rust programming snippet

    let mut hm = HashMap::new();

    hm.insert(String::from("kalimera"), 1);
    hm.insert(String::from("kalinuxta"), 2);
    hm.insert(String::from("Kalispera"), 3);

    println!("hm: {:#?}", hm);

/// I need to call Use first, not included in the Prelude
use std::collections::HashMap;

let teams  = vec![String::from("Blue"), String::from("Yellow")];
let initial_scores = vec![10, 50];

let scores: HashMap<_, _> = teams.iter().zip(initial_scores.iter()).collect();