Scala Tuple 元组

 定义元组 

package org.onepiece.bigdata.windows

import java.time.LocalDate

object App {
  def main(args: Array[String]): Unit = {

    //定义元组
    val tuple = (24, 3.14, "ROSE", LocalDate.now(), true)
    println(tuple)

    println(tuple._1)
    println(tuple._2)
    println(tuple._3)
    println(tuple._4)
    println(tuple._5)
  }
}

(24,3.14,ROSE,2021-03-07,true)
24
3.14
ROSE
2021-03-07
true

 

方法返回元组

package org.onepiece.bigdata.windows
import java.time.LocalDate
object App {

  def main(args: Array[String]): Unit = {

    //定义元组
    val tuple = getTuple()
    println(tuple)

    println(tuple._1)
    println(tuple._2)
    println(tuple._3)
    println(tuple._4)
    println(tuple._5)
  }

  def getTuple(): (Int, Double, String, LocalDate, Boolean) = {
    val i = 24
    val d = 3.14D
    val s = "ROSE"
    val date = LocalDate.now()
    val isOK = true

    return (i, d, s, date, isOK)

    //return (24, 3.14, "ROSE", LocalDate.now(), true)
  }
}

(24,3.14,ROSE,2021-03-07,true)
24
3.14
ROSE
2021-03-07
true