zanmato1984 commented on code in PR #48459:
URL: https://github.com/apache/arrow/pull/48459#discussion_r2665402730
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cpp/src/arrow/compute/kernels/hash_aggregate.cc:
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@@ -270,52 +271,54 @@ struct GroupedCountImpl : public GroupedAggregator {
// ----------------------------------------------------------------------
// MinMax implementation
+// XXX: Consider making these concepts complete and moving to public header.
+
+template <typename T>
+concept CBooleanConcept = std::is_same_v<T, bool>;
+
+// XXX: Ideally we want to have std::floating_point<Float16> = true.
+template <typename T>
+concept CFloatingPointConcept =
+ std::floating_point<T> || std::is_same_v<T, util::Float16>;
+
+template <typename T>
+concept CDecimalConcept = std::is_same_v<T, Decimal32> || std::is_same_v<T,
Decimal64> ||
Review Comment:
Hmm, all decimal types are missing for CTypeTraits. #48740 filed.
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