Struct Intern 

pub struct Intern<K: EntityRef, V> { /* private fields */ }

A helper structure to “intern” and deduplicate values of type V with an identifying key K.

Note that this can also be used where V can’t be intern’d to represent a flat list of items.

Implementations

impl<K, V> Intern<K, V>

where K: EntityRef,

pub fn push(&mut self, value: V) -> K

where V: Hash + Eq + Clone,

Inserts the value specified into this set, returning either a fresh key K if this value hasn’t been seen before or otherwise returning the previous K used to represent value.

Note that this should only be used for component model items where the creation of value is not side-effectful.

pub fn iter(&self) -> impl Iterator<Item = (K, &V)>

Returns an iterator of all the values contained within this set.

Trait Implementations

impl<K: EntityRef, V> Default for Intern<K, V>

fn default() -> Intern<K, V>

Returns the “default value” for a type.

impl<K: EntityRef, V> Index<K> for Intern<K, V>

type Output = V

The returned type after indexing.

fn index(&self, key: K) -> &V

Performs the indexing (container[index]) operation.