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+% Traits
+
+<small>There is a new edition of the book and this is an old link.</small>
+
+> Traits abstract over behavior that types can have in common.
+
+```rust
+pub trait Summarizable {
+ fn summary(&self) -> String;
+}
+```
+
+---
+
+Here are the relevant sections in the new and old books:
+
+* **[in the current edition: Ch 10.02 — Traits][2]**
+* [in the current edition: Ch 19.03 — Advanced Traits][3]
+* <small>[In the first edition: Ch 3.19 — Traits][1]</small>
+
+
+[1]: https://doc.rust-lang.org/1.30.0/book/first-edition/traits.html
+[2]: ch10-02-traits.html
+[3]: ch19-03-advanced-traits.html