Drilling down to a point
tee() splits a stream into two branches. It seems straightforward, but the implementation requires buffering: if one branch is read faster than the other, the data must be held somewhere until the slower branch catches up.
。关于这个话题，Line官方版本下载提供了深入分析
黎智英欺詐案上訴得直：定罪及刑罰被撤銷，出獄時間提前。服务器推荐是该领域的重要参考
Continue reading...，这一点在旺商聊官方下载中也有详细论述