Struct zng_handle::WeakHandle

pub struct WeakHandle<D: Send + Sync>(/* private fields */);

A weak reference to a Handle.

Implementations

impl<D: Send + Sync> WeakHandle<D>

pub fn new() -> Self

New weak handle that does not upgrade.

pub fn upgrade(&self) -> Option<Handle<D>>

Get a live handle if it was not dropped or force-dropped.

Trait Implementations

impl<D: Send + Sync> Clone for WeakHandle<D>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<D: Send + Sync> Debug for WeakHandle<D>

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

Formats the value using the given formatter.

impl<D: Send + Sync> Default for WeakHandle<D>

fn default() -> Self

Returns the “default value” for a type.

impl<D: Send + Sync> Hash for WeakHandle<D>

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<D: Send + Sync> PartialEq for WeakHandle<D>

fn eq(&self, other: &Self) -> 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<D: Send + Sync> Eq for WeakHandle<D>