Use #pragma once

CodingStyle.h

@@ -11,8 +11,7 @@
 // coding style. In general almost everything in here has some coding style meaning.
 // Not all style choices are explained.
 
-#ifndef CodingStyle_H
+#pragma once
-#define CodingStyle_H
 
 #include <QObject>
 #include <QMap>
@@ -79,5 +78,3 @@ private:
     
     static const int _privateStaticVariable;
 };
-
-#endif