std::io::Stderr - Rust
Description: API documentation for the Rust `Stderr` struct in crate `std`.
Keywords: rust, rustlang, rust-lang, Stderr

# Struct std::io::Stderr 1.0.0 [−] [src]

    pub struct Stderr { /* fields omitted */ }

A handle to the standard error stream of a process.

For more information, see the `io::stderr` method.

## Methods

### `impl Stderr`
[src]

#### `fn lock(&self) -> 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.

# Examples

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

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

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

        Ok(())
    }Run

## Trait Implementations

### `impl Debug for Stderr`
1.15.0
[src]

#### `fn fmt(&self, f: &mut Formatter) -> Result`

Formats the value using the given formatter.

### `impl Write for Stderr`
[src]

#### `fn write(&mut self, buf: &[u8]) -> Result<usize>`

Write a buffer into this object, returning how many bytes were written. Read more

#### `fn flush(&mut self) -> Result<()>`

Flush this output stream, ensuring that all intermediately buffered contents reach their destination. Read more

#### `fn write_all(&mut self, buf: &[u8]) -> Result<()>`

Attempts to write an entire buffer into this write. Read more

#### `fn write_fmt(&mut self, args: Arguments) -> Result<()>`

Writes a formatted string into this writer, returning any error encountered. Read more

#### `fn by_ref(&mut self) -> &mut Self where Self: Sized`

Creates a "by reference" adaptor for this instance of `Write`. Read more

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