Dart Mixins

main.dart

abstract class Animal {}


abstract class Mamal extends Animal { }


abstract class Bird extends Animal { }


abstract class Fish extends Animal { }


abstract class Walker {
  
  void walk() => print("Im walking");
  
}


abstract class Swimer {
  
  void swim() => print("Im swiming");
  
}


abstract class Flyer {
  
  void fly() => print("Im flying");
  
}

class Dolphin extends Mamal with Swimer {
  
  
}

class Bat extends Mamal with Walker, Flyer {
  
}

class Cat extends Mamal with Walker {
  
}

class Dove extends Bird with Walker, Flyer {
  
}

class Duck extends Bird with Walker, Flyer, Swimer {
  
}

class Shark extends Fish with Swimer {
  
}

class FlyingFish extends Fish with Swimer, Flyer {
  
}

void main(){
  final duck = new Duck();
  duck.fly();
  duck.swim();
  duck.walk();
  
  final flyingFish = new FlyingFish();
  flyingFish.fly();
  flyingFish.swim();
   
}