implement UniqueEntityVec

crates/bevy_ecs/clippy.toml

@@ -0,0 +1,4 @@
+disallowed-methods = [
+  { path = "UniqueEntityVec::from_iter", reason = "Use UniqueEntityVec::from_entity_set_iter if possible, it skips validation" },
+  { path = "EntitySetIterator::collect::<UniqueEntityVec>", reason = "Use EntitySetIterator::collect_set if possible, it skips validation" },
+]

crates/bevy_ecs/src/entity/mod.rs

@@ -50,6 +50,10 @@ pub use entity_set::*;
 pub use map_entities::*;
 pub use visit_entities::*;
 
+mod unique_vec;
+
+pub use unique_vec::*;
+
 mod hash;
 pub use hash::*;