Entity List non-type template parameter

.hpp
  template <int>
	struct ComponentList {
		static std::set<eid> entities;
	};

	template<> std::set<eid> ComponentList<proto::Component::kLuaScript>::entities;
	template<> std::set<eid> ComponentList<proto::Component::kPosition>::entities;
	template<> std::set<eid> ComponentList<proto::Component::kOrientation>::entities;
  
.cpp

	auto test1 = ComponentList<proto::Component::kLuaScript>::entities.begin();
	auto test2 = ComponentList<proto::Component::kPosition>::entities.begin();
	auto test3 = ComponentList<proto::Component::kOrientation>::entities.begin();