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Previous discussion: https://news.ycombinator.com/item?id=29747921 https://news.ycombinator.com/item?id=29747921 (617 points | Dec 31, 2021 | 195 comments)

• hinkley 3y ago
  > Therefore the Arc had to stay. Instead of using a single Arc value we can use one Arc per thread. I thought the title sounded familiar, and the culprit is more or less the same (false or in this case unnecessary sharing). But I didn’t think it was quite that long ago, so maybe it’s two articles about the same classic blunder.