1use super::QueryDatabase; 2 3impl<'a, Querier> QueryDatabase<'a, Querier> { 4 /// The number of queriers within the database. 5 pub fn len(&self) -> usize { 6 self.internal.len() 7 } 8 9 /// Whether the database is empty. 10 pub fn is_empty(&self) -> bool { 11 self.internal.is_empty() 12 } 13}