map

	template<typename T>
	void* createInstance() { return new T; }

	void cast_to_type()
	{
		typedef std::map<std::string, void*(*)()> map_type;

		map_type map;
		map["int"] = createInstance<int>;
		map["double"] = createInstance<double>;
		map["shogun::SGVector<int>"] = createInstance<shogun::SGVector<int> >;
		map["shogun::SGVector<double>"] = createInstance<shogun::SGVector<double> >;
	}

SGObject - cereal.cpp

#define CEREAL_SAVE_FUNCTION_NAME cereal_save
#define CEREAL_LOAD_FUNCTION_NAME cereal_load
template<class Archive>
void CSGObject::cereal_save(Archive& ar) const
{

	for (auto it = self->map.begin(); it != self->map.end(); ++it)
	    ar(it->second);     // archive Any object
	    
}
template void CSGObject::cereal_save<cereal::JSONOutputArchive>(cereal::JSONOutputArchive& ar) const;

template<class Archive>
void CSGObject::cereal_load(Archive& ar)
{

}
template void CSGObject::cereal_load<cereal::JSONInputArchive>(cereal::JSONInputArchive& ar);

#undef CEREAL_SAVE_FUNCTION_NAME
#undef CEREAL_LOAD_FUNCTION_NAME