I disagree. Whenever there is a null pointer in the API, you could (and probably... | Hacker News

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		whyever on March 14, 2023 \| parent \| context \| favorite \| on: Switching from C++ to Rust I disagree. Whenever there is a null pointer in the API, you could (and probably should) be using a sum type instead. Sum types are not novel (Standard ML had them 40 years ago), but I think they are indeed a game changer.

blub on March 18, 2023 [–]

You’ve described std::optional, a special case of std::variant.

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