Writing an (Overly) Idiomatic Fizzbuzz with Rust
看看这个教程，为 i32 数据类型添加 trait , 以及模式匹配的用法。
pub trait Fizzy {
fn fizzy(&self) -> String;
}
impl Fizzy for i32 {
fn fizzy(&self) -> String {
match (self % 3, self % 5) {
(0, 0) => String::from("FizzBuzz"),
(0, _) => String::from("Fizz"),
(_, 0) => String::from("Buzz"),
_ => format!("{}", self),
}
}
}
fn main() {
for x in 1..=100 {
println!("{}", x.fizzy())
}
}
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