1.0.0[−][src]Struct std::io::Stderr
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.
Methods
impl Stderr
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ⓘImportant traits for StderrLock<'_>pub fn lock(&self) -> StderrLock
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ⓘImportant traits 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.
Examples
use std::io::{self, Write}; fn foo() -> io::Result<()> { let stderr = io::stderr(); let mut handle = stderr.lock(); handle.write_all(b"hello world")?; Ok(()) }Run
Trait Implementations
impl Write for Stderr
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fn write(&mut self, buf: &[u8]) -> Result<usize>
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fn write_vectored(&mut self, bufs: &[IoSlice]) -> Result<usize>
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fn flush(&mut self) -> Result<()>
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fn write_all(&mut self, buf: &[u8]) -> Result<()>
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fn write_fmt(&mut self, args: Arguments) -> Result<()>
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ⓘImportant traits for &'_ mut Ffn by_ref(&mut self) -> &mut Self where
Self: Sized,
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ⓘImportant traits for &'_ mut F
Self: Sized,
impl AsRawFd for Stderr
1.21.0[src]
impl AsRawHandle for Stderr
1.21.0[src]
fn as_raw_handle(&self) -> RawHandle
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impl Debug for Stderr
1.16.0[src]
Auto Trait Implementations
impl UnwindSafe for Stderr
impl RefUnwindSafe for Stderr
impl Unpin for Stderr
impl Send for Stderr
impl Sync for Stderr
Blanket Implementations
impl<T> From<T> for T
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
ⓘImportant traits for &'_ mut Ffn borrow_mut(&mut self) -> &mut T
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ⓘImportant traits for &'_ mut F
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,