The clean-up step may seem strange, but it’s a memory-usage optimization. When a language runtime executes a series of function calls it does not need to keep already-exited stack frames around. Branching function calls only form a tree in the time dimension; at any given snapshot in time there exists only a single stack of function calls in memory, tracing the current path through the tree. If we did not set our child frames to null we would end up building the whole tree up in memory and retaining it until the recursive processing is complete. Removing references to them allows the runtime to reclaim their memory at its leisure. If you’ve ever wished that you could deal with manual memory management in JavaScript, now’s your chance!
Read-only root filesystem — writable locations are the config mount, data mount, and /tmp/axe tmpfs
，更多细节参见wps
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，这一点在手游中也有详细论述
США уличили в попытке выйти из конфликта с ИраномПолитолог Дудаков: Администрация Трампа ищет выход из конфликта с Ираном，这一点在WhatsApp Web 網頁版登入中也有详细论述
最明显的例子，就是最近炙手可热的龙虾之父——Peter Steinberger了。