Method goto_first

cranelift/bforest/src/map.rs:382–388

(
        &mut self,
        root: &PackedOption<Node>,
        pool: &NodePool<MapTypes<K, V>>,
    )

    }

    fn goto_first(
        &mut self,
        root: &PackedOption<Node>,
        pool: &NodePool<MapTypes<K, V>>,
    ) -> Option<V> {
        root.map(|root| self.path.first(root, pool).1)
    }

    fn goto_end(&mut self) {
        self.path = Path::default();