Struct tracing::field::Empty [−][src]
pub struct Empty;
Expand description
An empty field.
This can be used to indicate that the value of a field is not currently present but will be recorded later.
When a field’s value is Empty
. it will not be recorded.
Trait Implementations
Auto Trait Implementations
impl RefUnwindSafe for Empty
impl UnwindSafe for Empty
Blanket Implementations
Mutably borrows from an owned value. Read more
fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T: Future> Future for Instrumented<T> type Output = T::Output;
fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T: Future> Future for Instrumented<T> type Output = T::Output;
Notable traits for Instrumented<T>
impl<T: Future> Future for Instrumented<T> type Output = T::Output;
Instruments this type with the provided Span
, returning an
Instrumented
wrapper. Read more
fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T: Future> Future for Instrumented<T> type Output = T::Output;
fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T: Future> Future for Instrumented<T> type Output = T::Output;
Notable traits for Instrumented<T>
impl<T: Future> Future for Instrumented<T> type Output = T::Output;