Some Docs

gistfile1.txt

void main() {
  print('>>>  Application started... Hello World!');
  Admin adminuser = Admin('root', 99);
  adminuser.login();
  User currentUser = User('Jack u1', 30);
  currentUser.login();
  print(currentUser.greeting());
  adminuser.publish();
  currentUser.logout();
 
}




/* ====================
 * Functions in Dart
 * ====================
 */
int getAge(){ return 30; }

String hi() => 'Hi There.';





/* ====================
 * Types in Dart
 * ====================
 */
String name = 'John';
int grade = 100;
dynamic anyType = 'can be string or number';
bool isTrue = true;
List<String> people = [];





/* ====================
 * Classes in Dart
 * ====================
 */


class User {
  String name;
  int age;
  
  User(this.name,this.age);
  
  void login() => print('msg: $name has logged in.');
  
  String greeting() => '>>>  Hi $name, your are $age years old.';
  
  void logout() => print('msg: $name has been logged out.');
  
}

class Admin extends User {
  
  Admin(String name, int age) : super(name,age);
  
  void publish() {
    print('$name has made core changes***');
  }
}