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.
newscientist.com，详情可参考旺商聊官方下载
，这一点在旺商聊官方下载中也有详细论述
Get our flagship newsletter with all the headlines you need to start the day. Sign up here.
Трамп высказался о непростом решении по Ирану09:14。业内人士推荐WPS下载最新地址作为进阶阅读