% Ownership

There is a new edition of the book and this is an old link.

> 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.

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Here are the relevant sections in the new and old books:

* **[In the second edition: Ch 4.00 — Understanding Ownership][2]**
* [In the first edition: Ch 3.8 — Ownership][1]

[1]: first-edition/ownership.html
[2]: second-edition/ch04-00-understanding-ownership.html
