Rust RemAssign用法及代碼示例

use std::ops::RemAssign;

struct CookieJar { cookies: u32 }

impl RemAssign<u32> for CookieJar {
    fn rem_assign(&mut self, piles: u32) {
        self.cookies %= piles;
    }
}

let mut jar = CookieJar { cookies: 31 };
let piles = 4;

println!("Splitting up {} cookies into {} even piles!", jar.cookies, piles);

jar %= piles;

println!("{} cookies remain in the cookie jar!", jar.cookies);