Shared via Rust Playground

playground.rs

use std::rc::{Rc, Weak};

fn main() {
    let mut col = Collection::<String>::new();
    col.push("12345".to_string());
}

struct Collection<'a, T: 'a> {
    items: Vec<Weak<CollectionItem<'a, T>>>
}

struct CollectionItem<'a, T: 'a> {
    owner: &'a Collection<'a, T>,
    value: T
}

impl<'a, T: 'a> Collection<'a, T> {
    fn new() -> Self {
        Collection {
            items: Vec::new()
        }
    }

    fn push(&'a mut self, value: T) {
        
    }
}