This is fundamentally different from Web streams' pipeThrough(), which starts actively pumping data from the source to the transform as soon as you set up the pipe. Pull semantics mean you control when processing happens, and stopping iteration stops processing.
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，这一点在体育直播中也有详细论述
Watch: How US-Israel strikes on Iran unfolded... in two minutesThe US and Israel launched attacks across Iran on Saturday, with US President Donald Trump later saying Iranian Supreme Leader Ayatollah Ali Khamenei is dead.，详情可参考体育直播
It got under way in 2022 and its final report is not expected until 2027. It has already cost £192m – a figure which is expected to rise past £200m by the time it is finished, making it one of the most expensive public inquiries in history.。体育直播对此有专业解读