int GetCount() const
	{
		int c = 2;
		if(typeid(T3) != typeid(Nuller)) ++c;
		if(typeid(T4) != typeid(Nuller)) ++c;
		if(typeid(T5) != typeid(Nuller)) ++c;
		return c;
	}

Typel<int, int, Nuller, float> t; //float type unreachable
for(int i = 0; i<t.GetCount(); i++)
   Value v = t[i];