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Stdle #129 · option · 2026-10-13

What does this Rust snippet output?

A past puzzle — fully playable. 4 attempts, hints on wrong guesses.

fn main() {
    let opt = Some(3);
    let res: Result<i32, &str> = opt.ok_or("none");
    println!("{:?}", res);
    let n: Option<i32> = None;
    println!("{:?}", n.ok_or("none"));
}
Option
2 lines
4 attempts left

Answer & explanation