Rc与Arc #

use std::rc::Rc;

fn main() {
    let a = Rc::new(5);
    let b = Rc::clone(&a);
    let c = Rc::clone(&a);
    
    println!("引用计数: {}", Rc::strong_count(&a));
}

use std::sync::Arc;
use std::thread;

fn main() {
    let data = Arc::new(vec![1, 2, 3]);
    
    let data_clone = Arc::clone(&data);
    thread::spawn(move || {
        println!("{:?}", data_clone);
    });
}