#pragma once

#include <cstdint>

// template<typename T>
// struct handle {
//     uint32_t id = handle::invalid_id;
// 
//     [[nodiscard]] inline bool is_valid() const { return id != handle::invalid_id; }
// 
//     static constexpr uint32_t invalid_id = -1U;
// };

template<typename U>
struct handle {
    uint32_t id = invalid_id;
    uint32_t generation = 0U;

    [[nodiscard]] inline bool is_valid() const { return id != handle::invalid_id; }

    static constexpr uint32_t invalid_id = -1U;
};