use std::collections::HashMap;

lazy_static! {
    pub static ref MAP: HashMap<&'static str, &'static str> = {
        let mut map = HashMap::new();
        map.insert("key", "value");
        map
    };
}

fn main() {
    invert()
}

fn invert() {
    let x = MAP.into_iter().map(|(k, v)| (v, k)).collect::<HashMap<_, _>>();

    println!("{:?}", x.get("value"));
}