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% Procedural Macros (and custom Derive)
<small>There is a new edition of the book and this is an old link.</small>
> Procedural macros allow for all sorts of advanced metaprogramming in Rust.
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This chapter does not exist yet in [the second edition][2].
You can check out other resources that describe macros.
* **[In the current edition: Ch 19.06 Macros][2]**
* [In the Rust Reference: Ch 3.2 Procedural Macros][4]
* [The `proc_macro` crate documentation][3]
* <small>[In the first edition: Ch 4.13 Procedural Macros (and custom Derive)][1]</small>
[1]: https://doc.rust-lang.org/1.30.0/book/first-edition/procedural-macros.html
[2]: ch20-06-macros.html
[3]: ../proc_macro/index.html
[4]: ../reference/procedural-macros.html