Scala Map中数据全部取出来且数据之间使用分隔符

前言

将Scala Map 中的数据，集中放在一起输出且数据之间使用分隔符，采用addString（）函数
函数定义： def addString(sb:mutable.StringBuilder, start:String, sep:String, end:String):mutable.StringBuilder Where, sep is the separator stated.

返回类型：It returns the elements of the map in the String Builder and a start, a separator and an end is also included here.

实例

object TestScala00 {

  def main(args:Array[String]) {
    // Creating a list
    val m1 = Map(
      "s_t" -> "123456789",
      "s_h" -> "host_name",
      "ip" -> "192.168.198.179")

    // 使用 addString 方法
    val res = m1.addString(new StringBuilder(), ">>>>", "+++", "<<<<<")

    // 输出
    println(res)
  }
}

结果展示

>>>>s_t -> 123456789+++s_h -> host_name+++ip -> 192.168.198.179<<<<<