[−][src]Struct tracing::field::Empty

pub struct Empty;

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

`impl Debug for Empty`[src]

`fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>`[src]

`impl Eq for Empty`[src]

`impl PartialEq<Empty> for Empty`[src]

`fn eq(&self, other: &Empty) -> bool`[src]

`#[must_use]fn ne(&self, other: &Rhs) -> bool`1.0.0[src]

`impl StructuralEq for Empty`[src]

`impl StructuralPartialEq for Empty`[src]

`impl Value for Empty`[src]

`fn record(&self, &Field, &mut dyn Visit)`[src]

Auto Trait Implementations

`impl RefUnwindSafe for Empty`

`impl Send for Empty`

`impl Sync for Empty`

`impl Unpin for Empty`

`impl UnwindSafe for Empty`

Blanket Implementations

`impl<T> Any for T where T: 'static + ?Sized,` [src]

`fn type_id(&self) -> TypeId`[src]

`impl<T> Borrow<T> for T where T: ?Sized,` [src]

`fn borrow(&self) -> &T`[src]

`impl<T> BorrowMut<T> for T where T: ?Sized,` [src]

`fn borrow_mut(&mut self) -> &mut T`[src]

`impl<T> From<T> for T`[src]

`fn from(t: T) -> T`[src]

`impl<T> Instrument for T`[src]

`fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T> impl<T: Future> Future for Instrumented<T> type Output = T::Output;`[src]

`fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T> impl<T: Future> Future for Instrumented<T> type Output = T::Output;`[src]

`impl<T, U> Into for T where U: From<T>,` [src]

`fn into(self) -> U`[src]

`impl<T, U> TryFrom for T where U: Into<T>,` [src]

`type Error = Infallible`

The type returned in the event of a conversion error.

`fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>`[src]

`impl<T, U> TryInto for T where U: TryFrom<T>,` [src]

`type Error = >::Error`

The type returned in the event of a conversion error.

`fn try_into(self) -> Result<U, >::Error>`[src]

[−][src]Struct tracing::field::Empty

Trait Implementations

`impl Debug for Empty`[src]

`fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>`[src]

`impl Eq for Empty`[src]

`impl PartialEq<Empty> for Empty`[src]

`fn eq(&self, other: &Empty) -> bool`[src]

`#[must_use]fn ne(&self, other: &Rhs) -> bool`1.0.0[src]

`impl StructuralEq for Empty`[src]

`impl StructuralPartialEq for Empty`[src]

`impl Value for Empty`[src]

`fn record(&self, &Field, &mut dyn Visit)`[src]

Auto Trait Implementations

`impl RefUnwindSafe for Empty`

`impl Send for Empty`

`impl Sync for Empty`

`impl Unpin for Empty`

`impl UnwindSafe for Empty`

Blanket Implementations

`impl<T> Any for T where T: 'static + ?Sized,` [src]

`fn type_id(&self) -> TypeId`[src]

`impl<T> Borrow<T> for T where T: ?Sized,` [src]

`fn borrow(&self) -> &T`[src]

`impl<T> BorrowMut<T> for T where T: ?Sized,` [src]

`fn borrow_mut(&mut self) -> &mut T`[src]

`impl<T> From<T> for T`[src]

`fn from(t: T) -> T`[src]

`impl<T> Instrument for T`[src]

`fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T> impl<T: Future> Future for Instrumented<T> type Output = T::Output;`[src]

Notable traits for Instrumented<T>

`fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T> impl<T: Future> Future for Instrumented<T> type Output = T::Output;`[src]

Notable traits for Instrumented<T>

`impl<T, U> Into<U> for T where U: From<T>,` [src]

`fn into(self) -> U`[src]

`impl<T, U> TryFrom<U> for T where U: Into<T>,` [src]

`type Error = Infallible`

`fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>`[src]

`impl<T, U> TryInto<U> for T where U: TryFrom<T>,` [src]

`type Error = <U as TryFrom<T>>::Error`

`fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>`[src]

[−][src]Struct tracing::field::Empty

Trait Implementations

impl Debug for Empty[src]

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>[src]

impl Eq for Empty[src]

impl PartialEq<Empty> for Empty[src]

fn eq(&self, other: &Empty) -> bool[src]

#[must_use]fn ne(&self, other: &Rhs) -> bool1.0.0[src]

impl StructuralEq for Empty[src]

impl StructuralPartialEq for Empty[src]

impl Value for Empty[src]

fn record(&self, &Field, &mut dyn Visit)[src]

Auto Trait Implementations

impl RefUnwindSafe for Empty

impl Send for Empty

impl Sync for Empty

impl Unpin for Empty

impl UnwindSafe for Empty

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized, [src]

fn type_id(&self) -> TypeId[src]

impl<T> Borrow<T> for T where T: ?Sized, [src]

fn borrow(&self) -> &T[src]

impl<T> BorrowMut<T> for T where T: ?Sized, [src]

fn borrow_mut(&mut self) -> &mut T[src]

impl<T> From<T> for T[src]

fn from(t: T) -> T[src]

impl<T> Instrument for T[src]

fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T: Future> Future for Instrumented<T> type Output = T::Output;[src]

Notable traits for Instrumented<T>

fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T: Future> Future for Instrumented<T> type Output = T::Output;[src]

Notable traits for Instrumented<T>

impl<T, U> Into<U> for T where U: From<T>, [src]

fn into(self) -> U[src]

impl<T, U> TryFrom<U> for T where U: Into<T>, [src]

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]

impl<T, U> TryInto<U> for T where U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]

`impl Debug for Empty`[src]

`fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>`[src]

`impl Eq for Empty`[src]

`impl PartialEq<Empty> for Empty`[src]

`fn eq(&self, other: &Empty) -> bool`[src]

`#[must_use]fn ne(&self, other: &Rhs) -> bool`1.0.0[src]

`impl StructuralEq for Empty`[src]

`impl StructuralPartialEq for Empty`[src]

`impl Value for Empty`[src]

`fn record(&self, &Field, &mut dyn Visit)`[src]

`impl RefUnwindSafe for Empty`

`impl Send for Empty`

`impl Sync for Empty`

`impl Unpin for Empty`

`impl UnwindSafe for Empty`

`impl<T> Any for T where T: 'static + ?Sized,` [src]

`fn type_id(&self) -> TypeId`[src]

`impl<T> Borrow<T> for T where T: ?Sized,` [src]

`fn borrow(&self) -> &T`[src]

`impl<T> BorrowMut<T> for T where T: ?Sized,` [src]

`fn borrow_mut(&mut self) -> &mut T`[src]

`impl<T> From<T> for T`[src]

`fn from(t: T) -> T`[src]

`impl<T> Instrument for T`[src]

`fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T> impl<T: Future> Future for Instrumented<T> type Output = T::Output;`[src]

`fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T> impl<T: Future> Future for Instrumented<T> type Output = T::Output;`[src]

`impl<T, U> Into<U> for T where U: From<T>,` [src]

`fn into(self) -> U`[src]

`impl<T, U> TryFrom<U> for T where U: Into<T>,` [src]

`type Error = Infallible`

`fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>`[src]

`impl<T, U> TryInto<U> for T where U: TryFrom<T>,` [src]

`type Error = <U as TryFrom<T>>::Error`

`fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>`[src]