オブジェクト指向はオワコン？ part2

>>268
Rustはこんな感じ

use std::fmt;

struct FizzBuzz(usize);

impl fmt::Display for FizzBuzz {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let fizz = self.0 % 3 == 0;
if fizz {
write!(f, "Fizz")?;
}
let buzz = self.0 % 5 == 0;
if buzz {
write!(f, "Buzz")?;
}
if !fizz && !buzz {
write!(f, "{}", self.0)?;
}
Ok(())
}
}