小编PKM*_*M15的帖子

我正在尝试将 Array[Row] 转换为 Array[Int] 但徒劳无功。感谢一些帮助

scala> res17(0).toInt
<console>:30: error: value toInt is not a member of org.apache.spark.sql.Row
          res17(0).toInt
                   ^

scala> res17(0)
res28: org.apache.spark.sql.Row = [1,0]

scala> res17(0).toArray
<console>:30: error: value toArray is not a member of org.apache.spark.sql.Row
          res17(0).toArray
                   ^

scala> res17
res30: Array[org.apache.spark.sql.Row] = Array([1,0])

如果我使用下面考虑我不需要参数,它不会在eclipse中检测到Scala.

object HelloWorld {
  def main(): Unit = {
    println("Hello Scala!!!")
  }
}

它工作得很好 args: Array[String]

object HelloWorld {
  def main(args: Array[String]): Unit = {
    println("Hello Scala!!!")
  }
}