【08】Rust语法基础（下）

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详解移步：https://tourofrust.com/00_zh-cn.html

结构体

struct SeaCreature {
    animal_type: String,
    name: String,
    arms: i32,
    legs: i32,
    weapon: String,
}

fn main() {

    let ferris = SeaCreature {
        animal_type: String::from("螃蟹"),
        name: String::from("Ferris"),
        arms: 2,
        legs: 4,
        weapon: String::from("大钳子"),
    };

    let sarah = SeaCreature {
        animal_type: String::from("章鱼"),
        name: String::from("Sarah"),
        arms: 8,
        legs: 0,
        weapon: String::from("无"),
    };

    println!(
        "{} 是只{}。它有 {} 只胳膊 {} 条腿，还有一个{}。",
        ferris.name, ferris.animal_type, ferris.arms, ferris.legs, ferris.weapon
    );
    println!(
        "{} 是只{}。它有 {} 只胳膊 {} 条腿。它没有杀伤性武器…",
        sarah.name, sarah.animal_type, sarah.arms, sarah.legs
    );
}

枚举

#![allow(dead_code)] 

enum Species {
    Crab,
    Octopus,
    Fish,
    Clam
}

struct SeaCreature {
    species: Species,
    name: String,
    arms: i32,
    legs: i32,
    weapon: String,
}

fn main() {
    let ferris = SeaCreature {
        species: Species::Crab,
        name: String::from("Ferris"),
        arms: 2,
        legs: 4,
        weapon: String::from("claw"),
    };

    match ferris.species {
        Species::Crab => println!("{} is a crab",ferris.name),
        Species::Octopus => println!("{} is a octopus",ferris.name),
        Species::Fish => println!("{} is a fish",ferris.name),
        Species::Clam => println!("{} is a clam",ferris.name),
    }
}