Struct PoolHandle 

pub struct PoolHandle { /* private fields */ }

A reference to one object in a pool. Copyable and small: pass it around instead of the object.

The generation is what makes a handle to a removed object read as absent rather than silently addressing whatever took its slot.

Implementations

impl PoolHandle

pub const fn from_parts(index: u32, generation: u32) -> Self

Rebuild a handle from parts a caller stored elsewhere.

Parts that never named a live object read as absent, exactly as a stale handle does, so this widens no access the pool did not grant.

pub const fn index(self) -> usize

Position in the pool, for a caller keeping a table alongside it.

pub const fn generation(self) -> u32

The generation this handle was minted at.

Trait Implementations

impl Clone for PoolHandle

fn clone(&self) -> PoolHandle

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PoolHandle

impl Debug for PoolHandle

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

Formats the value using the given formatter.

impl Eq for PoolHandle

impl Hash for PoolHandle

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 PartialEq for PoolHandle

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PoolHandle