Sean R. Owen created SPARK-29411:
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Summary: Remove use of Unit companion object in favor of ()
Key: SPARK-29411
URL: https://issues.apache.org/jira/browse/SPARK-29411
Project: Spark
Issue Type: Sub-task
Components: ML, Spark Core
Affects Versions: 3.0.0
Reporter: Sean R. Owen
Assignee: Sean R. Owen
Scala 2.13 disallows use of the {{Unit}} companion object:
{code}
scala> val bar = (i:Int) => Unit
^
error: `Unit` companion object is not allowed in source; instead, use
`()` for the unit value
{code}
In these cases, where it's used to mean _the_ Unit object, just use {{()}}.
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