PREFACE
This new version of the text assumes you’re using Rust 1.53.0 or later with edition="2018" in Cargo.toml of all projects to use Rust 2018 Edition idioms. See “Installation” on page 1 to install or update Rust, and see the new Appendix E for information on editions.
The 2018 Edition of the Rust language includes a number of improvements that make Rust more ergonomic and easier to learn. This rendition of the book contains a number of changes to reflect those improvements:
- Chapter 7, “Managing Growing Projects with Packages, Crates, and Modules,” has been mostly rewritten. The module system and the way paths work in the 2018 Edition were made more consistent.
- Chapter 10 has new sections titled “Traits as Parameters” and “Returning Types ...
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