Rustlings - Alexis Bouchez

Rustlings

The official rustlings curriculum, served as a freeCodeCamp-style workbench: editor on one side, instructions and hints on the other, a real Rust compiler one keystroke away. Compilation runs on play.rust-lang.org; your progress lives in your browser.

94 exercises · 25 chapters

Start with intro1

Curriculum

Get used to the workbench. Print to the screen and run code.

let, mut, shadowing, and the difference between bindings.

Define and call functions. Argument and return types.

Branching with if, else if, and if as an expression.

Primitive Types

Booleans, integers, floats, chars, tuples, and arrays.

Heap-allocated, growable arrays. Push, pop, and iterate.

Ownership rules: move, borrow, and the borrow checker.

Group related data. Tuple, named, and unit structs.

Sum types with variants. Pattern-match exhaustively.

&str vs. String. Slicing, conversion, and ownership.

Organise code with mod, pub, and use.

Key/value storage. Insert, lookup, and iteration.

Encode absence with Option<T>. Unwrap safely.

Result, ?, and propagating recoverable errors.

Write code that works for any type.

Define shared behaviour and implement it across types.

Annotations that make borrows provably safe.

#[test], assertions, and cargo test.

Standard Library Types

Standard library types and lazy iteration.

Box, Rc, RefCell. Heap ownership patterns.

Spawn threads, share data with Arc and Mutex.

macro_rules! and procedural macros.

Idiomatic Rust through the official linter.

Type Conversions

From, Into, TryFrom, and explicit casts.