Module tracing::field [−][src]
Expand description
Structured data associated with Span
s and Event
s.
Structs
A Value
which serializes as a string using fmt::Debug
.
A Value
which serializes using fmt::Display
.
An empty field.
An opaque key allowing O(1) access to a field in a Span
’s key-value
data.
Describes the fields present on a span.
An iterator over a set of fields.
A set of fields and values for a span.
Traits
Trait implemented to allow a type to be used as a field key.
A field value of an erased type.
Visits typed values.