СюжетКурс доллара:
That said, it’s also got its issues. For example, an assumption throughout this post is that it’s possible to do the entire “pull” logic in a single tick, between updates to the input nodes. If that isn’t possible, you might need to convert a long-running operation into a state machine that gets updated in the background, but this can become complicated in general8.，详情可参考新收录的资料
。关于这个话题，新收录的资料提供了深入分析
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return foldForest(fn(accumulator, tree.value), tree.forest, fn);，更多细节参见新收录的资料