srowen commented on a change in pull request #24241:
[SPARK-27323][CORE][SQL][STREAMING] Use Single-Abstract-Method support in Scala
2.12 to simplify code
URL: https://github.com/apache/spark/pull/24241#discussion_r270521260
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File path: core/src/main/scala/org/apache/spark/SparkConf.scala
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@@ -392,7 +390,7 @@ class SparkConf(loadDefaults: Boolean) extends Cloneable
with Logging with Seria
/** Get an optional value, applying variable substitution. */
private[spark] def getWithSubstitution(key: String): Option[String] = {
- getOption(key).map(reader.substitute(_))
+ getOption(key).map(reader.substitute)
Review comment:
In the files I did change, I cleaned up a few other things in nearby code,
like this. Other examples are using `.nonEmpty` and removing redundant braces,
etc
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