Rust quiz

Test your Rust knowledge with a free interactive quiz — 50 questions with answers and explanations. No signup needed to play.

What is "ownership" in Rust?

1. What is "ownership" in Rust?
2. What does the `?` operator do at the end of an expression?
3. What is `Option<T>`?
4. What does `let mut x = 5; x = 6;` do?
5. What does `if let Some(x) = opt { … }` do?
6. What is a `Box<T>`?
7. How do you add methods to a struct?
8. What is the difference between `String` and `&str`?
9. What does `&value` produce?
10. What does this code do: `let s = String::from("hi"); let t = s; println!("{}", s);`?
11. What does this iterate: `for x in 0..5 { … }`?
12. What does the borrow checker prevent at compile time?

More quizzes