edponce commented on a change in pull request #10349:
URL: https://github.com/apache/arrow/pull/10349#discussion_r695049732
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File path: cpp/src/arrow/compute/api_scalar.h
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@@ -52,6 +53,13 @@ class ARROW_EXPORT ElementWiseAggregateOptions : public
FunctionOptions {
bool skip_nulls;
};
+/// Functor to calculate hash of an enum.
Review comment:
Will place in `arrow/util/map.h`
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