Struct bevy_ecs::storage::Resources

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pub struct Resources { /* private fields */ }

Expand description

The backing store for all Resources stored in the World.

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impl Resources

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pub fn len(&self) -> usize

The total number of resources stored in the World

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pub fn iter(&self) -> impl Iterator<Item = (ComponentId, &ResourceData)>

Iterate over all resources that have been initialized, i.e. given a ComponentId

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pub fn is_empty(&self) -> bool

Returns true if there are no resources stored in the World, false otherwise.

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pub fn get(&self, component_id: ComponentId) -> Option<&ResourceData>

Gets read-only access to a resource, if it exists.

Trait Implementations§

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impl Default for Resources

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fn default() -> Resources

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl UnwindSafe for Resources

Blanket Implementations§

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impl<T> Any for Twhere
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 Twhere
T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source§

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

Mutably borrows from an owned value. Read more

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impl<T> Downcast for Twhere
T: Any,

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fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>

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. Read more

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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait. Read more

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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. Read more

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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. Read more

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