Struct SecondarySlotVec

pub struct SecondarySlotVec<Tag: ?Sized, Val> { /* private fields */ }

A secondary map used to associated data with keys from elements in an existing SlotVec.

Analogous to slotmap::SecondaryMap.

Implementations

impl<Tag: ?Sized, Val> SecondarySlotVec<Tag, Val>

pub const fn new() -> Self

Creates a new SecondarySlotVec.

pub fn insert(&mut self, key: Key<Tag>, value: Val) -> Option<Val>

Inserts a value into the SecondarySlotVec and returns the previous value associated with the key.

pub fn remove(&mut self, key: Key<Tag>) -> Option<Val>

Removes a value associated with the key from the SecondarySlotVec and returns it.

pub fn get(&self, key: Key<Tag>) -> Option<&Val>

Returns a reference to the value associated with the key.

pub fn get_mut(&mut self, key: Key<Tag>) -> Option<&mut Val>

Returns a mutable reference to the value associated with the key.

pub fn get_or_insert_with( &mut self, key: Key<Tag>, default: impl FnOnce() -> Val, ) -> &mut Val

Returns a mutable reference to the value associated with the key, inserting a default value if it doesn’t yet exist.

pub fn iter( &self, ) -> impl DoubleEndedIterator<Item = (Key<Tag>, &Val)> + FusedIterator + Clone

Iterate the key-value pairs, where the value is a shared reference.

pub fn iter_mut( &mut self, ) -> impl DoubleEndedIterator<Item = (Key<Tag>, &mut Val)> + FusedIterator

Iterate the key-value pairs, where the value is a exclusive reference.

pub fn values( &self, ) -> impl DoubleEndedIterator<Item = &Val> + FusedIterator + Clone

Iterate over the values by shared reference.

pub fn values_mut( &mut self, ) -> impl DoubleEndedIterator<Item = &mut Val> + FusedIterator

Iterate over the values by exclusive reference.

pub fn keys( &self, ) -> impl '_ + DoubleEndedIterator<Item = Key<Tag>> + FusedIterator + Clone

Iterate over the keys.

Trait Implementations

impl<Tag: ?Sized, Val> Default for SecondarySlotVec<Tag, Val>

fn default() -> Self

Returns the “default value” for a type.

impl<Tag: ?Sized, Val> Index<Key<Tag>> for SecondarySlotVec<Tag, Val>

type Output = Val

The returned type after indexing.

fn index(&self, key: Key<Tag>) -> &Self::Output

Performs the indexing (container[index]) operation.

impl<Tag: ?Sized, Val> IndexMut<Key<Tag>> for SecondarySlotVec<Tag, Val>

fn index_mut(&mut self, key: Key<Tag>) -> &mut Self::Output

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