Code shared from the Rust Playground

playground.rs

use std::rc::Rc;
fn process_shared(data: Rc<String>, storage: &mut Vec<Rc<String>>) {
    storage.push(data.clone()); // Clones Rc, not String
}
fn main() {
    let shared = Rc::new("shared".to_string());
    let mut storage = Vec::new();
    while Rc::strong_count(&shared) < 10 {
        process_shared(shared.clone(), &mut storage);
        println!("Rc count: {}", Rc::strong_count(&shared));
    }
}