gistfile1.rs

extern crate arena;

#[derive(Show)]
enum Node<'a> {
    Cons(u32, &'a Node<'a>),
    Nil
}

fn main() {
    let a = arena::TypedArena::new();
    let n1 = a.alloc(Node::Nil);
    let n2 = a.alloc(Node::Cons(42, n1));
    println!("{:?}", n2);
}