我认为rust就是过100年也取代不了c++，证据如下

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主题:我认为rust就是过100年也取代不了c++，证据如下

2楼|poocp|2025-10-31 18:54:03|展开

Rust可以写得比C++短啊。

cat src/main.rs
struct Person {
    name: String,
    age: u32,
}

impl Person {
    fn greet(&self) {
        println!("Hello, I'm {} and I'm {} years old.", self.name, self.age);
    }
}

fn main() {
    let people = vec![
        Person { name: "Alice".into(), age: 25 },
        Person { name: "Bob".into(), age: 30 },
        Person { name: "Charlie".into(), age: 35 },
    ];

    for person in &people {
        person.greet();
    }
}

cargo run
   Compiling bc v0.1.0 (rs\bc)
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.09s
     Running `target\debug\bc.exe`
Hello, I'm Alice and I'm 25 years old.
Hello, I'm Bob and I'm 30 years old.
Hello, I'm Charlie and I'm 35 years old.
--
FROM 171.213.181.*

4楼|poocp|2025-11-01 05:29:13|展开
Rust用了宏之后，数据初始化可以省很多不必要的部件，只填字符串、数字和逗号就行了。
C++23也能这样初始化，但需要一个可变参数模版，我在编程技术版贴过一个，要比Rust的宏多写几行。

struct Person(String, u32);

impl Person {
    fn greet(&self) {
        println!("Hello, I'm {} and I'm {} years old.", self.0, self.1);
    }
}

macro_rules! folks {
    ($($name:expr, $age:expr),* $(,)?) => {
        vec![$(Person($name.to_string(), $age)),*]
    };
}

fn main() {
    let people = folks![
        "Alice", 25,
        "Bob", 30,
        "Charlie", 35,
    ];

    for person in &people {
        person.greet();
    }
}
--
FROM 171.213.181.*