Explicit backpressure
效率在提升，但岗位似乎在减少。 这或许是 AI 时代最直接、也最现实的信号。
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async *transform(source) {
* - this.arr：存储每日股票价格（按调用next的顺序）
On a device like the Galaxy S26 Ultra, you'll get additional note-taking features to make the most of the built-in S Pen stylus -- though you can no longer use Bluetooth gestures like you could with older models. There are several new Galaxy AI features as well, including context-based Now Nudge, similar to Google's Magic Cue, and an upgraded scam detection tool.