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.
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大胆预测，2026 年 PPT 将不再是打工人的噩梦。但随之而来的新问题是：当 AI 能够完美代劳时，我们该如何使用 AI 生成更好的 PPT，避免自己沦为 AI 的「念稿机器」？
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