在Scala中对Map函数的使用

package pp28{object cscc {def main(args: Array[String]): Unit = {val m1 = Map("马云 — 阿里巴巴" -> 1964,"马化腾 — 腾讯" -> 1971,"李彦宏 - 百度" -> 1968,"雷军 - 小米" -> 1969,"丁磊 - 网易" -> 1971,"张一鸣 - 抖音" -> 1983,"刘强东 - 京东" -> 1974,"程维 - 滴滴" -> 1983,"王兴 - 美团" -> 1979,"周鸿祎 - 360" -> 1970,"黄峥 - 拼多多" -> 1980,"李想 - 理想汽车" -> 1981,"何小鹏 - 小鹏汽车" -> 1977,"贾跃亭 - 乐视" -> 1973,"陈天桥 - 盛大网络" -> 1973,"周源 - 知乎" -> 1980,"张小龙 - 微信" -> 1969,"王小川 - 搜狗" -> 1978)for ((key,value)<-m1 if(value == 1971)){println(key,value)}for((key,1971)<-m1){println(key,1971)}//    作业：从Map中打印所有年龄为1971 的创业者的信息//    case class cyz(name:String, Enterprise:String,year:Int)//      m1.foreach {
//        case (name, age) if age == 1971 => println(s"年为${age}的创业者${name}")
//        case _ => println(s"其他年不为1971的创业者")
//      }}}