Enum tracing_subscriber::fmt::writer::EitherWriter
source · [−]pub enum EitherWriter<A, B> {
A(A),
B(B),
}
Expand description
A writer that is one of two types implementing io::Write
.
This may be used by MakeWriter
implementations that may conditionally
return one of two writers.
Variants
A(A)
A writer of type A
.
B(B)
A writer of type B
.
Implementations
sourceimpl<T> EitherWriter<T, Sink>
impl<T> EitherWriter<T, Sink>
sourcepub fn none() -> Self
pub fn none() -> Self
Returns a disabled writer.
Any bytes written to the returned writer are discarded.
This is equivalent to returning Option::None
.
sourcepub fn some(t: T) -> Self
pub fn some(t: T) -> Self
Returns an enabled writer of type T
.
This is equivalent to returning Option::Some
.
Trait Implementations
sourceimpl<A: Clone, B: Clone> Clone for EitherWriter<A, B>
impl<A: Clone, B: Clone> Clone for EitherWriter<A, B>
sourcefn clone(&self) -> EitherWriter<A, B>ⓘNotable traits for EitherWriter<A, B>impl<A, B> Write for EitherWriter<A, B> where
A: Write,
B: Write,
fn clone(&self) -> EitherWriter<A, B>ⓘNotable traits for EitherWriter<A, B>impl<A, B> Write for EitherWriter<A, B> where
A: Write,
B: Write,
A: Write,
B: Write,
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl<A: Debug, B: Debug> Debug for EitherWriter<A, B>
impl<A: Debug, B: Debug> Debug for EitherWriter<A, B>
sourceimpl<A: PartialEq, B: PartialEq> PartialEq<EitherWriter<A, B>> for EitherWriter<A, B>
impl<A: PartialEq, B: PartialEq> PartialEq<EitherWriter<A, B>> for EitherWriter<A, B>
sourcefn eq(&self, other: &EitherWriter<A, B>) -> bool
fn eq(&self, other: &EitherWriter<A, B>) -> bool
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
sourcefn ne(&self, other: &EitherWriter<A, B>) -> bool
fn ne(&self, other: &EitherWriter<A, B>) -> bool
This method tests for !=
.
sourceimpl<A, B> Write for EitherWriter<A, B> where
A: Write,
B: Write,
impl<A, B> Write for EitherWriter<A, B> where
A: Write,
B: Write,
sourcefn write(&mut self, buf: &[u8]) -> Result<usize>
fn write(&mut self, buf: &[u8]) -> Result<usize>
Write a buffer into this writer, returning how many bytes were written. Read more
sourcefn flush(&mut self) -> Result<()>
fn flush(&mut self) -> Result<()>
Flush this output stream, ensuring that all intermediately buffered contents reach their destination. Read more
sourcefn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize>
fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize>
sourcefn write_all(&mut self, buf: &[u8]) -> Result<()>
fn write_all(&mut self, buf: &[u8]) -> Result<()>
Attempts to write an entire buffer into this writer. Read more
sourcefn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<()>
fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<()>
Writes a formatted string into this writer, returning any error encountered. Read more
sourcefn is_write_vectored(&self) -> bool
fn is_write_vectored(&self) -> bool
Determines if this Write
r has an efficient write_vectored
implementation. Read more
impl<A: Copy, B: Copy> Copy for EitherWriter<A, B>
impl<A: Eq, B: Eq> Eq for EitherWriter<A, B>
impl<A, B> StructuralEq for EitherWriter<A, B>
impl<A, B> StructuralPartialEq for EitherWriter<A, B>
Auto Trait Implementations
impl<A, B> RefUnwindSafe for EitherWriter<A, B> where
A: RefUnwindSafe,
B: RefUnwindSafe,
impl<A, B> Send for EitherWriter<A, B> where
A: Send,
B: Send,
impl<A, B> Sync for EitherWriter<A, B> where
A: Sync,
B: Sync,
impl<A, B> Unpin for EitherWriter<A, B> where
A: Unpin,
B: Unpin,
impl<A, B> UnwindSafe for EitherWriter<A, B> where
A: UnwindSafe,
B: UnwindSafe,
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
sourcefn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
sourceimpl<T> WithSubscriber for T
impl<T> WithSubscriber for T
sourcefn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
sourcefn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more