Algebraic subtyping (union/intersection)
�@�T�[�r�X�̒J�n���A���̒��̓R���i�Ђň��H�X�͐V�����T�[�r�X�̓����ǂ����ł͂Ȃ������B�����ȏŁA�ǂ̂悤�ɃT�[�r�X���O���ɏ悹�Ă������̂��B���Ђ̐��{���В��ɘb�����B
,详情可参考体育直播
use in the utility and later finance industries. I don't think it's inaccurate,更多细节参见体育直播
func (*Option) ArgUint64 ¶,详情可参考搜狗输入法下载