Struct WeakPtr
#[repr(C)]
pub struct WeakPtr<T>
where
T: WeakPtrTarget, { /* private fields */ }Binding to C++ std::weak_ptr<T>.
The typical way to construct a WeakPtr from Rust is by downgrading from a SharedPtr.
Implementations
impl<T> WeakPtr<T>
where
T: WeakPtrTarget,
fn null() -> SelfMakes a new WeakPtr wrapping a null pointer.
Matches the behavior of default-constructing a std::weak_ptr.
fn upgrade(&self) -> SharedPtr<T> where T: SharedPtrTarget,Upgrades a non-owning reference into an owning reference if possible, otherwise to a null reference.
Matches the behavior of std::weak_ptr<T>::lock.
Trait Implementations
impl<T> Clone for WeakPtr<T>
where
T: WeakPtrTarget,
fn clone(&self) -> Self
impl<T> Debug for WeakPtr<T>
where
T: Debug + WeakPtrTarget + SharedPtrTarget,
fn fmt(&self, formatter: &mut Formatter<'_>) -> Result
impl<T> Drop for WeakPtr<T>
where
T: WeakPtrTarget,
fn drop(&mut self)
impl<T> Send for WeakPtr<T>
where
T: Send + Sync + WeakPtrTarget,
impl<T> Sync for WeakPtr<T>
where
T: Send + Sync + WeakPtrTarget,
Auto Trait Implementations
impl<T> Freeze for WeakPtr<T>
where
PhantomData<T>: Freeze,
impl<T> RefUnwindSafe for WeakPtr<T>
where
PhantomData<T>: RefUnwindSafe,
impl<T> Unpin for WeakPtr<T>
where
PhantomData<T>: Unpin,
impl<T> UnsafeUnpin for WeakPtr<T>
where
PhantomData<T>: UnsafeUnpin,
impl<T> UnwindSafe for WeakPtr<T>
where
PhantomData<T>: UnwindSafe,
Blanket Implementations
impl<T> Any for WeakPtr<T>
where
T: 'static + ?Sized,
fn type_id(&self) -> TypeId
impl<T> Borrow<T> for WeakPtr<T>
where
T: ?Sized,
fn borrow(&self) -> &T
impl<T> BorrowMut<T> for WeakPtr<T>
where
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
impl<T> CloneToUninit for WeakPtr<T>
where
T: Clone,
unsafe fn clone_to_uninit(&self, dest: *mut u8)
impl<T> From<T> for WeakPtr<T>
fn from(t: T) -> TReturns the argument unchanged.
impl<T> ToOwned for WeakPtr<T>
where
T: Clone,
type Owned = T;fn to_owned(&self) -> Tfn clone_into(&self, target: &mut T)
impl<T, U> Into<U> for WeakPtr<T>
where
U: From<T>,
fn into(self) -> UCalls
U::from(self).That is, this conversion is whatever the implementation of
[From]<T> for Uchooses to do.
impl<T, U> TryFrom<U> for WeakPtr<T>
where
U: Into<T>,
type Error = Infallible;fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
impl<T, U> TryInto<U> for WeakPtr<T>
where
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error;fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>