use core::ops::Index;

struct Container {
    item: u32,
}

impl Container {
    pub fn new() -> Container {
        Container {item: 0}
    }
}


fn main() {
    let con = Container::new();

    println!("{:?}", con["hej"]);
    println!("{:?}", con[100]);
}



impl Index<&str> for Container {
    type Output = u32;

    fn index(&self, idx: &str) -> &u32 {
        if idx == "hej" {
            &10
        } else {
            &20
        }
    }
}



impl Index<u64> for Container {
    type Output = u32;

    fn index(&self, idx: u64) -> &u32 {
        &1000
    }
}