hash.rs

extern crate collections;

use collections::HashMap;

struct Item {
    id: int,
    name: StrBuf,
}

fn build_hash(vec: Vec<Item>) -> HashMap<int, Item> {
    let mut h = HashMap::new();

    for item in vec.move_iter() {
        h.insert(item.id, item);
    }
    return h;
}

fn main() {
    let i1 = Item {id: 1, name: StrBuf::from_str("name")};
    let i2 = Item {id: 2, name: StrBuf::from_str("name 2")};

    let vec = vec![i1, i2];
    let h = build_hash(vec);

    for (k, v) in h.iter() {
        println!("({:?}, {})", *k, v.name);
    }
}

output

❯❯❯ rustc hash.rs && ./hash
(2, name 2)
(1, name)