fn active_database_name(&self) -> Option<&str> {
        self.active_database()
            .map(|id| self.get_database(id))
            .map(|db| db.name())
    }
/// Returns the database to use if one is not explicitly specified.
Returns the database to use if one is not explicitly specified.
Returns the database to use if one is not explicitly specified .
fn active_database_name(&self) -> Option<&str> {
        self.active_database()
            .map(|id| self.get_database(id))
            .map(|db| db.name())
    }
fn active_database_name ( & self ) -> Option < & str > { self . active_database ( ) . map ( | id | self . get_database ( id ) ) . map ( | db | db . name ( ) ) }
Returns the database to use if one is not explicitly specified.
Returns the database to use if one is not explicitly specified .
&self
&self