Learning happens at the keyboard

The practice bench.

Every lesson has an exercise and a solution. Use these projects to practice several skills together, and the compiler drills to learn from errors.

Build checkpoints

Build a working event counter with loops, matching, and borrowed text.

Build a library that parses records as it reads them and limits buffer growth.

Send records through a bounded queue and keep one task in charge of the counts.

Combine the parser and reader into a command-line tool you can install and use.

These six small programs fail on purpose. Read the compiler error, fix the code, and compare your answer with the solution.

Learn what moves, what gets copied, and when a borrow is enough.

Use shared and exclusive references, and see when a borrow ends.

Connect borrowed results to their inputs without trying to extend the life of data.

Move or borrow data across threads, then handle completion and failure.

Learn what pinning protects and how to return futures through a trait object.

Tell stable features apart from nightly experiments and plans that may change.

This card shows the tested ownership example from lesson 03.

The source repository contains every runnable example, the capstone, the unsafe lab, tests, and captured diagnostics.

cargo test --workspace --locked
npm run verify:rust