Code shared from the Rust Playground

playground.rs

use lazy_static; // 1.4.0
use std::collections::HashMap;

#[derive(Copy, Clone, Debug)]
pub struct Server {}

lazy_static::lazy_static! {
    static ref SERVER1: Server = Server {};
    static ref SERVER2: Server = Server {};
    
    pub static ref RAW: HashMap<&'static str, &'static Server> = [
        ("domain1.com", &*SERVER1),
        ("domain1.org", &*SERVER1),
        ("domain2.com", &*SERVER2),
    ].iter().copied().collect();
}

fn main() {

    let server = RAW.get("domain1.org");
    println!("{:?}", server);
}