Small Rust binary example

build.sh

#!/bin/sh
cargo +nightly build --release -Z build-std=std,panic_abort \
  -Z build-std-features=optimize_for_size,panic_immediate_abort

Cargo.toml

[package]
name = "hello"
version = "0.1.0"
edition = "2024"

[dependencies]
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0"

[profile.release]
strip = true
opt-level = "z"
lto = true
panic = "abort"

main.rs

use serde::Serialize;

// MARK: Person
#[derive(Serialize)]
struct Person {
    name: String,
    age: u32,
}

impl Person {
    fn new(name: String, age: u32) -> Self {
        Person { name, age }
    }
}

// MARK: Main
fn main() {
    let mut persons = Vec::new();
    persons.push(Person::new("Alice".to_string(), 30));
    persons.push(Person::new("Bob".to_string(), 25));
    persons.push(Person::new("Charlie".to_string(), 35));
    persons.push(Person::new("Diana".to_string(), 28));

    println!("{}", serde_json::to_string(&persons).unwrap());
}