高阶函数、wordcount

src/main/scala/top/fjy8018/scala/FunctionApp.scala

@@ -1,5 +1,7 @@
 package top.fjy8018.scala
 
+import scala.io.Source
+
 /**
   * F嘉阳
   * 2018-11-25 20:21

src/main/scala/top/fjy8018/scala/WordCount.scala

@@ -0,0 +1,22 @@
+package top.fjy8018.scala
+
+import scala.io.Source
+
+/**
+  * wordcount
+  * F嘉阳
+  * 2019-01-03 10:33
+  */
+object WordCount {
+
+  def main(args: Array[String]): Unit = {
+    wordCount()
+  }
+
+  def wordCount(): Unit ={
+    val txt = Source.fromFile("tmp/hello.txt").mkString
+
+    val txts = List(txt)
+    txts.flatMap(_.split(",")).map(x => (x,1)).groupBy(_._1).mapValues(_.size).foreach(println)
+  }
+}