From 2f0f432ebcbbdf6fb25c8f500ee2fffe6b8ed025 Mon Sep 17 00:00:00 2001
From: michelou <michelou@epfl.ch>
Date: Tue, 10 Oct 2006 16:00:00 +0000
Subject: updated docs/examples/*.scala

---
 docs/examples/fors.scala | 82 +++++++++++++++++++++++-------------------------
 1 file changed, 40 insertions(+), 42 deletions(-)

(limited to 'docs/examples/fors.scala')

diff --git a/docs/examples/fors.scala b/docs/examples/fors.scala
index 6c969d3519..3de4ba52b7 100644
--- a/docs/examples/fors.scala
+++ b/docs/examples/fors.scala
@@ -1,48 +1,48 @@
-package examples;
+package examples
 
-import scala.xml._;
+import scala.xml._
 
 
 object fors {
 
-  val e = Node.NoAttributes ;
+  val e = Node.NoAttributes
 
   class Person(_name: String, _age: Int) {
-    val name = _name;
-    val age = _age;
+    val name = _name
+    val age = _age
   }
 
   def printOlderThan20(xs: Seq[Person]): Iterator[String] =
-    printOlderThan20(xs.elements);
+    printOlderThan20(xs.elements)
 
   def printOlderThan20(xs: Iterator[Person]): Iterator[String] =
-    for (val p <- xs; p.age > 20) yield p.name;
+    for (val p <- xs; p.age > 20) yield p.name
 
   val persons = List(
     new Person("John", 40),
     new Person("Richard", 68)
-  );
+  )
 
   def divisors(n: Int): List[Int] =
-    for (val i <- List.range(1, n+1); n % i == 0) yield i;
+    for (val i <- List.range(1, n+1); n % i == 0) yield i
 
-  def isPrime(n: Int) = divisors(n).length == 2;
+  def isPrime(n: Int) = divisors(n).length == 2
 
   def findNums(n: Int): Iterator[Pair[Int, Int]] =
     for (val i <- Iterator.range(1, n);
          val j <- Iterator.range(1, i-1);
-         isPrime(i+j)) yield Pair(i, j);
+         isPrime(i+j)) yield Pair(i, j)
 
   def sum(xs: List[Double]): Double =
     xs.foldLeft(0.0) { (x, y) => x + y }
 
   def scalProd(xs: List[Double], ys: List[Double]) =
-    sum(for(val Pair(x, y) <- xs zip ys) yield x * y);
+    sum(for(val Pair(x, y) <- xs zip ys) yield x * y)
 
-  type Lst = List[Any];
+  type Lst = List[Any]
 
-  val prefix = null;
-  val scope = TopScope;
+  val prefix = null
+  val scope = TopScope
 
   val books = List(
     Elem(prefix, "book", e, scope,
@@ -62,53 +62,51 @@ object fors {
     Elem(prefix, "book", e, scope,
          Elem(prefix, "title", e, scope,
               Text("Programming in Modula-2")),
-	 Elem(prefix, "author", e, scope,
+         Elem(prefix, "author", e, scope,
               Text("Wirth, Niklaus")))
-  );
+  )
 
   def findAuthor(books: Lst) =
-    for (val Elem(_, "book", _, scope, book @ _*) <- books;
-         val Elem(_, "title", _, scope, Text(title)) <- book;
+    for (val Elem(_, "book", _, _, book @ _*) <- books;
+         val Elem(_, "title", _, _, Text(title)) <- book.toList;
          (title indexOf "Program") >= 0;
-         val Elem(_, "author", _, scope, Text(author)) <- book) yield author;
+         val Elem(_, "author", _, _, Text(author)) <- List(book)) yield author
 
-  for (val Elem(_, "book", _, scope, b @ _*) <- books;
-       val Elem(_, "author", _, scope, Text(author)) <- b;
+  for (val Elem(_, "book", _, _, book @ _*) <- books;
+       val Elem(_, "author", _, _, Text(author)) <- book.toList;
        author startsWith "Ullman";
-       val Elem(_, "title", _, scope, Text(title)) <- b) yield title;
+       val Elem(_, "title", _, _, Text(title)) <- List(book)) yield title
 
   removeDuplicates(
-    for (val Elem(_, "book", _, scope, b1 @ _* ) <- books;
-         val Elem(_, "book", _, scope, b2 @ _*) <- books;
-	 b1 != b2;
-	 val Elem(_, "author", _, scope, Text(a1)) <- b1;
-	 val Elem(_, "author", _, scope, Text(a2)) <- b2;
-	 a1 == a2) yield Pair(a1, a2));
+    for (val Elem(_, "book", _, _, b1 @ _* ) <- books;
+         val Elem(_, "book", _, _, b2 @ _*) <- books;
+         b1 != b2;
+         val Elem(_, "author", _, _, Text(a1)) <- b1.toList;
+         val Elem(_, "author", _, _, Text(a2)) <- b2.toList;
+         a1 == a2) yield Pair(a1, a2))
 
   def removeDuplicates[a](xs: List[a]): List[a] =
     if (xs.isEmpty)
       xs
     else
-      xs.head :: removeDuplicates(for (val x <- xs.tail; x != xs.head) yield x);
+      xs.head :: removeDuplicates(for (val x <- xs.tail; x != xs.head) yield x)
 
   def main(args: Array[String]) = {
-    Console.print("Persons over 20:");
-    printOlderThan20(persons) foreach { x => Console.print(" " + x) };
-    Console.println;
+    Console.print("Persons over 20:")
+    printOlderThan20(persons) foreach { x => Console.print(" " + x) }
+    Console.println
 
-    Console.println("divisors(34) = " + divisors(34));
+    Console.println("divisors(34) = " + divisors(34))
 
     Console.print("findNums(15) =");
-    findNums(15) foreach { x => Console.print(" " + x); };
-    Console.println;
+    findNums(15) foreach { x => Console.print(" " + x); }
+    Console.println
 
-    val xs = List(3.5, 5.0, 4.5);
-    Console.println("average(" + xs + ") = "
-      + sum(xs) / xs.length);
+    val xs = List(3.5, 5.0, 4.5)
+    Console.println("average(" + xs + ") = " + sum(xs) / xs.length)
 
-    val ys = List(2.0, 1.0, 3.0);
-    Console.println("scalProd(" + xs + ", " + ys +") = "
-      + scalProd(xs, ys));
+    val ys = List(2.0, 1.0, 3.0)
+    Console.println("scalProd(" + xs + ", " + ys +") = " + scalProd(xs, ys))
   }
 
 }
-- 
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