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.
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“Some things don’t change,” Milner says with a chuckle when asked whether his desire to prove people wrong was as strong as ever after his 40th birthday last month. “There’s people who are always going to doubt you but that’s always something that’s been at my forefront: to prove them wrong.”，详情可参考雷电模拟器官方版本下载