pitrou commented on code in PR #48459:
URL: https://github.com/apache/arrow/pull/48459#discussion_r2662274779
##########
cpp/src/arrow/type_traits.h:
##########
@@ -1837,4 +1838,23 @@ constexpr bool is_union(const DataType& type) { return
is_union(type.id()); }
/// @}
+/// \addtogroup c-type-concepts
+/// @{
+
+// XXX: To be completed with more concepts as needed.
+
+template <typename T>
+concept CBooleanConcept = std::is_same_v<T, bool>;
Review Comment:
Apparently
[`std::same_as`](https://en.cppreference.com/w/cpp/concepts/same_as.html) can
be used, though I'm not sure whether it differs from `std::is_same_v`.
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