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Add EntityMap::clear #9291

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Jul 31, 2023
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Add EntityMap::clear #9291

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5 changes: 5 additions & 0 deletions crates/bevy_ecs/src/entity/map_entities.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -106,6 +106,11 @@ impl EntityMap {
self.map.iter().map(|(from, to)| (*from, *to))
}

/// Clears the map, removing all entity pairs. Keeps the allocated memory for reuse.
pub fn clear(&mut self) {
self.map.clear();
}

/// Creates an [`EntityMapper`] from this [`EntityMap`] and scoped to the provided [`World`], then calls the
/// provided function with it. This allows one to allocate new entity references in the provided `World` that are
/// guaranteed to never point at a living entity now or in the future. This functionality is useful for safely
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