Now let’s try pulling. Last time, one of the issues with pull-based reactivity was that we didn’t know which nodes needed to be updated. But now we do know that — any dirty output node needs to be updated. We even made a list of these nodes while we were marking the nodes as dirty!
在伊朗最高領袖阿里‧哈梅內伊（Ali Khamenei）在美以聯合空襲中身亡後，他的兒子穆傑塔巴‧哈梅內伊（Mojtaba Khamenei）被選為接班人。
，更多细节参见新收录的资料
}The pipeline flows top-to-bottom: fetch in parallel, filter, merge, write. Each step either succeeds and feeds into the next, or fails and the error propagates up through ?. The await all(futures)? line does two things — it waits for all fetches to complete in parallel, then unwraps the combined result, failing if any single fetch failed.，详情可参考新收录的资料
To produce the effect I wanted, I needed to use some JavaScript. It’s easier to make images squish and stretch with CSS, but text wants to flow when its container changes size. That’s normally a good thing!。新收录的资料对此有专业解读