Struct tracing_core::field::Empty[][src]

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]

impl Eq for Empty[src]

impl PartialEq<Empty> for Empty[src]

impl StructuralEq for Empty[src]

impl StructuralPartialEq for Empty[src]

impl Value for Empty[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
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impl<T> Borrow<T> for T where
    T: ?Sized
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impl<T> BorrowMut<T> for T where
    T: ?Sized
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impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
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impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
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type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.