fix handling same types in promoting visitor

alib2data/src/common/multipleDispatch.hpp

@@ -154,16 +154,21 @@ public:
 	public:
 		ReturnType eval(bool firstAttempt, const ParametersType& first, const ParametersType& second) {
+			if(first.selfTypeId() == second.selfTypeId())
+				return ReturnType(callback((const RealParametersType&) first, (const RealParametersType&) second));
+
 			if(firstAttempt) {
 				alib::Object casted = alib::castApi::getCastPool(first.selfTypeId()).cast(second);
 				return ReturnType(callback((const RealParametersType&) first, (const RealParametersType&) casted.getData()));
 			} else {
-				alib::Object casted = alib::castApi::getCastPool(first.selfTypeId()).cast(first);
+				alib::Object casted = alib::castApi::getCastPool(second.selfTypeId()).cast(first);
 				return ReturnType(callback((const RealParametersType&) casted.getData(), (const RealParametersType&) second));
 			}
 		}
 		bool available(bool firstAttempt, long long first, long long second) {
+			if(first == second) return true;
+	
 			if(firstAttempt)
 				return alib::castApi::castAvailable(first, second);
 			else