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A lot of people didn't know! I made sure to put it in the book explicitly: https://doc.rust-lang.org/book/second-edition/ch18-01-all-th...

Huh, was that also in the first edition?

I learned using that and if this pattern matching pattern (heh) is indeed in there, I must have overread it...

I’m not sure, to be honest, it’s been a long time!

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