Cleanup Itemviews examples

Cleanup the Itemviews examples
 - use nullptr instead 0
 - use for loop instead foreach
 - include own header first
 - remove uselss includes

Change-Id: I32e9f64356e42038707d063dcad977239ce1fe9e
Reviewed-by: Luca Beldi <v.ronin@yahoo.it>
Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/examples/widgets/itemviews/interview/model.h b/examples/widgets/itemviews/interview/model.h
index 969cf693b2..132f1d01aa 100644
--- a/examples/widgets/itemviews/interview/model.h
+++ b/examples/widgets/itemviews/interview/model.h
@@ -61,7 +61,7 @@ class Model : public QAbstractItemModel
     Q_OBJECT
 
 public:
-    Model(int rows, int columns, QObject *parent = 0);
+    Model(int rows, int columns, QObject *parent = nullptr);
     ~Model();
 
     QModelIndex index(int row, int column, const QModelIndex &parent) const override;
@@ -80,7 +80,7 @@ private:
 
     struct Node
     {
-        Node(Node *parent = 0) : parent(parent), children(0) {}
+        Node(Node *parent = nullptr) : parent(parent), children(nullptr) {}
         ~Node() { delete children; }
         Node *parent;
         QVector<Node> *children;