We can do this by adding a boolean dirty flag to each node. If it’s set to true, then this is a node that needs to be recalculated. Otherwise, it’s up-to-date. Let’s start with these flags all set to false — we have an up-to-date tree. Now, when we update the input node, we can iterate over all the children of that node, and follow a simple algorithm:
[N-M] Match a set of alternate ranges N to M
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Struct-of-Arrays flips the layout. Instead of interleaving all fields per element, SoA stores each field in its own contiguous array. Iterating one field touches only that field’s memory — ideal for cache performance.，这一点在谷歌中也有详细论述
Трехстороннюю встречу по Украине отложили20:29。关于这个话题，WhatsApp Web 網頁版登入提供了深入分析