zng_var::types

Struct WeakMapRefBidi

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pub struct WeakMapRefBidi<I, O, S> { /* private fields */ }
Expand description

Weak var that can upgrade to MapRefBidi<I, O, S> if the source is not dropped.

Trait Implementations§

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impl<I: VarValue, O: VarValue, S: WeakVar<I>> AnyWeakVar for WeakMapRefBidi<I, O, S>

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fn clone_any(&self) -> BoxedAnyWeakVar

Clone the weak reference.
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fn strong_count(&self) -> usize

Gets the number of strong references to the variable. Read more
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fn weak_count(&self) -> usize

Gets the number of weak references to the variable. Read more
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fn upgrade_any(&self) -> Option<BoxedAnyVar>

Upgrade to a strong AnyVar clone. Read more
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fn as_any(&self) -> &dyn Any

Access to dyn Any methods.
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impl<I: VarValue, O: VarValue, S: WeakVar<I>> Clone for WeakMapRefBidi<I, O, S>

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fn clone(&self) -> Self

Returns a copy 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<I: VarValue, O: VarValue, S: WeakVar<I>> WeakVar<O> for WeakMapRefBidi<I, O, S>

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type Upgrade = MapRefBidi<I, O, <S as WeakVar<I>>::Upgrade>

Output of WeakVar::upgrade.
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fn upgrade(&self) -> Option<Self::Upgrade>

Upgrade to a strong BoxedVar<T> clone. Read more
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fn boxed(self) -> BoxedWeakVar<T>
where Self: Sized,

Gets the weak reference a as BoxedWeakVar<T>, does not double box.

Auto Trait Implementations§

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impl<I, O, S> Freeze for WeakMapRefBidi<I, O, S>
where S: Freeze,

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impl<I, O, S> !RefUnwindSafe for WeakMapRefBidi<I, O, S>

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impl<I, O, S> Send for WeakMapRefBidi<I, O, S>
where S: Send,

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impl<I, O, S> Sync for WeakMapRefBidi<I, O, S>
where S: Sync,

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impl<I, O, S> Unpin for WeakMapRefBidi<I, O, S>
where S: Unpin,

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impl<I, O, S> !UnwindSafe for WeakMapRefBidi<I, O, S>

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, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. 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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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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.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more