I read Ephemerons explained today after finding it on Hacker News, and it was good but lengthy. It was also described in terms of the Squeak language and included post-mortem finalization, which is ...

TIP: WeakMaps exhibit the same behavior as a WeakSets, except WeakMaps work with key-values pairs instead of individual items. This is expected behavior because WeakMap can only contain objects as ...

WeakMaps 仅允许使用对象作为键，这是 WeakMaps 的一个限制。新功能扩展了 WeakMap API，允许使用唯一的 Symbol 作为键。 2023 年 6 月 27 日，第 125 届 ECMA 大会正式批准了 ECMAScript 2023 语言规范，这意味 ...