Pack.hpp

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namespace ae2f { namespace Ds { namespace Arr {
 
    template<typename __el_t>
    struct __def {
        public:
        static constexpr size_t ElSize = sizeof(__el_t);
 
        using El_t = __el_t;
 
        using _f = __def<__el_t>;
    };
 
    
    template<typename T>
    union Pack {
        private:
        friend __Refer<T, 0>;
        friend __Owner<T, 0>;
 
        uint8_t c[sizeof(T) + 1];
 
        constexpr uint8_t& _isvalid() noexcept {
            return c[sizeof(T)];
        }
 
        constexpr const uint8_t& _isvalid() const noexcept {
            return c[sizeof(T)];
        }
 
        template<int d = 0>
        inline Pack() noexcept : c{0, } {
            for(size_t i = 0; i < sizeof(T) + 1; i++)
            c[i] = 0;
        }
 
        public:
 
        T Obj;
 
        constexpr bool isvalid() const noexcept {
            return c[sizeof(T)];
        }
        inline ~Pack() {}
    };
}}}