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, "yxj", 30), (2, "yxj2", 32), (3, "yxj3", 33))

    for ((id, name, age) <- students) {

      println("id=" + id + ",name=" + name + ",age=" + age)

    }

  }

}