GVONoncopyable() = default;
GVONoncopyable( const GVONoncopyable & ) = delete;
GVONoncopyable& operator=(const GVONoncopyable&) = delete;
+ GVONoncopyable( const GVONoncopyable && ) = delete;
+ GVONoncopyable& operator=(const GVONoncopyable&&) = delete;
};