[Dart] 3일차_함수형 프로그래밍_활용

1)

void main() {
  List<Map<String, String>> people = [
    {
      'name': '로제',
      'group': '블랙핑크',
    },
    {
      'name': '지수',
      'group': '블랙핑크',
    },
    {
      'name': 'RM',
      'group': 'BTS',
    },
    {
      'name': '뷔',
      'group': 'BTS',
    },
  ];

  print(people);

  final parsedPeople =
      people.map((x) => Person(name: x['name']!, group: x['group']!)).toList();

  print(parsedPeople);

  final bts = parsedPeople.where((x) => x.group == 'BTS');

  print(bts);

  final result = people
      .map((x) => Person(
            name: x['name']!,
            group: x['group']!,
          ))
      .where((x) => x.group == 'BTS');

  print(result);
}

class Person {
  final String name;
  final String group;

  Person({
    required this.name,
    required this.group,
  });

  @override
  toString() {
    return 'Person(name:$name,group:$group)';
  }
}