Struct WeakRef 

pub struct WeakRef<T: ObjectType> { /* private fields */ }

A weak reference to an object of class T or a class derived from it.

Implementations

impl<T: ObjectType> WeakRef<T>

pub fn upgrade(&self) -> Option<Ref<T>>

Returns a strong reference if the object is still alive.

pub fn upcast<U: ObjectType>(self) -> WeakRef<U>

where T: Upcast<U>,

Converts the handle to a handle of a base class.

pub fn points_to<U: ObjectType>(&self, object: &Ref<U>) -> bool

Whether the weak reference points at object.

pub fn ptr_eq<U: ObjectType>(&self, other: &WeakRef<U>) -> bool

Whether two weak references point at the same object, alive or not.

Trait Implementations

impl<T: ObjectType> Clone for WeakRef<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.