@@ -29,16 +29,18 @@
 {
 	static if( is(typeof(super) == Object) || super.tupleof.length==0 )
 		this( typeof(this.tupleof) params )
 		{
-			this.tupleof = params;
+			static if(this.tupleof.length>0)
+				this.tupleof = params;
 		}
 	else
 		// this parameter list is not always desirable but should work for many cases
 		this( typeof(super.tupleof) ps, typeof(this.tupleof) params )
 		{
 			super(ps);
-			this.tupleof = params;
+			static if(this.tupleof.length>0)
+				this.tupleof = params;
 		}
 }
 
 /// Mixing-in the (MOST-DERIVED) member-wise comparator for a class