Trait Downgrade 

pub trait Downgrade
where
    Self: Sized,
{
    type Weak: Upgrade;

    // Required method
    fn downgrade(&self) -> Self::Weak;
}

Trait for generalizing downgrading a strong reference to a weak reference.

Required Associated Types

type Weak: Upgrade

Weak reference type.

Required Methods

fn downgrade(&self) -> Self::Weak

Downgrade to a weak reference.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<T> Downgrade for Rc<T>

type Weak = Weak<T>

fn downgrade(&self) -> Self::Weak

impl<T> Downgrade for Arc<T>

type Weak = Weak<T>

fn downgrade(&self) -> Self::Weak

impl<T> Downgrade for PhantomData<T>

type Weak = PhantomData<T>

fn downgrade(&self) -> Self::Weak

impl<T: Downgrade> Downgrade for &T

type Weak = <T as Downgrade>::Weak

fn downgrade(&self) -> Self::Weak

Implementors

impl<T: ObjectSubclass> Downgrade for ObjectImplRef<T>

type Weak = ObjectImplWeakRef<T>

impl<T: Downgrade + ObjectType> Downgrade for BorrowedObject<'_, T>

type Weak = <T as Downgrade>::Weak