Rust匹配/match
Rust通過關鍵字匹配,可用於像C開關提供模式匹配。
fn main() {
let number = 13;
// TODO ^ Try different values for `number`
println!("Tell me about {}", number);
match number {
// Match a single value
1 => println!("One!"),
// Match several values
2 | 3 | 5 | 7 | 11 => println!("This is a prime"),
// Match an inclusive range
13...19 => println!("A teen"),
// Handle the rest of cases
\_ => println!("Ain't special"),
}
let boolean = true;
// Match is an expression too
let binary = match boolean {
// The arms of a match must cover all the possible values
false => 0,
true => 1,
// TODO ^ Try commenting out one of these arms
};
println!("{} -> {}", boolean, binary);
}
相關閱讀:
Rust匹配析構元組
Rust解構枚舉
Rust指針和引用
0 條評論,你可以發表評論,我們會進行改進
