Struct ArcIdU64

pub struct ArcIdU64(/* private fields */);

An atomically referenced counted version of IdU64.

This exists primarily because it should be possible to look up Arc<IdU64>’s by u64’s in HashMap’s. While it is possible to look up Id’s in HashMap’s using &u64’s, it doesn’t work for Arc<IdU64>’s. To workaround this limitation this ArcIdU64 newtype implements Borrow<u64>, which passes it through the Arc to it’s inner IdU64.

Implementations

impl ArcIdU64

pub fn val(&self) -> u64

Return the internal identifier u64 value.

pub fn try_unwrap(this: Self) -> Result<IdU64, Self>

Returns the inner value, if the ArcId has exactly one strong reference.

Errors

If there’s more than one strong reference to the ArcIdU64, the ArcIdU64 will be returned.

pub fn into_inner(this: Self) -> Option<IdU64>

Returns the inner value, if the ArcIdU64 has exactly one strong reference.

pub fn strong_count(&self) -> usize

Return the strong count of internal Arc.

Trait Implementations

impl Borrow<u64> for ArcIdU64

fn borrow(&self) -> &u64

Immutably borrows from an owned value.

impl Clone for ArcIdU64

fn clone(&self) -> ArcIdU64

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ArcIdU64

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

Formats the value using the given formatter.

impl Hash for ArcIdU64

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 ArcIdU64

fn eq(&self, other: &ArcIdU64) -> 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 Eq for ArcIdU64

impl StructuralPartialEq for ArcIdU64