Dart example: Iterating through a Map

iterating_through_a_Map.dart

void main(){
  Map<String, int> scores = {'Bob': 300};
  print('Initial state of the scores Map: $scores');

  for (var key in ['Bob', 'Rohan', 'Sophena']) {
    scores.putIfAbsent(key, () => key.length);
  }

  for (MapEntry entry in scores.entries){
    print('scores[\'${entry.key}\']: ${entry.value}');
  }  

  List listOfKeys = scores.keys.toList();
  print('list of keys: $listOfKeys');

  List listOfValues = scores.values.toList();
  print('list of values: $listOfValues');
  
  Map mapFromIterables = Map.fromIterables(listOfKeys, listOfValues);
  print('map from Iterables: $mapFromIterables');
}