pitrou commented on code in PR #12891:
URL: https://github.com/apache/arrow/pull/12891#discussion_r855376851
##########
cpp/src/arrow/util/vector.h:
##########
@@ -78,8 +78,8 @@ std::vector<T> ReplaceVectorElement(const std::vector<T>&
values, size_t index,
template <typename T, typename Predicate>
std::vector<T> FilterVector(std::vector<T> values, Predicate&& predicate) {
- auto new_end =
- std::remove_if(values.begin(), values.end(),
std::forward<Predicate>(predicate));
+ auto new_end = std::stable_partition(values.begin(), values.end(),
Review Comment:
Yeah, inverting it would probably be slightly more efficient than calling a
stable partition (which can allocate temporary memory AFAIU).
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