Enum JoinFields 

pub enum JoinFields {
    Overwrite,
    All(&'static str),
    Some(&'static str, &'static [&'static str]),
}

Join fields with characters

Variants

Overwrite

All nested span fields will overwrite parent span fields

All(&'static str)

All nested span fields will join with parent spans e.g JoinFields::All(“::”)

Some(&'static str, &'static [&'static str])

Only declared nested span fields will join with parent spans e.g. JoinFields(Some(“::”, &[“field_a”, “field_b”]))

Trait Implementations

impl Clone for JoinFields

fn clone(&self) -> JoinFields

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for JoinFields

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

Formats the value using the given formatter.

impl Default for JoinFields

fn default() -> JoinFields

Returns the “default value” for a type.

impl Copy for JoinFields