--- a/src/model.cpp	Mon Jan 30 02:41:45 2017 +0200
+++ b/src/model.cpp	Mon Jan 30 14:30:55 2017 +0200
@@ -450,3 +450,8 @@
 	else
 		return nullptr;
 }
+
+int countof(Model& model)
+{
+	return model.size();
+}