SCALA MODULE 1 AND MODULE 2 CLASS FILES ======================================= Difference between val and var variable types ============================================= val a = "hello world" a = "val can not changed" var b = "hello world" b = "I can change b value" Assigning Block of code ======================= val x = {val a =10; val b = 100; b -a} Lazy Evaluation =============== lazy val a = scala.io.Source.fromFile("pavan").mkString val b = sc.textFile("xyz") b.take Control Structure ================= var x = 5 val s = if (x > 0 && x < 6) 1 else 0 val s =if (x > 0 && x < 6) "positive" else 0 var args = "Pavan Kumar" println("length is " + args.length) var i = 0 while(i<args.length) { println(args(i)) i+= 1 } var args= "Hello" args.foreach(arg=> println(arg)) args.foreach(arg=> { println(...