Struct `Stderr`

pub struct Stderr { /* private fields */ }

A handle to the standard error stream of a process.

Concurrent writes to stderr must be executed with care: Only individual writes to this AsyncWrite are guaranteed to be intact. In particular you should be aware that writes using write_all are not guaranteed to occur as a single write, so multiple threads writing data with write_all may result in interleaved output.

Created by the stderr function.

Examples

use tokio::io::{self, AsyncWriteExt};

#[tokio::main]
async fn main() -> io::Result<()> {
    let mut stderr = io::stderr();
    stderr.write_all(b"Print some error here.").await?;
    Ok(())
}

Trait Implementations

`impl AsFd for Stderr`

fn as_fd(&self) -> BorrowedFd<'_>

`impl AsRawFd for Stderr`

fn as_raw_fd(&self) -> RawFd

`impl AsyncWrite for Stderr`

fn poll_write(self: Pin<&mut Self>, cx: &mut Context<'_>, buf: &[u8]) -> Poll<Result<usize>>
fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Error>>
fn poll_shutdown(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Error>>

`impl Debug for Stderr`

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Auto Trait Implementations

`impl Freeze for Stderr`

`impl RefUnwindSafe for Stderr`

`impl Send for Stderr`

`impl Sync for Stderr`

`impl Unpin for Stderr`

`impl UnsafeUnpin for Stderr`

`impl UnwindSafe for Stderr`

Blanket Implementations

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

fn type_id(&self) -> TypeId

`impl<T> Borrow<T> for Stderr where T: ?Sized,`

fn borrow(&self) -> &T

`impl<T> BorrowMut<T> for Stderr where T: ?Sized,`

fn borrow_mut(&mut self) -> &mut T

`impl<T> From<T> for Stderr`

fn from(t: T) -> T: Returns the argument unchanged.

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

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

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

type Error = never;
fn try_from(value: U) -> Result<T, never>

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

type Error = >::Error;
fn try_into(self) -> Result<U, >::Error>