--- a/examples/tutorials/addressbook/part3/addressbook.cpp	Fri Sep 17 08:34:18 2010 +0300
+++ b/examples/tutorials/addressbook/part3/addressbook.cpp	Mon Oct 04 01:19:32 2010 +0300
@@ -122,7 +122,7 @@
     QString name = nameLine->text();
     QString address = addressText->toPlainText();
     
-    if (name == "" || address == "") {
+    if (name.isEmpty() || address.isEmpty()) {
         QMessageBox::information(this, tr("Empty Field"),
             tr("Please enter a name and address."));
         return;