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% Ownership
<small>There is a new edition of the book and this is an old link.</small>
> Ownership is Rust’s most unique feature, and it enables Rust to make memory safety guarantees without needing a garbage collector.
>
> 1. Each value in Rust has a variable that’s called its _owner_.
> 2. There can only be one owner at a time.
> 3. When the owner goes out of scope, the value will be dropped.
---
Here are the relevant sections in the new and old books:
* **[in the current edition: Ch 4.00 — Understanding Ownership][2]**
* <small>[In the first edition: Ch 3.8 — Ownership][1]</small>
[1]: https://doc.rust-lang.org/1.30.0/book/first-edition/ownership.html
[2]: ch04-00-understanding-ownership.html
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