module strategy.app;

import strategy.duck;
import strategy.flybehavior;

void main()
{
    Duck mallard = new MallardDuck;
    mallard.performQuack();
    mallard.performFly();

    Duck model = new ModelDuck;
    model.performQuack();
    model.performFly();
    model.setFlyBehavior(new FlyRocketPowered);
    model.performFly();
}