Struct tracing_core::field::ValueSet

pub struct ValueSet<'a> {
    values: &'a [(&'a Field, Option<&'a (dyn Value + 'a)>)],
    fields: &'a FieldSet,
}

A set of fields and values for a span.

Fields

values: &'a [(&'a Field, Option<&'a (dyn Value + 'a)>)]

fields: &'a FieldSet

Implementations

impl<'a> ValueSet<'a>

pub fn callsite(&self) -> Identifier

Returns an Identifier that uniquely identifies the Callsite defining the fields this ValueSet refers to.

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

Visits all the fields in this ValueSet with the provided visitor.

pub fn len(&self) -> usize

Returns the number of fields in this ValueSet that would be visited by a given visitor to the ValueSet::record() method.

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

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

pub fn is_empty(&self) -> bool

Returns true if this ValueSet contains no values.

pub(crate) fn field_set(&self) -> &FieldSet

Trait Implementations

impl<'a> Debug for ValueSet<'a>

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

Formats the value using the given formatter.

impl<'a> Display for ValueSet<'a>

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

Formats the value using the given formatter.