Struct std::io::Stderr1.0.0[][src]

pub struct Stderr { /* fields omitted */ }

A handle to the standard error stream of a process.

For more information, see the io::stderr 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 write bytes that are not valid UTF-8 will return an error.


impl Stderr[src]

pub fn lock(&self) -> StderrLock<'_>

Notable traits for StderrLock<'_>

impl Write for StderrLock<'_>

Locks this handle to the standard error stream, returning a writable guard.

The lock is released when the returned lock goes out of scope. The returned guard also implements the Write trait for writing data.


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

fn foo() -> io::Result<()> {
    let stderr = io::stderr();
    let mut handle = stderr.lock();

    handle.write_all(b"hello world")?;


Trait Implementations

impl AsRawFd for Stderr1.21.0[src]

This is supported on Unix only.

impl AsRawFd for Stderr[src]

This is supported on WASI only.

impl AsRawHandle for Stderr1.21.0[src]

This is supported on Windows only.

impl Debug for Stderr1.16.0[src]

impl Write for Stderr[src]

impl Write for &Stderr1.48.0[src]

Auto Trait Implementations

impl RefUnwindSafe for Stderr

impl Send for Stderr

impl Sync for Stderr

impl Unpin for Stderr

impl UnwindSafe for Stderr

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized

impl<T> Borrow<T> for T where
    T: ?Sized

impl<T> BorrowMut<T> for T where
    T: ?Sized

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.