# Objective `add_system(system)` without any `.in_set` configuration should land in `CoreSet::Update`. We check that the sets are empty, but for systems there is always the `SystemTypeset`. ## Solution - instead of `is_empty()`, check that the only set it the `SystemTypeSet` |
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| .. | ||
| entity | ||
| query | ||
| schedule | ||
| schedule_v3 | ||
| storage | ||
| system | ||
| world | ||
| archetype.rs | ||
| bundle.rs | ||
| change_detection.rs | ||
| component.rs | ||
| event.rs | ||
| lib.rs | ||
| reflect.rs | ||