Time for an 2014 update…

Task/Loops-While/Scala/loops-while-2.scala

@@ -0,0 +1,8 @@
+  @tailrec
+  def loop(iter: Int) {
+    if ((iter > 0)) {
+      println(iter)
+      loop(iter / 2)
+    }
+  }
+  loop(1024)

Task/Loops-While/Scala/loops-while-3.scala

@@ -0,0 +1,6 @@
+  def loop = new Iterator[Int] {
+    var i = 1024
+    def hasNext = i > 0
+    def next(): Int = { val tmp = i; i = i / 2; tmp }
+  }
+  loop.foreach(println(_))

Task/Loops-While/Scala/loops-while-4.scala

@@ -0,0 +1,2 @@
+  def loop(i: Int): Stream[Int] = i #:: (if (i > 0) loop(i / 2) else Stream.empty)
+  loop(1024).takeWhile(_ > 0).foreach(println(_))