xecs

Struct StorageRead

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pub struct StorageRead<'a, T> { /* private fields */ }
Expand description

A read gurad for component storage

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impl<'a, T: Component> StorageRead<'a, T>

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pub fn count(&self) -> usize

Get the count of strorage

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pub fn exist(&self, id: EntityId) -> bool

Check if id is in storage

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pub fn get(&self, id: EntityId) -> Option<&T>

Get component from storage by id

§Details
  • Return None if id is not in storage
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pub unsafe fn get_unchecked(&self, id: EntityId) -> &T

Get component from storage by index

§Safety
  • Safe when id is in storage
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pub fn is_empty(&self) -> bool

Check storage is empty

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pub fn data(&self) -> &[T]

Get the data slice

Auto Trait Implementations§

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impl<'a, T> Freeze for StorageRead<'a, T>

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impl<'a, T> !RefUnwindSafe for StorageRead<'a, T>

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impl<'a, T> !Send for StorageRead<'a, T>

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impl<'a, T> !Sync for StorageRead<'a, T>

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impl<'a, T> Unpin for StorageRead<'a, T>

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impl<'a, T> !UnwindSafe for StorageRead<'a, T>

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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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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.