Trait StrongRef

pub trait StrongRef {
    type Weak: WeakRef<Strong = Self>;

    // Required methods
    fn downgrade(&self) -> Self::Weak;
    fn ptr_eq(&self, other: &Self) -> bool;
}

A trait for strong references.

Required Associated Types

type Weak: WeakRef<Strong = Self>

The type of the weak reference.

For example, for std::rc::Rc<T>, this will be std::rc::Weak<T>.

Required Methods

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

Constructs a weak reference from a strong reference.

This is usually implemented by a downgrade method.

fn ptr_eq(&self, other: &Self) -> bool

Compare two strong references for equality.

This is usually implemented by a ptr_eq method.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<T: ?Sized> StrongRef for Rc<T>

type Weak = Weak<T>

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

fn ptr_eq(&self, other: &Self) -> bool

impl<T: ?Sized> StrongRef for Arc<T>

type Weak = Weak<T>

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

fn ptr_eq(&self, other: &Self) -> bool

Implementors