Struct ArcIdU32

pub struct ArcIdU32(/* private fields */);

An atomically referenced counted version of IdU32.

This exists primarily because it should be possible to look up Arc<IdU32>’s by u32’s in HashMap’s. While it is possible to look up Id’s in HashMap’s using &u32’s, it doesn’t work for Arc<IdU32>’s. To workaround this limitation this ArcIdU32 newtype implements Borrow<u32>, which passes it through the Arc to it’s inner IdU32.

Implementations

impl ArcIdU32

pub fn val(&self) -> u32

Return the internal identifier u32 value.

pub fn try_unwrap(this: Self) -> Result<IdU32, Self>

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

Errors

If there’s more than one strong reference to the ArcIdU32, the ArcIdU32 will be returned.

pub fn into_inner(this: Self) -> Option<IdU32>

Returns the inner value, if the ArcIdU32 has exactly one strong reference.

pub fn strong_count(&self) -> usize

Return the strong count of internal Arc.

Trait Implementations

impl Borrow<u32> for ArcIdU32

fn borrow(&self) -> &u32

Immutably borrows from an owned value.

impl Clone for ArcIdU32

fn clone(&self) -> ArcIdU32

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ArcIdU32

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

Formats the value using the given formatter.

impl Hash for ArcIdU32

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 ArcIdU32

fn eq(&self, other: &ArcIdU32) -> 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 ArcIdU32

impl StructuralPartialEq for ArcIdU32