> bob taught me about what a weak map should really do: keep a value alive when ... | Hacker News

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		bgirard on April 5, 2023 \| parent \| context \| favorite \| on: Remembering Bob Lee > bob taught me about what a weak map should really do: keep a value alive when both the map and the key are alive. It blew my mind. Can you share more details? That's so counter intuitive to how I think of WeakMaps and I would like to know more.

pizlonator on April 5, 2023 [–]

I called it a “weak map” rather than “WeakMap” deliberately. Bob was describing what he wanted, not what he got.

However, if memory serves, the JS weak map has the semantics bob wanted: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...

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