Function std::io::stdin

1.0.0· source · [−]

pub fn stdin() -> StdinⓘNotable traits for Stdin
impl Read for Stdin

Expand description

Constructs a new handle to the standard input of the current process.

Each handle returned is a reference to a shared global buffer whose access is synchronized via a mutex. If you need more explicit control over locking, see the Stdin::lock 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

Using implicit synchronization:

use std::io;

fn main() -> io::Result<()> {
    let mut buffer = String::new();
    io::stdin().read_line(&mut buffer)?;
    Ok(())
}

Run

Using explicit synchronization:

use std::io::{self, BufRead};

fn main() -> io::Result<()> {
    let mut buffer = String::new();
    let stdin = io::stdin();
    let mut handle = stdin.lock();

    handle.read_line(&mut buffer)?;
    Ok(())
}

Run