js8544 commented on code in PR #36932:
URL: https://github.com/apache/arrow/pull/36932#discussion_r1288439634
##########
cpp/src/arrow/compute/kernels/vector_cumulative_ops.cc:
##########
@@ -217,53 +253,142 @@ const FunctionDoc cumulative_min_doc{
"start as the new minimum)."),
{"values"},
"CumulativeOptions"};
+
+const FunctionDoc cumulative_mean_doc{
+ "Compute the cumulative mean over a numeric input",
+ ("`values` must be numeric. Return an array/chunked array which is the\n"
+ "cumulative mean computed over `values`. CumulativeOptions::start_value
is \n"
+ "ignored."),
+ {"values"},
+ "CumulativeOptions"};
} // namespace
Review Comment:
Done
##########
cpp/src/arrow/compute/api_vector.h:
##########
@@ -661,6 +661,16 @@ Result<Datum> CumulativeMin(
const Datum& values, const CumulativeOptions& options =
CumulativeOptions::Defaults(),
ExecContext* ctx = NULLPTR);
+/// \brief Compute the cumulative mean of an array-like object
+///
Review Comment:
I added in both
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