pub fn stdin() -> 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 Considerations
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.
In a process with a detached console, such as one using
#![windows_subsystem = "windows"]
, or in a child process spawned from such a process,
the contained handle will be null. In such cases, the standard library’s Read
and
Write
will do nothing and silently succeed. All other I/O operations, via the
standard library or via raw Windows API calls, will fail.
§Examples
Using implicit synchronization:
use std::io;
fn main() -> io::Result<()> {
let mut buffer = String::new();
io::stdin().read_line(&mut buffer)?;
Ok(())
}
RunUsing 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