Struct generational_arena::Index

pub struct Index { /* fields omitted */ }

An index (and generation) into an Arena.

To get an Index, insert an element into an Arena, and the Index for that element will be returned.

Examples

use generational_arena::Arena;

let mut arena = Arena::new();
let idx = arena.insert(123);
assert_eq!(arena[idx], 123);

Trait Implementations

impl Debug for Index

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

Formats the value using the given formatter.

impl PartialEq<Index> for Index

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Eq for Index

impl Ord for Index

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

impl PartialOrd<Index> for Index

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl Hash for Index

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, 

Feeds a slice of this type into the given [Hasher].

impl Copy for Index

impl<T> Index<Index> for Arena<T>

type Output = T

The returned type after indexing.

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

Performs the indexing (container[index]) operation.

impl<T> IndexMut<Index> for Arena<T>

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

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

impl Clone for Index

fn clone(&self) -> Index

Returns a copy of the value.

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

Performs copy-assignment from source.