GH-44590: [C++] Add const and & to arrow::Array::statistics() r…

…eturn type (#44592) ### Rationale for this change It must be immutable. ### What changes are included in this PR? Add missing `const` and `&`. ### Are these changes tested? Yes. ### Are there any user-facing changes? Yes. **This PR includes breaking changes to public APIs.** * GitHub Issue: #44590 Authored-by: Sutou Kouhei <[email protected]> Signed-off-by: Sutou Kouhei <[email protected]>
apache · Oct 31, 2024 · e1fa7e5 · e1fa7e5
1 parent 191472d
commit e1fa7e5
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/cpp/src/arrow/array/array_base.h b/cpp/src/arrow/array/array_base.h
@@ -237,8 +237,8 @@ class ARROW_EXPORT Array {
   /// This just delegates to calling statistics on the underlying ArrayData
   /// object which backs this Array.
   ///
-  /// \return const ArrayStatistics&
-  std::shared_ptr<ArrayStatistics> statistics() const { return data_->statistics; }
+  /// \return const std::shared_ptr<ArrayStatistics>&
+  const std::shared_ptr<ArrayStatistics>& statistics() const { return data_->statistics; }
 
  protected:
   Array() = default;