Enum BoxStorage 

pub enum BoxStorage {}

Storage that stores values in boxes.

Memory Efficiency

Vastly more memory-efficient than inline storage: heaptrack suggests on the order of 5x better.

Notably, size_of::<Box<T>>() is always a single usize, while an inline Node is 2 Array256es, which are comparatively large (256-bit bitset + vec -> ~7x larger up to alignment on a 64-bit arch). Suspect the large overhead for inline storage is mostly due to the powers-of-two oversizing of the Node::children Vec storage: this is going to be costly in direct proportion to the size of the contained value.

Trait Implementations

impl Clone for BoxStorage

fn clone(&self) -> BoxStorage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BoxStorage

impl Debug for BoxStorage

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

Formats the value using the given formatter.

impl Eq for BoxStorage

impl Hash for BoxStorage

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 Ord for BoxStorage

fn cmp(&self, other: &BoxStorage) -> 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 BoxStorage

fn eq(&self, other: &BoxStorage) -> 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 BoxStorage

fn partial_cmp(&self, other: &BoxStorage) -> 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 Storage for BoxStorage

type Container<T> = Box<T>

The container type used to hold the value type.

fn new<T>(t: T) -> Self::Container<T>

Construct a new container.

fn into_inner<T>(container: Self::Container<T>) -> T

Destruct the container to retrieve the contained value.

fn as_ref<T>(container: &Self::Container<T>) -> &T

Retrieve a reference to the contained value.

fn as_mut<T>(container: &mut Self::Container<T>) -> &mut T

Retrieve a mutable reference to the contained value.

fn clone<T>(container: &Self::Container<T>) -> Self::Container<T>

where T: Clone,

Clone the container.

impl StructuralPartialEq for BoxStorage