#3018 - Enabling -Xlint and dealing with the situation that occurs

akka-docs/rst/scala/code/docs/actor/FaultHandlingDocSample.scala

@@ -204,7 +204,7 @@ class CounterService extends Actor {
         if (backlog.size >= MaxBacklog)
           throw new ServiceUnavailable(
             "CounterService not available, lack of initial value")
-        backlog = backlog :+ (sender, msg)
+        backlog :+= (sender -> msg)
     }
   }
 

akka-docs/rst/scala/code/docs/camel/Introduction.scala

@@ -7,7 +7,7 @@ import language.postfixOps
 import akka.util.Timeout
 
 object Introduction {
-  def foo = {
+  def foo(): Unit = {
     //#Consumer-mina
     import akka.camel.{ CamelMessage, Consumer }
 
@@ -27,7 +27,7 @@ object Introduction {
     val mina = system.actorOf(Props[MyEndpoint])
     //#Consumer-mina
   }
-  def bar = {
+  def bar(): Unit = {
     //#Consumer
     import akka.camel.{ CamelMessage, Consumer }
 
@@ -41,7 +41,7 @@ object Introduction {
     }
     //#Consumer
   }
-  def baz = {
+  def baz(): Unit = {
     //#Producer
     import akka.actor.Actor
     import akka.camel.{ Producer, Oneway }

akka-docs/rst/scala/code/docs/dataflow/DataflowDocSpec.scala

@@ -50,7 +50,7 @@ class DataflowDocSpec extends WordSpec with MustMatchers {
     val v1, v2 = Promise[Int]()
     flow {
       // v1 will become the value of v2 + 10 when v2 gets a value
-      v1 << v2() + 10
+      v1 << 10 + v2()
       v1() + v2()
     } onComplete println
     flow { v2 << 5 } // As you can see, no blocking above!

akka-docs/rst/scala/code/docs/future/FutureDocSpec.scala

@@ -340,12 +340,12 @@ class FutureDocSpec extends AkkaSpec {
     def loadPage(s: String) = s
     val url = "foo bar"
     def log(cause: Throwable) = ()
-    def watchSomeTV = ()
+    def watchSomeTV(): Unit = ()
     //#and-then
     val result = Future { loadPage(url) } andThen {
       case Failure(exception) ⇒ log(exception)
     } andThen {
-      case _ ⇒ watchSomeTV
+      case _ ⇒ watchSomeTV()
     }
     result foreach println
     //#and-then

akka-docs/rst/scala/code/docs/routing/RouterViaProgramDocSpec.scala

@@ -16,7 +16,7 @@ object RouterViaProgramDocSpec {
 
   class ExampleActor1 extends Actor {
     def receive = {
-      case m @ Message1(nbr) ⇒ sender ! (self, m)
+      case m @ Message1(nbr) ⇒ sender ! ((self, m))
     }
   }
 

akka-docs/rst/scala/code/docs/testkit/TestkitDocSpec.scala

@@ -186,7 +186,7 @@ class TestkitDocSpec extends AkkaSpec with DefaultTimeout with ImplicitSender {
     val probe1 = TestProbe()
     val probe2 = TestProbe()
     val actor = system.actorOf(Props[MyDoubleEcho])
-    actor ! (probe1.ref, probe2.ref)
+    actor ! ((probe1.ref, probe2.ref))
     actor ! "hello"
     probe1.expectMsg(500 millis, "hello")
     probe2.expectMsg(500 millis, "hello")