pitrou commented on a change in pull request #8457:
URL: https://github.com/apache/arrow/pull/8457#discussion_r505672267
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File path: cpp/src/arrow/compute/kernels/vector_nested.cc
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@@ -65,18 +65,33 @@ Result<ValueDescr> ValuesType(KernelContext*, const
std::vector<ValueDescr>& arg
return ValueDescr::Array(list_type.value_type());
}
+FunctionDoc list_flatten_doc(
+ "Flatten list values",
+ ("`lists` must have a list-like type.\n"
+ "Return an array with the top list level flattened.\n"
+ "Top-level null values in `lists` do not emit anything in the input."),
+ {"lists"});
+
+FunctionDoc list_parent_indices_doc(
+ "Compute parent indices of nested list values",
+ ("`lists` must have a list-like type.\n"
+ "For each value in each list of `lists`, the top-level list index\n"
Review comment:
Yes, it's not obvious how to make this too unwiedly to write.
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