.read_to_string(&mut buffer)?; Ok(()) }
Implementations
impl Stdin
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pub fn lock(&self) -> StdinLock<'_>ⓘ
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Locks this handle to the standard input stream, returning a readable guard.
The lock is released when the returned lock goes out of scope. The
returned guard also implements the Read
and BufRead
traits for
accessing the underlying data.
Examples
use std::io::{self, Read}; fn main() -> io::Result<()> { let mut buffer = String::new(); let stdin = io::stdin(); let mut handle = stdin.lock(); handle.read_to_string(&mut buffer)?; Ok(()) }
pub fn read_line(&self, buf: &mut String) -> Result<usize, Error>
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Locks this handle and reads a line of input, appending it to the specified buffer.
For detailed semantics of this method, see the documentation on
BufRead::read_line
.
Examples
use std::io; let mut input = String::new(); match io::stdin().read_line(&mut input) { Ok(n) => { println!("{} bytes read", n); println!("{}", input); } Err(error) => println!("error: {}", error), }
You can run the example one of two ways:
- Pipe some text to it, e.g.,
printf foo | path/to/executable
- Give it text interactively by running the executable directly, in which case it will wait for the Enter key to be pressed before continuing
Trait Implementations
impl AsRawFd for Stdin
1.21.0[src]
impl Debug for Stdin
1.16.0[src]
impl Read for Stdin
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fn read(&mut self, buf: &mut [u8]) -> Result<usize, Error>
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fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize, Error>
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fn is_read_vectored(&self) -> bool
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unsafe fn initializer(&self) -> Initializer
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fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, Error>
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fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>
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fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), Error>
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fn by_ref(&mut self) -> &mut SelfⓘNotable traits for &'_ mut W
impl<'_, W> Write for &'_ mut W where
W: Write + ?Sized, impl<'_, R> Read for &'_ mut R where
R: Read + ?Sized, impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;
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Notable traits for &'_ mut W
impl<'_, W> Write for &'_ mut W where
W: Write + ?Sized, impl<'_, R> Read for &'_ mut R where
R: Read + ?Sized, impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;
fn bytes(self) -> Bytes<Self>ⓘ
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fn chain<R>(self, next: R) -> Chain<Self, R>ⓘ where
R: Read,
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R: Read,
fn take(self, limit: u64) -> Take<Self>ⓘ
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Auto Trait Implementations
impl RefUnwindSafe for Stdin
impl Send for Stdin
impl Sync for Stdin
impl Unpin for Stdin
impl UnwindSafe for Stdin
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow(&self) -> &TⓘNotable traits for &'_ mut W
impl<'_, W> Write for &'_ mut W where
W: Write + ?Sized, impl<'_, R> Read for &'_ mut R where
R: Read + ?Sized, impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;
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Notable traits for &'_ mut W
impl<'_, W> Write for &'_ mut W where
W: Write + ?Sized, impl<'_, R> Read for &'_ mut R where
R: Read + ?Sized, impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut W
impl<'_, W> Write for &'_ mut W where
W: Write + ?Sized, impl<'_, R> Read for &'_ mut R where
R: Read + ?Sized, impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;
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Notable traits for &'_ mut W
impl<'_, W> Write for &'_ mut W where
W: Write + ?Sized, impl<'_, R> Read for &'_ mut R where
R: Read + ?Sized, impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;
impl<T> Downcast for T where
T: Any,
T: Any,
fn into_any(self: Box<T>) -> Box<dyn Any + 'static>ⓘNotable traits for Box<W>
impl<W> Write for Box<W> where
W: Write + ?Sized, impl<R> Read for Box<R> where
R: Read + ?Sized, impl<F> Future for Box<F> where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<I> Iterator for Box<I> where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;
Notable traits for Box<W>
impl<W> Write for Box<W> where
W: Write + ?Sized, impl<R> Read for Box<R> where
R: Read + ?Sized, impl<F> Future for Box<F> where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<I> Iterator for Box<I> where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
fn as_any(&self) -> &(dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
impl<T> DowncastSync for T where
T: Send + Sync + Any,
T: Send + Sync + Any,
impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,