/** * 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) } } }