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.
扫描身份证，查询参保信息，打印参保证明……在河北三河市政务服务燕郊中心，市民王先生用了不到1分钟，就在自助服务终端机上打印好北京参保证明。
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In the Air Force, she stood out from the crowd and was selected to join the astronaut programme. She was to fly Space Shuttles - Nasa's reusable "space planes".
The gamble killed the company. It’s likely that the changing software market would anyway.