scala中Tuple简单使用

/**
  * Tuple简单使用记录
  * 最大22个参数
  */
object TupleUse {

  def main(args: Array[String]): Unit = {
    // 简单Tuple
    val t = ("yxj",30) // Tuple2
    println(t._1) // 访问Tuple中的数据，从1开始，带上下划线
    println(t._2)

    val student = new Tuple3(1,"yxj",30) // Tuple3
    println(student)

    //zip操作
    val names = Array("t","tt","ttt")
    val ages = Array(10,20,30)
    val nameAges = names.zip(ages)
    println(nameAges) // [Lscala.Tuple2;@13deb50e
    println(nameAges.mkString(",")) // (t,10),(tt,20),(ttt,30)

    // 增强for循环
    for ((name,age) <- nameAges) {
      println("name=" + name + ",age=" + age)
    }

    val students = Array((1,30),(2,"yxj2",32),(3,"yxj3",33))
    for ((id,name,age) <- students) {
      println("id=" + id + ",name=" + name + ",age=" + age)
    }

  }

}