是否树立和践行正确政绩观，这其中衡量的标尺是什么？
Web streams has no synchronous path. Even if your source has data ready and your transform is a pure function, you still pay for promise creation and microtask scheduling on every operation. Promises are fantastic for cases in which waiting is actually necessary, but they aren't always necessary. The new API lets you stay in sync-land when that's what you need.
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Quantitatively, what she describes as these "everyday attentive acts" turned out to be much more powerful than grand romantic gestures.
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