Scala

Java Converstions

import scala.collection.JavaConverters._

javaList.asScala

For Comprehension

val froidConfig = for {
    host <- scala.util.Properties.envOrNone("host")
    port <- scala.util.Properties.envOrNone("port").flatMap(p => Try(p.toInt).toOption)
  } yield {
    Params(
      host,
      port
    )
  }

Postfix Ops

import language.postfixOps