Add grouped example to akka-docs (#25468) (#28013)

2019-10-18 08:51:31 +02:00 · 2019-10-18 08:51:31 +02:00 · 3fb6e77fd2
commit 3fb6e77fd2
parent 5db785fa15
3 changed files with 56 additions and 0 deletions
--- a/akka-docs/src/test/scala/docs/stream/operators/sourceorflow/Grouped.scala
+++ b/akka-docs/src/test/scala/docs/stream/operators/sourceorflow/Grouped.scala
@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2019 Lightbend Inc. <https://www.lightbend.com>
+ */
+
+package docs.stream.operators.sourceorflow
+import akka.stream.scaladsl.Source
+
+object Grouped {
+  def groupedExample(): Unit = {
+    import akka.actor.ActorSystem
+
+    implicit val system: ActorSystem = ActorSystem()
+
+    //#grouped
+    Source(1 to 7).grouped(3).runForeach(println)
+    // Vector(1, 2, 3)
+    // Vector(4, 5, 6)
+    // Vector(7)
+
+    Source(1 to 7).grouped(3).map(_.sum).runForeach(println)
+    // 6   (= 1 + 2 + 3)
+    // 15  (= 4 + 5 + 6)
+    // 7   (= 7)
+    //#grouped
+  }
+
+}