by Steve Klabnik and Carol Nichols, with contributions from the Rust Community
Welcome to The Rust Programming Language book! This version of the text assumes
you’re using Rust 1.31.0 or later with
edition="2018" in Cargo.toml of
all projects to use Rust 2018 Edition idioms. See the “Installation” section
of Chapter 1 to install or update Rust, and see the
new Appendix E for information on what editions of
The 2018 Edition of the Rust language includes a number of improvements that make Rust more ergonomic and easier to learn. This printing 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 that Implement Traits” that explain the new
- Chapter 11 has a new section titled “Using
Result<T, E>in Tests” that shows how to write tests that use the
- The “Advanced Lifetimes” section of Chapter 19 was removed because compiler improvements have made the constructs in that section even rarer.
- The previous Appendix D, “Macros,” has been expanded to include procedural macros and was moved to the “Macros” section in Chapter 19.
- Appendix A, “Keywords,” also explains the new raw identifiers feature that enables code written in the 2015 Edition and the 2018 Edition to interoperate.
- Appendix D is now titled “Useful Development Tools” and covers recently released tools that help you write Rust code.
- We fixed a number of small errors and imprecise wording throughout the book. Thank you to the readers who reported them!
Note that any code in the first printing of The Rust Programming Language
that compiled will continue to compile without
edition="2018" in the
project’s Cargo.toml, even as you update the Rust compiler version you’re
using. That’s Rust’s backward compatibility guarantees at work!
The HTML format is available online at
and offline with installations of Rust made with
rustup docs --book to open.
This text is available in paperback and ebook format from No Starch Press.