multi_index.rs

use std::vec;

struct IndexableThing;

impl Index<uint, ~str> for IndexableThing {
    fn index(&self, rhs: &uint) -> ~str {
        (*rhs).to_str()
    }
}

impl Index<uint, ~[uint]> for IndexableThing {
    fn index(&self, rhs: &uint) -> ~[uint] {
        vec::from_fn(*rhs, |i| i)
    }
}

fn main() {
    let thing = IndexableThing;
    let thing_str: ~str = thing[5];
    println(thing_str);
    let thing_vec: ~[uint] = thing[5];
    println(fmt!("%?", thing_vec));
}