Enum Remove

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pub enum Remove<C>
where C: ?Sized,
{ // some variants omitted }
Expand description

A TargetedEvent which removes component C from an entity when sent. The component is dropped and cannot be recovered.

Any handler which listens for Remove<C> will run before the component is removed. Remove<C> has no effect if the target entity does not exist or the event is consumed before it finishes broadcasting.

This type behaves like a unit struct. Use Remove::<C> to instantiate the type.

§Examples

world.send_to(target, Remove::<C>);

Trait Implementations§

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impl<C> Clone for Remove<C>
where C: ?Sized,

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fn clone(&self) -> Remove<C>

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<C> Debug for Remove<C>
where C: ?Sized,

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl<C> Default for Remove<C>
where C: ?Sized,

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fn default() -> Remove<C>

Returns the “default value” for a type. Read more
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impl<C> Event for Remove<C>
where C: Component,

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type This<'a> = Remove<C>

The type of Self, but with lifetimes modified to outlive 'a. Read more
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type EventIdx = TargetedEventIdx

Either GlobalEventIdx or TargetedEventIdx. This indicates if the event is global or targeted.
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type Mutability = Mutable

Indicates if this event is Mutable or Immutable. Read more
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fn init(world: &mut World) -> EventKind

Gets the EventKind of this event and performs any necessary initialization work. Read more
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impl<C> Copy for Remove<C>
where C: ?Sized,

Auto Trait Implementations§

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impl<C> Freeze for Remove<C>
where C: ?Sized,

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impl<C> RefUnwindSafe for Remove<C>
where C: ?Sized,

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impl<C> Send for Remove<C>
where C: ?Sized,

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impl<C> Sync for Remove<C>
where C: ?Sized,

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impl<C> Unpin for Remove<C>
where C: ?Sized,

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impl<C> UnwindSafe for Remove<C>
where C: ?Sized,

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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<E> EventSet for E
where E: Event,

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type Indices = u32

The set of event indices.
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fn new_indices(world: &mut World) -> <E as EventSet>::Indices

Create a new set of events.
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fn find_index<F>(index: &<E as EventSet>::Indices) -> Option<u32>
where F: Event,

Find the event F in the set of events. Returns the event index.
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fn for_each_index<F>(index: &<E as EventSet>::Indices, f: F)
where F: FnMut(bool, u32),

Run a function on every element of the set, passing in the event index and a boolean indicating if the event is targeted or not.
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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> 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
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impl<E> TargetedEvent for E
where E: Event<EventIdx = TargetedEventIdx>,