创建元组
scala> val t = (1, "hello", Console)
t: (Int, String, Console.type) = (1,hello,scala.Console$@47b530e0)
scala> val t = new Tuple3(1, "hello", Console)
t: (Int, String, Console.type) = (1,hello,scala.Console$@47b530e0)
获取元组中的数据
scala> t._1+t._2
res13: String = 1hello
遍历元组
scala> t.productIterator.foreach(i=>println(i))
1
hello
scala.Console$@47b530e0
转化成String
scala> t.toString()
res15: String = (1,hello,scala.Console$@47b530e0)
