fn select_closest_nodes(
        &self,
        to: &Node,
        known_nodes: &BTreeMap<Id, Node>,
        max: usize,
    ) -> BTreeMap<Id, Node> {
        let mut profiles: Vec<_> = known_nodes.values().collect();

        profiles.sort_by(|left, right| to.proximity(left).cmp(&to.proximity(right)));

        profiles
            .into_iter()
            .map(|v| (*v.id(), v.clone()))
            .take(max)
            .collect()
    }
/// select nodes based on the proximity function (see Profile's proximity
/// member function).
select nodes based on the proximity function (see Profile's proximity
member function).
select nodes based on the proximity function ( see Profile ' s proximity member function ) .
fn select_closest_nodes(
        &self,
        to: &Node,
        known_nodes: &BTreeMap<Id, Node>,
        max: usize,
    ) -> BTreeMap<Id, Node> {
        let mut profiles: Vec<_> = known_nodes.values().collect();
        profiles.sort_by(|left, right| to.proximity(left).cmp(&to.proximity(right)));
        profiles
            .into_iter()
            .map(|v| (*v.id(), v.clone()))
            .take(max)
            .collect()
    }
fn select_closest_nodes ( & self , to : & Node , known_nodes : & BTreeMap < Id , Node > , max : usize , ) -> BTreeMap < Id , Node > { let mut profiles : Vec < _ > = known_nodes . values ( ) . collect ( ) ; profiles . sort_by ( | left , right | to . proximity ( left ) . cmp ( & to . proximity ( right ) ) ) ; profiles . into_iter ( ) . map ( | v | ( * v . id ( ) , v . clone ( ) ) ) . take ( max ) . collect ( ) }
select nodes based on the proximity function (see Profile's proximity
member function).
select nodes based on the proximity function ( see Profile ' s proximity member function ) .
&self
to
&Node
known_nodes
&BTreeMap<Id, Node>
max
usize