Style changes as per Matei's comments

examples/src/main/scala/spark/examples/SparkPageRank.scala

@@ -14,7 +14,6 @@ import spark.SparkContext
  * where URL and their neighbors are separated by space(s).
  */
 object SparkPageRank {
-
   def main(args: Array[String]) {
     if (args.length < 3) {
       System.err.println("Usage: PageRank <master> <file> <number_of_iterations>")
@@ -23,22 +22,22 @@ object SparkPageRank {
     var iters = args(2).toInt
     val ctx = new SparkContext(args(0), "PageRank", System.getenv("SPARK_HOME"), Seq(System.getenv("SPARK_EXAMPLES_JAR")))
     val lines = ctx.textFile(args(1), 1)
-    val links = lines.map(s => {
-        val parts = s.split("\\s+")
-        (parts(0), parts(1))
-      }).distinct().groupByKey().cache()
+    val links = lines.map{s =>
+      val parts = s.split("\\s+")
+      (parts(0), parts(1))
+    }.distinct().groupByKey().cache()
     var ranks = links.mapValues(v => 1.0)
 
     for (i <- 1 to iters) {
-      val contribs = links.join(ranks).values.flatMap{ case (urls, rank) => {
+      val contribs = links.join(ranks).values.flatMap{ case (urls, rank) =>
         val size = urls.size
         urls.map(url => (url, rank / size))
-      }}
+      }
 
-      ranks = contribs.groupByKey().mapValues(ranks => {
+      ranks = contribs.groupByKey().mapValues{ranks =>
         val sumRanks = ranks.foldLeft(0.0)(_ + _)
         0.15 + sumRanks * 0.85
-      })
+      }
     }
 
     val output = ranks.collect()