Struct genesis::MapStorage [−][src]
pub struct MapStorage<T> { /* fields omitted */ }
Expand description
A storage type based on a HashMap, intended for sparsely used components.
Implementations
Get a reference to the associated component for the given entity, if any.
Get a mutable reference to the associated component for the given entity, if any.
Set the component for the given entity. Returns Err(NoSuchEnitty) if the given entity doesn’t exist. Otherwise, returns the previous data stored in self for the given entity.
Remove the component for the given entity. Returns the previous data associated with the given entity in self. Does not check if the entity exists; only use this if you know it exists, e.g. through invariants in your code or because you retrieved this in a loop iterating over all alive entities.
Remove the component for the given entity. Returns the previous data associated with the given entity in self.