Struct specs::storage::NullStorage

pub struct NullStorage<T>(/* private fields */);

A null storage type, used for cases where the component doesn’t contain any data and instead works as a simple flag.

Trait Implementations

impl<T> Default for NullStorage<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T> SharedGetMutStorage<T> for NullStorage<T>

unsafe fn shared_get_mut(&self, _: Index) -> &mut T

Gets mutable access to the the data associated with an Index.

impl<T> UnprotectedStorage<T> for NullStorage<T>

type AccessMut<'a> = &'a mut T where T: 'a

The wrapper through with mutable access of a component is performed.

unsafe fn clean<B>(&mut self, has: B)where B: BitSetLike,

Clean the storage given a bitset with bits set for valid indices dropping all existing components.

unsafe fn get(&self, _: Index) -> &T

Gets a shared reference to the data associated with an Index.

unsafe fn get_mut(&mut self, id: Index) -> &mut T

Gets mutable access to the the data associated with an Index.

unsafe fn insert(&mut self, _: Index, v: T)

Inserts new data for a given Index.

unsafe fn remove(&mut self, _: Index) -> T

Removes the data associated with an Index.

unsafe fn drop(&mut self, id: Index)

Drops the data associated with an Index. This could be used when a more efficient implementation for it exists than remove when the data is no longer needed. Defaults to simply calling remove.

impl<T> DistinctStorage for NullStorage<T>