use std::collections::HashMap;

​

fn main() {

  let mut capitalCities = HashMap::new();

​

  capitalCities.insert("England", "London");

  capitalCities.insert("Germany", "Berlin");

  capitalCities.insert("Norway", "Oslo");

  if let Some(city) = capitalCities.get("England") {

    println!("The capital of England is {}.", city);

  } else {

    println!("England is not in the map.");

  }

}