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# Objective Simplify the worldquery trait hierarchy as much as possible by putting it all in one trait. If/when gats are stabilised this can be trivially migrated over to use them, although that's not why I made this PR, those reasons are: - Moves all of the conceptually related unsafe code for a worldquery next to eachother - Removes now unnecessary traits simplifying the "type system magic" in bevy_ecs --- ## Changelog All methods/functions/types/consts on `FetchState` and `Fetch` traits have been moved to the `WorldQuery` trait and the other traits removed. `WorldQueryGats` now only contains an `Item` and `Fetch` assoc type. ## Migration Guide Implementors should move items in impls to the `WorldQuery/Gats` traits and remove any `Fetch`/`FetchState` impls Any use sites of items in the `Fetch`/`FetchState` traits should be updated to use the `WorldQuery` trait items instead Co-authored-by: Carter Anderson <mcanders1@gmail.com> |
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| .. | ||
| entity_ref_mut_lifetime_safety.rs | ||
| entity_ref_mut_lifetime_safety.stderr | ||
| query_combin_exact_sized_iterator_safety.rs | ||
| query_combin_exact_sized_iterator_safety.stderr | ||
| query_exact_sized_iterator_safety.rs | ||
| query_exact_sized_iterator_safety.stderr | ||
| query_iter_combinations_mut_iterator_safety.rs | ||
| query_iter_combinations_mut_iterator_safety.stderr | ||
| query_iter_many_mut_iterator_safety.rs | ||
| query_iter_many_mut_iterator_safety.stderr | ||
| query_lifetime_safety.rs | ||
| query_lifetime_safety.stderr | ||
| query_to_readonly.rs | ||
| query_to_readonly.stderr | ||
| system_param_derive_readonly.rs | ||
| system_param_derive_readonly.stderr | ||
| system_query_get_lifetime_safety.rs | ||
| system_query_get_lifetime_safety.stderr | ||
| system_query_get_many_lifetime_safety.rs | ||
| system_query_get_many_lifetime_safety.stderr | ||
| system_query_get_many_mut_lifetime_safety.rs | ||
| system_query_get_many_mut_lifetime_safety.stderr | ||
| system_query_iter_lifetime_safety.rs | ||
| system_query_iter_lifetime_safety.stderr | ||
| system_query_iter_many_mut_lifetime_safety.rs | ||
| system_query_iter_many_mut_lifetime_safety.stderr | ||
| system_query_set_get_lifetime_safety.rs | ||
| system_query_set_get_lifetime_safety.stderr | ||
| system_query_set_iter_lifetime_safety.rs | ||
| system_query_set_iter_lifetime_safety.stderr | ||
| system_state_get_lifetime_safety.rs | ||
| system_state_get_lifetime_safety.stderr | ||
| system_state_iter_lifetime_safety.rs | ||
| system_state_iter_lifetime_safety.stderr | ||
| system_state_iter_mut_overlap_safety.rs | ||
| system_state_iter_mut_overlap_safety.stderr | ||
| world_query_derive.rs | ||
| world_query_derive.stderr | ||