Refactoring Rust

Hands-on exercises for writing more idiomatic, maintainable Rust.

With Rustlings and 100 exercises to learn Rust, there exist two excellent resources for learning Rust.

What I found to be lacking was a more advanced course, which teaches Rust idioms and patterns by means of refactoring exercises, for typical real-world scenarios.

That's what "Refactoring Rust" is all about.

Each exercise asks you to take a small, working-but-awkward piece of code and make it more idiomatic. There is typically more than one good answer. The goal is not to be a definitive source of truth, but rather to give us something concrete to talk about.

Running an exercise

cargo run --example 01_starts_with_uppercase
cargo test --example 01_starts_with_uppercase

Overview

The examples are numbered roughly by complexity. We'll start with quick warm-ups everyone can finish in a few minutes and gradually move into larger structural refactors. Feel free to skip around: each example is self-contained.