On this page

枚举1: exercises/enums/enums1.rs

题目

rust

// enums1.rs
//
// No hints this time! ;)

// I AM NOT DONE

#[derive(Debug)]
enum Message {
    // TODO: define a few types of messages as used below
}

fn main() {
    println!("{:?}", Message::Quit);
    println!("{:?}", Message::Echo);
    println!("{:?}", Message::Move);
    println!("{:?}", Message::ChangeColor);
}

题目解析

这个题目主要就是枚举体enum的定义：

rust

#[derive(Debug)]
enum Message {
    // TODO: define a few types of messages as used below
    Quit, 
    Echo, 
    Move, 
    ChangeColor, 
}

参考资料

枚举体的定义