bundle.h

#ifndef __VECS_BUNDLE_H__
#define __VECS_BUNDLE_H__
 
#include <tuple>
 
namespace vecs {
 
struct TagBundle {};
 
namespace _traits {
 
    template<typename T>
    struct is_bundle: std::is_base_of<TagBundle, std::decay_t<T>> {};
 
    template<typename T>
    constexpr bool is_bundle_v = is_bundle<T>::value;
 
}  // namespace _traits

template<typename... Components>
struct Bundle: TagBundle {
    std::tuple<Components...>
        components;  

    constexpr Bundle(Components&&... components) :
        components(std::forward<Components>(components)...) {}
};
 
}  // namespace vecs
 
#endif