yield examples

main.dart

import 'dart:math' as m;

class Animal {
  void chase(Animal x) {
    print("Animal $x");
  }
}

class Mouse extends Animal {}

class Cat extends Mouse {
  int _x = 5;

  set x(int m) {
    _x = m;
  }

  int get x {
    return _x;
  }

  void chase(Animal x) {
    print("x: ${x}");
  }
}

class Person {
  String firstName;

  Person.fromJson(Map data) {
    firstName = data['first'];
    print('in Person $firstName');
  }
}

class Employee extends Person {
  // Person does not have a default constructor;
  // you must call super.fromJson(data).
  int x;
  int y;
  Employee.fromJson(Map data)
      : x = 10,
        y = 20,
        super.fromJson(data) {
    print(this.x);
    print('in Employee $firstName');
  }
}

add(a, b) {
  print(a + b);
}

Stream<int> naturalsTo(List<int> list) async* {
  for (int s in list) {
    s++;
    yield s;
  }
}

void main() async {
  var x = naturalsTo([1, 2, 3, 4]);
  print(x.toList());

//   var emp = new Employee.fromJson({'first':'Me'});
//   print(emp.x);
//   print(emp.y);
//   print("1234".substring(0,2));

//   emp.firstName='John';

//   // Prints:
//   // in Person
//   // in Employee
//   if (emp is Person) {
//     // Type check
//     emp.firstName = 'Bob';
//   }
//   emp.firstName = 'Bob';

//   add(1,2);

//   var c = Cat();

//   var m = Mouse();
//   c.chase(m);

//   print(int.parse('0x10abc'));
//   print(10.toString());

//   var calc = 17.7;
// 	print(calc);
//   print(calc % 5);
//   print(calc.remainder(5));

//   double amount=calc + 3.0;
//   print(amount.runtimeType);
//   amount = 10.2;
//   print(amount.runtimeType);

//   int quantity=(10.2).floor();
//   print(quantity);

//   var myText = "Hello Text";
//   print(myText);

//   print("The power of calc is: ${calc}");
//   print("The power of calc is: ${10}");

//   var s1="Hello";
//   var s2="World";
//   print(s1+" "+s2);
}