Without

Struct Without

pub struct Without<T, Q>(/* private fields */);

Expand description

Query transformer skipping entities that have a T component

See also QueryBorrow::without.

§Example

let mut world = World::new();
let a = world.spawn((123, true, "abc"));
let b = world.spawn((456, false));
let c = world.spawn((42, "def"));
let entities = world.query::<Without<bool, &i32>>()
    .iter()
    .map(|(e, &i)| (e, i))
    .collect::<Vec<_>>();
assert_eq!(entities, &[(c, 42)]);

Trait Implementations§

impl<T: Component, Q: Query> Query for Without<T, Q>

Auto Trait Implementations§

impl<T, Q> Freeze for Without<T, Q>

impl<T, Q> RefUnwindSafe for Without<T, Q>
where Q: RefUnwindSafe,

impl<T, Q> Send for Without<T, Q>
where Q: Send,

impl<T, Q> Sync for Without<T, Q>
where Q: Sync,

impl<T, Q> Unpin for Without<T, Q>
where Q: Unpin,

impl<T, Q> UnwindSafe for Without<T, Q>
where Q: UnwindSafe,

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

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

fn into(self) -> U

Calls U::from(self).

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

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

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<T> Component for T
where T: Send + Sync + 'static,