cps2.rs

fn main() {
    repeat_cps(10, "hello", Box::new(|r| {
        println!("{:?}", r)
    }))
}

fn repeat_cps<'a, A, B>(n: i32, x: A, k: Box<Fn(A) -> B + 'a>) -> B
{
    if n == 0 {
        k(x)
    } else {
        repeat_cps(n - 1, x, Box::new(move |z| {
            k(z)
        }))
    }
}