Struct NodeIndex 

pub struct NodeIndex { /* private fields */ }

节点索引：稳定引用节点的句柄

包含槽位索引和 generation 计数，确保删除后不会错误访问新节点

Implementations

impl NodeIndex

pub fn index(&self) -> usize

获取槽位索引

pub fn generation(&self) -> u32

获取 generation 计数

Trait Implementations

impl Clone for NodeIndex

fn clone(&self) -> NodeIndex

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for NodeIndex

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for NodeIndex

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for NodeIndex

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for NodeIndex

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T, E> Index<NodeIndex> for Graph<T, E>

type Output = T

The returned type after indexing.

fn index(&self, index: NodeIndex) -> &Self::Output

Performs the indexing (container[index]) operation.

impl<T, E> IndexMut<NodeIndex> for Graph<T, E>

Safety

此实现使用 panic! 而非 Result，因为 IndexMut trait 不允许返回 Result。 对于需要安全访问的场景，请使用 get_node_mut() 方法。

Panics

Panics if:

• 节点索引超出范围 (index.index() >= self.nodes.len())
• 节点已被删除 (slot.is_occupied() == false)
• Generation 不匹配，索引已失效

示例

use god_gragh::graph::{Graph, traits::GraphOps};

let mut graph = Graph::<i32, f64>::directed();
let node = graph.add_node(42).unwrap();
graph.remove_node(node).unwrap();

// 这将 panic，因为节点已被删除
graph[node] = 100;

fn index_mut(&mut self, index: NodeIndex) -> &mut Self::Output

Performs the mutable indexing (container[index]) operation.

impl Ord for NodeIndex

fn cmp(&self, other: &NodeIndex) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for NodeIndex

fn eq(&self, other: &NodeIndex) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for NodeIndex

fn partial_cmp(&self, other: &NodeIndex) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for NodeIndex

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for NodeIndex

impl Eq for NodeIndex

impl StructuralPartialEq for NodeIndex