Struct BoxedSlice

pub struct BoxedSlice<K, V>
where
    K: EntityRef,
{
    elems: Box<[V]>,
    unused: PhantomData<K>,
}

A slice mapping K -> V allocating dense entity references.

The BoxedSlice data structure uses the dense index space to implement a map with a boxed slice.

Fields

elems: Box<[V]>

unused: PhantomData<K>

Implementations

impl<K, V> BoxedSlice<K, V>

where K: EntityRef,

pub unsafe fn from_raw(raw: *mut [V]) -> Self

Create a new slice from a raw pointer. A safer way to create slices is to use PrimaryMap::into_boxed_slice().

Safety

This relies on raw pointing to a valid slice of Vs.

pub fn is_valid(&self, k: K) -> bool

Check if k is a valid key in the map.

pub fn get(&self, k: K) -> Option<&V>

Get the element at k if it exists.

pub fn get_mut(&mut self, k: K) -> Option<&mut V>

Get the element at k if it exists, mutable version.

pub fn is_empty(&self) -> bool

Is this map completely empty?

pub fn len(&self) -> usize

Get the total number of entity references created.

pub fn keys(&self) -> Keys<K>

Iterate over all the keys in this map.

pub fn values(&self) -> Iter<'_, V>

Iterate over all the values in this map.

pub fn values_mut(&mut self) -> IterMut<'_, V>

Iterate over all the values in this map, mutable edition.

pub fn iter(&self) -> Iter<'_, K, V>

Iterate over all the keys and values in this map.

pub fn iter_mut(&mut self) -> IterMut<'_, K, V>

Iterate over all the keys and values in this map, mutable edition.

pub fn last(&self) -> Option<&V>

Returns the last element that was inserted in the map.

Trait Implementations

impl<K, V: Clone> Clone for BoxedSlice<K, V>

where K: EntityRef + Clone,

fn clone(&self) -> BoxedSlice<K, V>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<K, V: Debug> Debug for BoxedSlice<K, V>

where K: EntityRef + Debug,

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

Formats the value using the given formatter.

impl<K, V> Index<K> for BoxedSlice<K, V>

where K: EntityRef,

Immutable indexing into a BoxedSlice. The indexed value must be in the map.

type Output = V

The returned type after indexing.

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

Performs the indexing (container[index]) operation.

impl<K, V> IndexMut<K> for BoxedSlice<K, V>

where K: EntityRef,

Mutable indexing into a BoxedSlice.

fn index_mut(&mut self, k: K) -> &mut V

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

impl<'a, K, V> IntoIterator for &'a BoxedSlice<K, V>

where K: EntityRef,

type Item = (K, &'a V)

The type of the elements being iterated over.

type IntoIter = Iter<'a, K, V>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl<'a, K, V> IntoIterator for &'a mut BoxedSlice<K, V>

where K: EntityRef,

type Item = (K, &'a mut V)

The type of the elements being iterated over.

type IntoIter = IterMut<'a, K, V>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.