amol- commented on code in PR #44447:
URL: https://github.com/apache/arrow/pull/44447#discussion_r1875843784
##########
cpp/src/arrow/array/util.h:
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@@ -69,6 +69,33 @@ ARROW_EXPORT
Result<std::shared_ptr<Array>> MakeEmptyArray(std::shared_ptr<DataType> type,
MemoryPool* pool =
default_memory_pool());
+/// \brief Create an Array representing a boolean mask
+///
+/// The mask will have all elements set to false except for those
+/// indices specified in the indices vector.
+///
+/// \param[in] indices Which indices in the mask should be set to true
+/// \param[in] length The total length of the mask
+/// \param[in] pool the memory pool to allocate memory from
+/// \return the resulting Array
+ARROW_EXPORT
+Result<std::shared_ptr<Array>> MakeMaskArray(const std::vector<int64_t>&
indices,
Review Comment:
I thought Arrow was constrained to C++17, isn't span a C++20 addition?
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