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+% Generics
+
+<small>There is a new edition of the book and this is an old link.</small>
+
+> Generics are abstract stand-ins for concrete types or other properties.
+
+```rust
+struct Point<T, U> {
+    x: T,
+    y: U,
+}
+
+fn main() {
+    let both_integer = Point { x: 5, y: 10 };
+    let both_float = Point { x: 1.0, y: 4.0 };
+    let integer_and_float = Point { x: 5, y: 4.0 };
+}
+```
+
+---
+
+Here are the relevant sections in the new and old books:
+
+* **[in the current edition: Ch 10.00 — Generic Types, Traits, and Lifetimes][2]**
+* <small>[In the first edition: Ch 3.18 — Generics][1]</small>
+
+
+[1]: https://doc.rust-lang.org/1.30.0/book/first-edition/generics.html
+[2]: ch10-00-generics.html
+