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[Merged by Bors] - add methods to get reads and writes of Access<T> #3166

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[Merged by Bors] - add methods to get reads and writes of Access<T> #3166

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ab71b47
add methods to get reads and writes of Access<T>
jakobhellermann Nov 21, 2021
3094ef1
add docs
jakobhellermann Dec 11, 2021
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add methods to get reads and writes of Access<T>
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@jakobhellermann
jakobhellermann committed Dec 11, 2021
commit ab71b47c4f4444871abd17e05bb4be1a1be5d6d1
10 changes: 10 additions & 0 deletions crates/bevy_ecs/src/query/access.rs
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Expand Up @@ -115,6 +115,16 @@ impl<T: SparseSetIndex> Access<T> {
.map(SparseSetIndex::get_sparse_set_index)
.collect()
}

pub fn reads(&self) -> impl Iterator<Item = T> + '_ {
self.reads_and_writes
.difference(&self.writes)
.map(T::get_sparse_set_index)
}

pub fn writes(&self) -> impl Iterator<Item = T> + '_ {
self.writes.ones().map(T::get_sparse_set_index)
}
}

#[derive(Clone, Eq, PartialEq)]
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