pitrou commented on a change in pull request #8457:
URL: https://github.com/apache/arrow/pull/8457#discussion_r505667275
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File path: cpp/src/arrow/compute/kernels/aggregate_var_std.cc
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@@ -180,20 +180,38 @@ void AddVarStdKernels(KernelInit init,
}
}
+FunctionDoc stddev_doc{
+ "Calculate the standard deviation of a numeric array",
+ ("The number of degrees of freedom can be controlled using
VarianceOptions.\n"
+ "By default (`ddof` = 0), the population standard deviation is
calculated.\n"
+ "Nulls are ignored. If there are not enough non-null values in the
array\n"
+ "to satisfy `ddof`, an error is returned."),
Review comment:
Hmm, looks like you're right. I misread the tests.
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