Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/20618#discussion_r169213138
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/mathExpressions.scala
---
@@ -262,6 +273,11 @@ case class Cos(child: Expression) extends
UnaryMathExpression(math.cos, "COS")
@ExpressionDescription(
usage = "_FUNC_(expr) - Returns the hyperbolic cosine of `expr`.",
+ arguments =
+ """
--- End diff --
I mean ...
```
arguments = """
Arguments:
* expr - hyperbolic angle.
""",
```
to be consistent other styles here. For example:
https://github.com/apache/spark/blob/5683984520cfe9e9acf49e47a84a56af155a8ad2/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/regexpExpressions.scala#L156-L168
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