本内容遵循CC 4.0 BY-SA版权协议 WeakMap 是 JavaScript 中一种特殊的键值对集合，它与常规 Map 最显著的区别在于键必须是对象类型（非原始值），并且持有的是对键的"弱引用"。这意味着当键对象在 ...
Save think49/31a2cedb5c653fd18086ade669c04323 to your computer and use it in GitHub Desktop. Map はオブジェクトの上位互換と呼べる機能で次の性質 ...
Accepting Symbol values as WeakMap keys would allow JavaScript libraries to implement their own RefCollection-like things which could be reusable (avoiding the need to pass around the mapping all over ...
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