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AnyView

Struct AnyView 

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pub struct AnyView { /* private fields */ }
Expand description

A type-erased view. This can be used if control flow requires that multiple different types of view must be received, and it is either impossible or too cumbersome to use the EitherOf___ enums.

It can also be used to create recursive components, which otherwise cannot return themselves due to the static typing of the view tree.

Generally speaking, using AnyView restricts the amount of information available to the compiler and should be limited to situations in which it is necessary to preserve the maximum amount of type information possible.

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impl AddAnyAttr for AnyView

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type Output<SomeNewAttr: Attribute> = AnyView

The new type once the attribute has been added.
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fn add_any_attr<NewAttr>( self, attr: NewAttr, ) -> <AnyView as AddAnyAttr>::Output<NewAttr>
where NewAttr: Attribute, <AnyView as AddAnyAttr>::Output<NewAttr>: RenderHtml,

Adds an attribute to the view.
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impl From<AnyView> for Fragment

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fn from(view: AnyView) -> Fragment

Converts to this type from the input type.
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impl From<Fragment> for AnyView

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fn from(value: Fragment) -> AnyView

Converts to this type from the input type.
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impl FromIterator<AnyView> for Fragment

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fn from_iter<T>(iter: T) -> Fragment
where T: IntoIterator<Item = AnyView>,

Creates a value from an iterator. Read more
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impl Render for AnyView

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type State = AnyViewState

The “view state” for this type, which can be retained between updates. Read more
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fn build(self) -> <AnyView as Render>::State

Creates the view for the first time, without hydrating from existing HTML.
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fn rebuild(self, state: &mut <AnyView as Render>::State)

Updates the view with new data.
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impl RenderHtml for AnyView

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const MIN_LENGTH: usize = 0

The minimum length of HTML created when this view is rendered.
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type AsyncOutput = AnyView

The type of the view after waiting for all asynchronous data to load.
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fn dry_resolve(&mut self)

“Runs” the view without other side effects. For primitive types, this is a no-op. For reactive types, this can be used to gather data about reactivity or about asynchronous data that needs to be loaded.
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async fn resolve(self) -> <AnyView as RenderHtml>::AsyncOutput

Waits for any asynchronous sections of the view to load and returns the output.
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fn to_html_with_buf( self, buf: &mut String, position: &mut Position, escape: bool, mark_branches: bool, )

Renders a view to HTML, writing it into the given buffer.
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fn to_html_async_with_buf<const OUT_OF_ORDER: bool>( self, buf: &mut StreamBuilder, position: &mut Position, escape: bool, mark_branches: bool, )
where AnyView: Sized,

Renders a view into a buffer of (synchronous or asynchronous) HTML chunks.
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fn hydrate<const FROM_SERVER: bool>( self, cursor: &Cursor, position: &PositionState, ) -> <AnyView as Render>::State

Makes a set of DOM nodes rendered from HTML interactive. Read more
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fn html_len(&self) -> usize

An estimated length for this view, when rendered to HTML. Read more
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const EXISTS: bool = true

Whether this should actually exist in the DOM, if it is the child of an element.
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fn to_html(self) -> String
where Self: Sized,

Renders a view to an HTML string.
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fn to_html_branching(self) -> String
where Self: Sized,

Renders a view to HTML with branch markers. This can be used to support libraries that diff HTML pages against one another, by marking sections of the view that branch to different types with marker comments.
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fn to_html_stream_in_order(self) -> StreamBuilder
where Self: Sized,

Renders a view to an in-order stream of HTML.
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fn to_html_stream_in_order_branching(self) -> StreamBuilder
where Self: Sized,

Renders a view to an in-order stream of HTML with branch markers. This can be used to support libraries that diff HTML pages against one another, by marking sections of the view that branch to different types with marker comments.
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fn to_html_stream_out_of_order(self) -> StreamBuilder
where Self: Sized,

Renders a view to an out-of-order stream of HTML.
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fn to_html_stream_out_of_order_branching(self) -> StreamBuilder
where Self: Sized,

Renders a view to an out-of-order stream of HTML with branch markers. This can be used to support libraries that diff HTML pages against one another, by marking sections of the view that branch to different types with marker comments.
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fn hydrate_from<const FROM_SERVER: bool>(self, el: &Element) -> Self::State
where Self: Sized,

Hydrates using RenderHtml::hydrate, beginning at the given element.
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fn hydrate_from_position<const FROM_SERVER: bool>( self, el: &Element, position: Position, ) -> Self::State
where Self: Sized,

Hydrates using RenderHtml::hydrate, beginning at the given element and position.

Auto Trait Implementations§

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<V, Key, Sig, T> BindAttribute<Key, Sig, T> for V
where V: AddAnyAttr, Key: AttributeKey, Sig: IntoSplitSignal<Value = T>, T: FromEventTarget + AttributeValue + PartialEq + Sync + 'static, Signal<BoolOrT<T>>: IntoProperty, <Sig as IntoSplitSignal>::Read: Get<Value = T> + Send + Sync + Clone + 'static, <Sig as IntoSplitSignal>::Write: Send + Clone + 'static, Element: GetValue<T>,

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type Output = <V as AddAnyAttr>::Output<Bind<Key, T, <Sig as IntoSplitSignal>::Read, <Sig as IntoSplitSignal>::Write>>

The type of the element with the two-way binding added.
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fn bind( self, key: Key, signal: Sig, ) -> <V as BindAttribute<Key, Sig, T>>::Output

Adds a two-way binding to the element, which adds an attribute and an event listener to the element when the element is created or hydrated. 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<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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impl<T, K, V> CustomAttribute<K, V> for T

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fn attr(self, key: K, value: V) -> Self::Output<CustomAttr<K, V>>

Adds an HTML attribute by key and value.
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impl<V, T, P, D> DirectiveAttribute<T, P, D> for V
where V: AddAnyAttr, D: IntoDirective<T, P>, P: Clone + 'static, T: 'static,

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type Output = <V as AddAnyAttr>::Output<Directive<T, D, P>>

The type of the element with the directive added.
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fn directive( self, handler: D, param: P, ) -> <V as DirectiveAttribute<T, P, D>>::Output

Adds a directive to the element, which runs some custom logic in the browser when the element is created or hydrated.
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impl<T> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.
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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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impl<T> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Converts Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>, which can then be downcast into Box<dyn ConcreteType> where ConcreteType implements Trait.
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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Converts Rc<Trait> (where Trait: Downcast) to Rc<Any>, which can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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fn as_any(&self) -> &(dyn Any + 'static)

Converts &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Converts &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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impl<T> DowncastSend for T
where T: Any + Send,

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fn into_any_send(self: Box<T>) -> Box<dyn Any + Send>

Converts Box<Trait> (where Trait: DowncastSend) to Box<dyn Any + Send>, which can then be downcast into Box<ConcreteType> where ConcreteType implements Trait.
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impl<S, T> Duplex<S> for T
where T: FromSample<S> + ToSample<S>,

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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<S> FromSample<S> for S

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fn from_sample_(s: S) -> S

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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> IntoAny for T
where T: Send + RenderHtml + 'static, <T as Render>::State: 'static,

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fn into_any(self) -> AnyView

Converts the view into a type-erased AnyView.
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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> IntoRender for T
where T: Render,

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type Output = T

The renderable type into which this type can be converted.
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fn into_render(self) -> <T as IntoRender>::Output

Consumes this value, transforming it into the renderable type.
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impl<F, T> IntoSample<T> for F
where T: FromSample<F>,

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fn into_sample(self) -> T

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impl<T> IntoView for T
where T: Render + RenderHtml + Send,

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fn into_view(self) -> View<T>

Wraps the inner type.
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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> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T, S> SimdFrom<T, S> for T
where S: Simd,

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fn simd_from(value: T, _simd: S) -> T

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impl<F, T, S> SimdInto<T, S> for F
where T: SimdFrom<F, S>, S: Simd,

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fn simd_into(self, simd: S) -> T

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impl<T> StorageAccess<T> for T

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fn as_borrowed(&self) -> &T

Borrows the value.
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fn into_taken(self) -> T

Takes the value.
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impl<SS, SP> SupersetOf<SS> for SP
where SS: SubsetOf<SP>,

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fn to_subset(&self) -> Option<SS>

The inverse inclusion map: attempts to construct self from the equivalent element of its superset. Read more
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fn is_in_subset(&self) -> bool

Checks if self is actually part of its subset T (and can be converted to it).
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fn to_subset_unchecked(&self) -> SS

Use with care! Same as self.to_subset but without any property checks. Always succeeds.
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fn from_subset(element: &SS) -> SP

The inclusion map: converts self to the equivalent element of its superset.
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impl<T, U> ToSample<U> for T
where U: FromSample<T>,

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fn to_sample_(self) -> U

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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<S, T> Upcast<T> for S
where T: UpcastFrom<S> + ?Sized, S: ?Sized,

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fn upcast(&self) -> &T
where Self: ErasableGeneric, T: Sized + ErasableGeneric<Repr = Self::Repr>,

Perform a zero-cost type-safe upcast to a wider ref type within the Wasm bindgen generics type system. Read more
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fn upcast_into(self) -> T
where Self: Sized + ErasableGeneric, T: Sized + ErasableGeneric<Repr = Self::Repr>,

Perform a zero-cost type-safe upcast to a wider type within the Wasm bindgen generics type system. Read more
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WasmNotSend for T
where T: Send,

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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