Мир Российская Премьер-лига|19-й тур
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第五十条 核进口单位应当严格执行国家关于核进口的法律、行政法规和其他有关规定，履行核进口承诺义务。
You might assume this pattern is inherent to streaming. It isn't. The reader acquisition, the lock management, and the { value, done } protocol are all just design choices, not requirements. They are artifacts of how and when the Web streams spec was written. Async iteration exists precisely to handle sequences that arrive over time, but async iteration did not yet exist when the streams specification was written. The complexity here is pure API overhead, not fundamental necessity.