Beginner
Rust
Q17 / 100
What is a lifetime in Rust?
Correct! Well done.
Incorrect.
The correct answer is B) An annotation describing how long a reference is valid, ensuring references do not outlive the data they point to
B
Correct Answer
An annotation describing how long a reference is valid, ensuring references do not outlive the data they point to
Explanation
Lifetime annotations ('a) on references let the compiler verify references don't outlive their data: fn longest<'a>(x: &'a str, y: &'a str) -> &'a str.
Progress
17/100