% Generics
There is a new edition of the book and this is an old link.
> Generics are abstract stand-ins for concrete types or other properties.
```rust
struct Point {
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]**
* [In the first edition: Ch 3.18 — Generics][1]
[1]: https://doc.rust-lang.org/1.30.0/book/first-edition/generics.html
[2]: ch10-00-generics.html