Rust, edition 2024

A hands-on tour of Rust,
one small runnable lesson at a time.

Sixty lessons, one topic each. Every lesson opens with an explanation, then works through the topic in small examples with the output they print. Code the compiler rejects is shown commented out, with the real error it produces.

Start with lesson 01 Clone the repo

Lessons

Examples

392

Compiler errors explained

Lines of Rust

11,773

Basics01–09

01Print Format 02Variables 03Scalar types: integers 04Tuples and arrays 05Operators 06Functions 07Control flow: if 08Match 09Patterns: slices

Ownership and borrowing10–13

10Ownership and moves 11Clone and Copy 12References and borrowing 13Slices and string slices

Structs, enums, and errors14–19

14Structs: named 15Methods and associated functions 16Enums 17Option 18Result and the ? operator 19Custom errors

Standard traits20–24

20Conversions: From 21Display 22Equality 23Drop Deref 24String vs &str

Generics and traits25–29

25Generics and trait bounds 26Traits 27Impl Trait vs dyn Trait 28Newtypes and extension traits 29Operator overloading and indexing

Iterators, closures, and lifetimes30–35

30Iterators and IntoIterator 31Iterator adapters and consumers 32Iterator sources: from_fn 33Closures and Fn 34Lifetimes 35'static and lifetime bounds

Collections36–39

36Vec 37HashMap 38HashSet and BTreeSet 39VecDeque

Smart pointers and concurrency40–46

40Box Rc Weak 41Cell Refcell 42One-time initialization: Once 43Threads: spawn 44Shared state: Arc 45Channels: mpsc 46Sync Primitives

The standard library47–52

47Files and the Read 48Fs Paths 49Processes 50Duration 51Strings: methods 52Std::mem: sizes

Organizing code53–56

53Modules 54Tests Docs 55Declarative macros with macro_rules!56Const fn

Advanced57–60

57Type-level tools: PhantomData 58Async/await 59Unsafe 60FFI and repr: calling C

A hands-on tour of Rust, one small runnable lesson at a time.