不因事小就视而不见，不因任务艰巨就退缩不前，不因目标长远就消极懈怠。
Backpressure — the ability for a slow consumer to signal a fast producer to slow down — is a first-class concept in Web streams. In theory. In practice, the model has some serious flaws.
，这一点在同城约会中也有详细论述
const res = new Array(n);
What the Online Safety Act is - and how to keep children safe online