MiniaczQ fc93e13c36 Populated (query) system param (#15488) ... # Objective Add a `Populated` system parameter that acts like `Query`, but prevents system from running if there are no matching entities. Fixes: #15302 ## Solution Implement the system param which newtypes the `Query`. The only change is new validation, which fails if query is empty. The new system param is used in `fallible_params` example. ## Testing Ran `fallible_params` example. --------- Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>		2024-09-30 18:05:00 +00:00
..
change_detection.rs	Track source location in change detection (#14034)	2024-07-30 12:02:38 +00:00
component_hooks.rs	Simpler lint fixes: makes ci lints work but disables a lint for now (#15376)	2024-09-24 11:42:59 +00:00
custom_query_param.rs	Simpler lint fixes: makes ci lints work but disables a lint for now (#15376)	2024-09-24 11:42:59 +00:00
custom_schedule.rs	Simpler lint fixes: makes ci lints work but disables a lint for now (#15376)	2024-09-24 11:42:59 +00:00
dynamic.rs	Rename init_component & friends (#15454)	2024-09-26 22:47:28 +00:00
ecs_guide.rs	Add example enum Component usage to ecs_guide (#13777)	2024-06-25 12:57:11 +00:00
event.rs	Created an EventMutator for when you want to mutate an event before reading (#13818)	2024-07-08 14:53:06 +00:00
fallible_params.rs	Populated (query) system param (#15488)	2024-09-30 18:05:00 +00:00
fixed_timestep.rs	Unify FixedTime and Time while fixing several problems (#8964)	2023-10-16 01:57:55 +00:00
generic_system.rs	Add insert_state to App. (#11043)	2023-12-21 14:09:24 +00:00
hierarchy.rs	Simpler lint fixes: makes ci lints work but disables a lint for now (#15376)	2024-09-24 11:42:59 +00:00
iter_combinations.rs	Fix floating point math (#15239)	2024-09-16 23:28:12 +00:00
nondeterministic_system_order.rs	Fix non-functional nondeterministic_system_order example (#10719)	2023-11-25 21:13:35 +00:00
observer_propagation.rs	Bubbling observers traversal should use query data (#15385)	2024-09-23 18:08:36 +00:00
observers.rs	Return Results from Camera's world/viewport conversion methods (#14989)	2024-09-03 19:45:15 +00:00
one_shot_systems.rs	System param validation for observers, system registry and run once (#15526)	2024-09-30 01:00:39 +00:00
parallel_query.rs	Simpler lint fixes: makes ci lints work but disables a lint for now (#15376)	2024-09-24 11:42:59 +00:00
removal_detection.rs	Use observers for removal detection in example (#14895)	2024-08-23 23:45:01 +00:00
run_conditions.rs	Simpler lint fixes: makes ci lints work but disables a lint for now (#15376)	2024-09-24 11:42:59 +00:00
send_and_receive_events.rs	Simpler lint fixes: makes ci lints work but disables a lint for now (#15376)	2024-09-24 11:42:59 +00:00
startup_system.rs	Schedule-First: the new and improved add_systems (#8079)	2023-03-18 01:45:34 +00:00
system_closure.rs	Allow tuples and single plugins in add_plugins, deprecate add_plugin (#8097)	2023-06-21 20:51:03 +00:00
system_param.rs	Inverse missing_docs logic (#11676)	2024-02-03 21:40:55 +00:00
system_piping.rs	Simpler lint fixes: makes ci lints work but disables a lint for now (#15376)	2024-09-24 11:42:59 +00:00
system_stepping.rs	Remove stepping from default features (#12847)	2024-04-03 19:16:02 +00:00