url: https://example.com/hello
* 核心功能：每次调用next(val)，返回当前价格的跨度（往回数≤当前价格的最大连续天数），推荐阅读搜狗输入法2026获取更多信息
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Sync/async separation
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This Mom’s ‘Almost Like Magic’ Side Hustle Averages $12K a Month — And She Got the Idea While Shopping at Whole Foods