Effect

Struct Effect 

pub struct Effect<T, F>
where T: 'static, F: Fn(Option<T>) -> T,
{ /* private fields */ }
Expand description

Handle for a running effect. Construct effects with Effect::new.

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impl<T, F> Effect<T, F>
where T: Any + 'static, F: Fn(Option<T>) -> T + 'static,

pub fn new(f: F)

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impl Effect<(), fn(Option<()>)>

Create an effect updater that runs on_change when any signals within compute subscribe to changes. compute is immediately run and its return value is returned from UpdaterEffect::new_stateful. Signals that are wrapped with untrack will not subscribe to any effect.

pub fn untrack<T>(f: impl FnOnce() -> T) -> T

pub fn batch<T>(f: impl FnOnce() -> T) -> T

Trait Implementations§

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impl<T, F> Drop for Effect<T, F>
where T: 'static, F: Fn(Option<T>) -> T,

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl<T, F> EffectTrait for Effect<T, F>
where T: 'static, F: Fn(Option<T>) -> T + 'static,

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fn id(&self) -> Id

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fn run(&self) -> bool

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fn add_observer(&self, id: Id)

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fn clear_observers(&self) -> HashSet<Id>

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fn as_any(&self) -> &(dyn Any + 'static)

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fn priority(&self) -> EffectPriority

Auto Trait Implementations§

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impl<T, F> !Freeze for Effect<T, F>

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impl<T, F> !RefUnwindSafe for Effect<T, F>

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impl<T, F> Send for Effect<T, F>
where F: Send, T: Send,

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impl<T, F> !Sync for Effect<T, F>

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impl<T, F> Unpin for Effect<T, F>
where F: Unpin, T: Unpin,

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impl<T, F> UnwindSafe for Effect<T, F>
where F: UnwindSafe, T: UnwindSafe,

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> 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> 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, 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