println!("scores after doubling: {:?}", scores);
// double scores of immutable hashmap (rebuild it)
- let collect_scores: HashMap<_, _> = collect_scores.iter()
+ let collect_scores: HashMap<_, _> = collect_scores.into_iter()
.map(|(k, v)| (k, 2 * v))
.collect();
println!("collect_scores after rebuilding with doubling: {:?}", collect_scores);