fn main() {
let id = Some(42);
match id {
Some(x) => if x == 10 { println!("{}", x) },
None => println!("hm")
}
}
Zm4gbWFpbigpIHsKICAgIGxldCBpZCA9IFNvbWUoNDIpOwogICAgCiAgICBtYXRjaCBpZCB7CiAgICAJU29tZSh4KSA9PiBpZiB4ID09IDEwIHsgcHJpbnRsbiEoInt9IiwgeCkgfSwKICAgIAlOb25lCT0+IHByaW50bG4hKCJobSIpCiAgICB9Cn0=