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# Objective - Better `SystemId` <-> `Entity` conversion. ## Solution - Provide a method `SystemId::from_entity` to create a `SystemId<I, O>` form an `Entity`. When users want to deal with the entities manually they need a way to convert the `Entity` back to a `SystemId` to actually run the system with `Commands` or `World`. - Provide a method `SystemId::entity` that returns an `Entity` from `SystemId`. The current `From` impl is not very discoverable as it does not appear on the `SystemId` doc page. - Remove old `From` impl. ## Migration Guide ```rust let system_id = world.register_system(my_sys); // old let entity = Entity::from(system_id); // new let entity = system_id.entity(); ``` --------- Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com> |
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| .. | ||
| commands | ||
| adapter_system.rs | ||
| combinator.rs | ||
| exclusive_function_system.rs | ||
| exclusive_system_param.rs | ||
| function_system.rs | ||
| mod.rs | ||
| query.rs | ||
| system.rs | ||
| system_name.rs | ||
| system_param.rs | ||
| system_registry.rs | ||