vhazrati · September 16, 2014 13:35 · Sep 16, 2014
diff --git a/AdvancedOptions b/AdvancedOptions
@@ -0,0 +1,48 @@
+object OptionPlay {
+  println("Welcome to the Scala worksheet")
+  def someCrappyJavaService = null
+  val result: Option[String] = Some("Hello")
+  def someProcessingLogic(x: String) = println(s"I would execute when there is some value like $x")
+  def opSomeProcessingLogic(x: String): Option[String] = { println(s"I would execute when there is some value like $x"); Some("Some String") }
+  //Standard Way
+  if (result != None) someProcessingLogic(result.get)
+  if (result.isDefined) someProcessingLogic(result.get)
+
+  for (res <- result) someProcessingLogic(res)
+
+  result match {
+    case None => None
+    case Some(x) => someProcessingLogic(x)
+  }
+
+  // Better Way!
+  result map { x => someProcessingLogic(x) }
+  result foreach { x => someProcessingLogic(x) }
+
+  result.toList
+  None.isEmpty
+
+  result.flatMap(opSomeProcessingLogic(_))
+
+  result filter (_.size > 3) foreach (x => println(x))
+
+  val noneResult: Option[String] = None
+  noneResult filter (_.size > 3) foreach (x => println(x))
+
+  None orElse Some(10) orElse None orElse Some(1)
+
+  val option1 = Some(10)
+  val option2 = Some(99)
+  val option3 = Some("Hi")
+  for {
+    a <- option1
+    b <- option2
+    c <- option3
+  } yield a + b + c
+
+  val a: Option[Int] = Some(1)
+  val b = a map (_ + 1)
+
+  val c = a.get + 1
+
+}