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by alschwalm 1673 days ago
It is definitely also worth mentioning the now-stabilized procedural macros [1] (unless I missed where they are described). proc macros power some of the more complex macro usage in the rust ecosystem (like rocket and actix-webs router macros, any sort of custom derive, etc).

[1]: https://doc.rust-lang.org/reference/procedural-macros.html