pub struct StdoutLock<'a> { /* private fields */ }
Expand description
A locked reference to the Stdout
handle.
This handle implements the Write
trait, and is constructed via
the Stdout::lock
method. See its documentation for more.
By default, the handle is line-buffered when connected to a terminal, meaning
it flushes automatically when a newline (\n
) is encountered. For immediate
output, you can manually call the flush
method. When the handle goes out
of scope, the buffer is automatically flushed.
§Note: Windows Portability Considerations
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.
In a process with a detached console, such as one using
#![windows_subsystem = "windows"]
, or in a child process spawned from such a process,
the contained handle will be null. In such cases, the standard library’s Read
and
Write
will do nothing and silently succeed. All other I/O operations, via the
standard library or via raw Windows API calls, will fail.
Trait Implementations§
1.63.0 · Source§impl<'a> AsFd for StdoutLock<'a>
impl<'a> AsFd for StdoutLock<'a>
Source§fn as_fd(&self) -> BorrowedFd<'_>
fn as_fd(&self) -> BorrowedFd<'_>
1.63.0 · Source§impl<'a> AsHandle for StdoutLock<'a>
Available on Windows only.
impl<'a> AsHandle for StdoutLock<'a>
Source§fn as_handle(&self) -> BorrowedHandle<'_>
fn as_handle(&self) -> BorrowedHandle<'_>
1.35.0 · Source§impl<'a> AsRawFd for StdoutLock<'a>
impl<'a> AsRawFd for StdoutLock<'a>
1.35.0 · Source§impl<'a> AsRawHandle for StdoutLock<'a>
Available on Windows only.
impl<'a> AsRawHandle for StdoutLock<'a>
Source§fn as_raw_handle(&self) -> RawHandle
fn as_raw_handle(&self) -> RawHandle
1.16.0 · Source§impl Debug for StdoutLock<'_>
impl Debug for StdoutLock<'_>
1.70.0 · Source§impl IsTerminal for StdoutLock<'_>
impl IsTerminal for StdoutLock<'_>
Source§fn is_terminal(&self) -> bool
fn is_terminal(&self) -> bool
true
if the descriptor/handle refers to a terminal/tty. Read more1.0.0 · Source§impl Write for StdoutLock<'_>
impl Write for StdoutLock<'_>
Source§fn write(&mut self, buf: &[u8]) -> Result<usize>
fn write(&mut self, buf: &[u8]) -> Result<usize>
Source§fn is_write_vectored(&self) -> bool
fn is_write_vectored(&self) -> bool
can_vector
#69941)Source§fn flush(&mut self) -> Result<()>
fn flush(&mut self) -> Result<()>
Source§fn write_all(&mut self, buf: &[u8]) -> Result<()>
fn write_all(&mut self, buf: &[u8]) -> Result<()>
Source§fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<()>
fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<()>
write_all_vectored
#70436)