gistfile1.rs

pub fn most_common(&self, n: uint) -> Vec<(K, uint)> {
    let data = self.data.clone();
    let mut counted: Vec<Counted<K>> = data.move_iter().
                                             map(|(k, v)| Counted {k: k, v: v}).collect();
    let mut n_most_common = vec!();
    let mut pq = PriorityQueue::from_vec(counted);

    for _ in range(0u, n) {
        let tmp = pq.pop().unwrap();
        // error: use of partially moved value: `tmp`
        let pair = (tmp.k, tmp.v);
        n_most_common.push(pair);
    }
    n_most_common
}