查看“︁Rust futures”︁的源代码

= Result =
== Unwrap ==
<syntaxhighlight lang="rust">
fn get_url(name: &String) -> Result<String, i32> {
    match name.as_str() {
        "Google" => Ok(String::from("https://google.com")),
        "Bing" => Ok(String::from("https://bing.com")),
        "" => Err(1),
        _ => Err(2),
    }
}

fn main() {
    let site: String = String::from("Google");
    let url: String = get_url(&site).unwrap();
    println!("Url of {} is {}", site, url);
    // Url of Google is https://google.com
}

</syntaxhighlight>


[[Category:Rust]]