[GitHub] [arrow] wesm commented on a change in pull request #7378: ARROW-8866: [C++] Split UNION into SPARSE_UNION and DENSE_UNION

[GitBox <gi...@apache.org>]

wesm commented on a change in pull request #7378:
URL: https://github.com/apache/arrow/pull/7378#discussion_r439539160



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File path: cpp/src/arrow/array/array_primitive.h
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@@ -108,11 +108,11 @@ class ARROW_EXPORT DayTimeIntervalArray : public PrimitiveArray {
   // For compatibility with Take kernel.
   TypeClass::DayMilliseconds GetView(int64_t i) const { return GetValue(i); }
 
-  int32_t byte_width() const { return sizeof(TypeClass::DayMilliseconds); }
-
   const uint8_t* raw_values() const { return raw_values_ + data_->offset * byte_width(); }
 
  protected:
+  static constexpr int32_t byte_width() { return sizeof(TypeClass::DayMilliseconds); }

Review comment:
       I also don't think this change belongs in this PR




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