retclosure.scala

来自「JAVA 语言的函数式编程扩展」· SCALA 代码 · 共 24 行

/* Test return expressions inside closures.
 *
 * See bug#834  */

object Test {
  def response: String = {
    def check: Option[String] = {
      val closure: String=>Nothing =
        p => return Some("some problem") // should return from check

      closure("whatever")
    }

    check match {
        case Some(problem) => "check failed: " + problem
        case None => "ok"
    }
  }

  def main(args: Array[String]) {
    Console.println(response)
  }
}