bkietz commented on a change in pull request #8680:
URL: https://github.com/apache/arrow/pull/8680#discussion_r534354000
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File path: cpp/src/arrow/util/future_test.cc
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@@ -768,4 +1361,27 @@ TYPED_TEST(FutureIteratorTest, ErrorsAsCompleted) {
this->TestErrorsAsCompleted(
TYPED_TEST(FutureIteratorTest, StressAsCompleted) {
this->TestStressAsCompleted(); }
+namespace internal {
+TEST(FnOnceTest, MoveOnlyDataType) {
+ // ensuring this is valid guarantees we are making no unnecessary copies
Review comment:
Yes, I think it should replace `std::function` in `thread_pool.h` at
least
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