Maybe not as comprehensive or approachable:

Julia: https://juliadiff.org/ChainRulesCore.jl/stable/FAQ.html#Wher...? (bottom)

OCaml: https://ocaml.xyz/book/

The Fast Food Transform?

That tool is broken, it only transforms belly size :(

In a way that works like my time machine, only goes one direction.

Rust in peace, Anna.

I now realise what the other meaning of this is. I sincerely apologise, Anna. I do wish that you rest in peace, knowing that you made long-lasting contributions to Rust.