--- UnitTest.cpp	2004/05/14 07:13:01	7
+++ UnitTest.cpp	2004/05/14 20:57:49	10
@@ -10,6 +10,23 @@
 
 using namespace std;
 
+template<typename Type>
+bool contains(const Type& value, DoublyLinkedList<Type>& list)
+{
+	for (Iterator<Type> itor(list.iterator()); !itor.end(); itor++)
+	{
+		if (*itor == value) return true;
+	}
+
+	return false;
+}
+
+class VowelVisitor : public Visitor<string>
+{
+public:
+	void visit(const string& value) { if (value.find_first_of("aAeEiIoOuU") == 0) cout << value << '\n'; }
+};
+
 int main(int argc, char* argv[])
 {
 	cout.setf(ios_base::boolalpha);
@@ -36,13 +53,30 @@ int main(int argc, char* argv[])
 	cout << "list.contains(2) = " << list.contains(2) << '\n'
 		<< "list.contains(5) = " << list.contains(5) << '\n';
 
-	Iterator<int> itor(list.iterator());
-
-	do
+	for (Iterator<int> itor(list.iterator()); !itor.end(); itor++)
 	{
 		cout << *itor << '\n';
 	}
-	while ((itor++).next());
+
+	cout << "contains(3, list) = " << contains(3, list) << '\n'
+		<< "contains(4, list) = " << contains(4, list) << '\n';
+
+	DoublyLinkedList<string> words;
+
+	words.addFront("Douglas");
+	words.addBack("Allen");
+	words.addFront("Edward");
+	words.addBack("attack");
+	words.addFront("Thrift");
+
+	for (Iterator<string> itor(words.iterator()); !itor.end(); itor++)
+	{
+		if (itor->find_first_of("aAeEiIoOuU") == 0) cout << *itor << '\n';
+	}
+
+	VowelVisitor vowels;
+
+	words.accept(dynamic_cast<Visitor<string>*>(&vowels));
 
 	return 0;
 }