pub trait DirectedGraphNode<K: Key, T> {
// Required methods
fn from_len(&self) -> usize;
fn to_len(&self) -> usize;
fn from(&self) -> &[K];
fn to(&self) -> &[K];
fn key(&self) -> &K;
fn value(&self) -> &T;
fn value_mut(&mut self) -> &mut T;
}Expand description
有向无环图 节点