use std::cell::LazyCell;

#[derive(Debug)]
struct WeatherMap {}

fn get_weather_map() -> LazyCell<WeatherMap> {
    println!("Getting weather maps..");
    LazyCell::new(|| WeatherMap{})
}

let map: LazyCell<WeatherMap>  = get_weather_map();
println!("Before accessing the map");
println!("Got weather maps: {:?}", map);