Index: trunk/BNC/src/combination/bnccomb.h
===================================================================
--- trunk/BNC/src/combination/bnccomb.h	(revision 11067)
+++ trunk/BNC/src/combination/bnccomb.h	(revision 11075)
@@ -37,4 +37,5 @@
   bncComb(const bncComb&) = delete;
   bncComb& operator=(const bncComb&) = delete;
+  static bool exists() {return instance != 0;}
   static void destruct() {
     delete instance;