kou commented on code in PR #47183:
URL: https://github.com/apache/arrow/pull/47183#discussion_r2233280819
##########
cpp/src/arrow/compare.cc:
##########
@@ -1532,11 +1533,14 @@ bool DoubleEquals(const double& left, const double&
right, const EqualOptions& o
return result;
}
-bool ArrayStatisticsValueTypeEquals(
- const std::optional<ArrayStatistics::ValueType>& left,
- const std::optional<ArrayStatistics::ValueType>& right, const
EqualOptions& options) {
+template <typename Type>
+bool ArrayStatisticsValueTypeEquals(const std::optional<Type>& left,
Review Comment:
Ah,
https://github.com/apache/arrow/blob/f9301c0ba8a7ed1b0b63275cfdd4c44c26b04675/cpp/src/arrow/compare.cc#L1567-L1568
uses `std::optional<double>` not `std::optional<ValueTYpe>` by using
`template`.
How about `ArrayStatisticsOptionalEquals()` or
`ArrayStatisticsOptionalValueEquals()`? I think that `optional` is an important
information for this.
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