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Oh yea, that's the good stuff huffs glue (programming.dev)

submitted 2 years ago by tatterdemalion@programming.dev to c/programmer_humor@programming.dev

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[-] tatterdemalion@programming.dev 9 points 2 years ago* (last edited 2 years ago)

Nah these are the actual integer representations. Otherwise you would have Some(None) == Some(Some(None)) which is way too Javascripty for Rust folks.

[-] GissaMittJobb@lemmy.ml 3 points 2 years ago

That's kind of wild, I double-checked and it's true.

Although I disagree with the second part, the Rust folks wouldn't care about the in-memory representation as long as the compilation is on point.

Looking closer at the final enum, I guess it's because there are nine possible cases for it, making the compiler pack it into 4 bits, with one number representing each? I checked and None is represented as 8, while 7 Somes containing a None is 0 and the full 8 Somes is represented by 1.