program to demonstrate mixin
Mixins are created using mixin keyword
Mixins are a way of reusing the code in multiple classes

mixin ElectricVariant {
  void electricVariant() {
    print('This is an electric variant');
  }
}

mixin PetrolVariant {
  void petrolVariant() {
    print('This is a petrol variant');
  }
}
// with is used to apply the mixin to the class
class Car with ElectricVariant, PetrolVariant {
  // here we have access of electricVariant() and petrolVariant() methods
}

void main() {
  var car = Car();
  car.electricVariant();
  car.petrolVariant();
}

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Another example of mixin

mixin CanFly {
  void fly() {
    print('I can fly');
  }
}

mixin CanWalk {
  void walk() {
    print('I can walk');
  }
}

class Bird with CanFly, CanWalk {
 
}

class Human with CanWalk {
 
}

void main() {
  var bird = Bird();
  bird.fly();
  bird.walk();

  var human = Human();
  human.walk();
}

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