Struct tracing_core::span::Record

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pub struct Record<'a> {
    values: &'a ValueSet<'a>,
}
Expand description

A set of fields recorded by a span.

Fields§

§values: &'a ValueSet<'a>

Implementations§

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impl<'a> Record<'a>

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pub fn new(values: &'a ValueSet<'a>) -> Self

Constructs a new Record from a ValueSet.

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pub fn record(&self, visitor: &mut dyn Visit)

Records all the fields in this Record with the provided Visitor.

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pub fn contains(&self, field: &Field) -> bool

Returns true if this Record contains a value for the given Field.

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pub fn is_empty(&self) -> bool

Returns true if this Record contains no values.

Trait Implementations§

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impl<'a> Debug for Record<'a>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a> !RefUnwindSafe for Record<'a>

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impl<'a> !Send for Record<'a>

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impl<'a> !Sync for Record<'a>

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impl<'a> Unpin for Record<'a>

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impl<'a> !UnwindSafe for Record<'a>

Blanket Implementations§

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impl<T> Any for Twhere
    T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere
    T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere
    T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere
    U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for Twhere
    U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

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

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere
    U: TryFrom<T>,

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

The type returned in the event of a conversion error.
const: unstable · source§

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

Performs the conversion.