Type Alias zng_var::BoxedWeakVar

pub type BoxedWeakVar<T> = Box<dyn WeakVarBoxed<T>>;

Represents a weak reference to a BoxedVar<T>.

Aliased Type

struct BoxedWeakVar<T>(/* private fields */);

Trait Implementations

impl<T: VarValue> AnyWeakVar for BoxedWeakVar<T>

fn clone_any(&self) -> BoxedAnyWeakVar

Clone the weak reference.

fn strong_count(&self) -> usize

Gets the number of strong references to the variable.

fn weak_count(&self) -> usize

Gets the number of weak references to the variable.

fn upgrade_any(&self) -> Option<BoxedAnyVar>

Upgrade to a strong AnyVar clone.

fn as_any(&self) -> &dyn Any

Access to dyn Any methods.

impl<T: VarValue> Clone for BoxedWeakVar<T>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: VarValue> WeakVar<T> for BoxedWeakVar<T>

type Upgrade = Box<dyn VarBoxed<T>>

Output of WeakVar::upgrade.

fn upgrade(&self) -> Option<Self::Upgrade>

Upgrade to a strong BoxedVar<T> clone.

fn boxed(self) -> BoxedWeakVar<T>

where Self: Sized,

Gets the weak reference a as BoxedWeakVar<T>, does not double box.