[−][src]Function tracing::subscriber::set_default
#[must_use = "Dropping the guard unregisters the subscriber."]pub fn set_default<S>(subscriber: S) -> DefaultGuard where
S: Subscriber + Send + Sync + 'static,
Sets the subscriber as the default for the duration of the lifetime of the
returned DefaultGuard
The default subscriber is used when creating a new Span
or
Event
, if no span is currently executing. If a span is currently
executing, new spans or events are dispatched to the subscriber that
tagged that span, instead.