trpl-zh-cn/listings/ch18-patterns-and-matching/listing-18-11/src/main.rs

fn main() {
    // ANCHOR: here
    let x = Some(5);
    let y = 10;

    match x {
        Some(50) => println!("Got 50"),
        Some(y) => println!("Matched, y = {:?}", y),
        _ => println!("Default case, x = {:?}", x),
    }

    println!("at the end: x = {:?}, y = {:?}", x, y);
    // ANCHOR_END: here
}