Flutter Conventions & Best Practices

Dart 3.x Features

Pattern Matching

String describeUser(User user) {
  return switch (user) {
    User(role: 'admin', isActive: true) => 'Active administrator',
    User(role: 'user', isActive: true) => 'Active user',
    User(isActive: false) => 'Inactive account',
    _ => 'Unknown status',
  };
}

Records

(int, String) getUserInfo() => (123, 'John Doe');