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VWeak

vtable

Struct VWeak 

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pub struct VWeak<VTable: VTableMetaDropInPlace + 'static, X = Dyn> { /* private fields */ }
Expand description

Weak pointer for the VRc where VTable is a VTable struct, and X is the type of the instance, or Dyn if it is not known

Similar to alloc::rc::Weak.

Can be constructed with VRc::downgrade and use VWeak::upgrade to re-create the original VRc.

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impl<VTable: VTableMetaDropInPlace + 'static, X> VWeak<VTable, X>

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pub fn upgrade(&self) -> Option<VRc<VTable, X>>

Returns a new VRc if some other instance still holds a strong reference to this item. Otherwise, returns None.

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

Returns true if the two VWeak instances point to the same allocation

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impl<VTable: VTableMetaDropInPlace + 'static, X: HasStaticVTable<VTable> + 'static> VWeak<VTable, X>

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pub fn into_dyn(self) -> VWeak<VTable, Dyn>

Convert a VRc of a real instance to a VRc of a Dyn instance

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impl<VTable: VTableMetaDropInPlace + 'static, X> Clone for VWeak<VTable, X>

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<VTable: VTableMetaDropInPlace + 'static, X> Default for VWeak<VTable, X>

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<T: VTableMetaDropInPlace + 'static, X> Drop for VWeak<T, X>

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fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations§

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impl<VTable, X> Freeze for VWeak<VTable, X>

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impl<VTable, X> RefUnwindSafe for VWeak<VTable, X>
where X: RefUnwindSafe, <VTable as VTableMeta>::VTable: RefUnwindSafe,

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impl<VTable, X = Dyn> !Send for VWeak<VTable, X>

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impl<VTable, X = Dyn> !Sync for VWeak<VTable, X>

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impl<VTable, X> Unpin for VWeak<VTable, X>

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impl<VTable, X> UnwindSafe for VWeak<VTable, X>
where X: RefUnwindSafe, <VTable as VTableMeta>::VTable: RefUnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.