1.0.0[−][src]Function std::io::stderr
ⓘImportant traits for Stderr
pub fn stderr() -> Stderr
Constructs a new handle to the standard error of the current process.
This handle is not buffered.
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 write bytes that are not valid UTF-8 will return an error.
Examples
Using implicit synchronization:
use std::io::{self, Write}; fn main() -> io::Result<()> { io::stderr().write_all(b"hello world")?; Ok(()) }Run
Using explicit synchronization:
use std::io::{self, Write}; fn main() -> io::Result<()> { let stderr = io::stderr(); let mut handle = stderr.lock(); handle.write_all(b"hello world")?; Ok(()) }Run