public static ClassicSingleton getInstance()
{
if (instance == null)
{
instance = new ClassicSingleton();
}
return(instance);
}
public static void Main(string[] args)
{
Console.WriteLine("\n\n\r===========Working with Strategy Pattern=======");
RedHeadDuck redHeadDuck = new RedHeadDuck();
redHeadDuck.PerformFly();
redHeadDuck.PerformQuack();
redHeadDuck.Swim();
redHeadDuck.Display();
Console.WriteLine("\n\rSetting the Behaviour for Ducks that exibit different Behaviours");
RubberDuck rubberDuck = new RubberDuck();
rubberDuck.PerformFly();
rubberDuck.SetFlyBehaviour(new FlyWithRockets());
rubberDuck.PerformFly();
rubberDuck.PerformQuack();
Console.WriteLine("\n\n\r===========Working with Observer Pattern=======");
WeatherData WeatherData = new WeatherData();
ForecastDisplay forcastDisplay = new ForecastDisplay(WeatherData);
WeatherData.WeatherMeasurements(15, 20, 25);
Console.WriteLine("\n\n\r===========Working with Classic Singleton=======");
ClassicSingleton classicSingleton = ClassicSingleton.GetInstance();
classicSingleton.Description();
Console.WriteLine("\n\n\r===========Working with Static Singleton=======");
StaticSingleton staticSingleton = StaticSingleton.GetInstance();
staticSingleton.Description();
Console.WriteLine("\n\n\r===========Working with Singleton using syncronization=======");
SingletonUsingSyncronization syncronizedSingleton = SingletonUsingSyncronization.GetInstance();
syncronizedSingleton.Description();
Console.WriteLine("\n\n\r===========Working with Factory Design Pattern=======");
SimplePizzaFactory factory = new SimplePizzaFactory();
PizzaStore store = new PizzaStore(factory);
Pizza pizza = store.OrderPizza("Cheese");
Console.WriteLine(pizza.ToString());
Console.WriteLine("\nState Machine Design Pattern");
GumballMachine machine = new GumballMachine(5);
Console.WriteLine(machine);
machine.InsertQuarter();
machine.EjectQuarter();
machine.TurnCrank();
Console.WriteLine(machine);
Console.WriteLine("\n Working with Iterators");
DinnerMenu dinnerMenu = new DinnerMenu();
DesignPatterns.Iterator.Iterator iterator = dinnerMenu.CreateIterator();
while (iterator.HasNext())
{
var current = iterator.Next();
Console.WriteLine(current);
}
Console.WriteLine("\n============================");
PanCakeHouseMenu panMenu = new PanCakeHouseMenu();
DesignPatterns.Iterator.Iterator panIterator = panMenu.CreateIterator();
while (panIterator.HasNext())
{
var current = panIterator.Next();
Console.WriteLine(current);
}
}
