Scala 元祖Tuple

package chapter07

object Test10_Tuple {
  def main(args: Array[String]): Unit = {
    // 1. 创建元组 3元祖就是有3个元素
    val tuple: (String, Int, Char, Boolean) = ("hello", 100, 'a', true)
    println(tuple)

    // 2. 访问数据
    println(tuple._1)
    println(tuple._2)
    println(tuple._3)
    println(tuple._4)

    println(tuple.productElement(1))

    println("====================")
    // 3. 遍历元组数据 productIterator
    for (elem <- tuple.productIterator)
      println(elem)

    // 4. 嵌套元组 mulTuple._4._2
    val mulTuple = (12, 0.3, "hello", (23, "scala"), 29)
    println(mulTuple._4._1)
  }
}