public StockObserver(StockGrabber SG)
{
var stockGrabber = new StockGrabber();
this.observerID = ++observerIDTracker;
Console.WriteLine("New observer " + this.observerID);
stockGrabber.register(this);
}
static void Main(string[] args)
{
StockGrabber stockGrabber = new StockGrabber();
StockObserver observer1 = new StockObserver();
stockGrabber.Register(observer1);
stockGrabber.IbmPrice = 197.00;
stockGrabber.AaplPrice = 197.00;
stockGrabber.GoogPrice = 197.00;
stockGrabber.NotifyObservers();
StockObserver observer2 = new StockObserver();
stockGrabber.Register(observer2);
stockGrabber.IbmPrice = 297.00;
stockGrabber.AaplPrice = 297.00;
stockGrabber.GoogPrice = 297.00;
stockGrabber.Unregister(observer1);
stockGrabber.NotifyObservers();
var getIBM = new GetTheStock(stockGrabber, 2, "IBM", 197.00);
var getAAPL = new GetTheStock(stockGrabber, 2, "AAPL", 677.60);
var getGOOG = new GetTheStock(stockGrabber, 2, "GOOG", 676.40);
new Thread(new ThreadStart(getIBM.Run)).Start();
new Thread(new ThreadStart(getAAPL.Run)).Start();
new Thread(new ThreadStart(getGOOG.Run)).Start();
}
static void Main(string[] args)
{
StockGrabber stockGrabber = new StockGrabber();
StockObserver observer1 = new StockObserver(stockGrabber);
stockGrabber.setStockPrice(123.12);
}
static void Main(string[] args)
{
StockGrabber stockGrabber = new StockGrabber();
StockObserver observer01 = new StockObserver(stockGrabber);
stockGrabber.setIBMPrice(190.50);
stockGrabber.setApplePrice(670.25);
stockGrabber.setGooglePrice(700.75);
Console.ReadLine();
}
/*
* Defines one-to-many dependencies between objects so that the state one changes, all dependent objects are notified.
* Contains two main actors, Subject which notifies change and Observer that receives and acts on updates
* Loose coupling is a benefit. However, Subject may send updates that don't matter to Observer.
*/
static void Main(string[] args)
{
var stockGrabber = new StockGrabber();
var observer1 = new Observer1();
var observer2 = new Observer2();
stockGrabber.Register(observer1);
stockGrabber.Register(observer2);
stockGrabber.SetPrice(100.00);
Console.ReadLine();
}
static void Main(string[] args)
{
StockGrabber stockGrabber = new StockGrabber();
StockObserver observer1 = new StockObserver(stockGrabber);
stockGrabber.setIBMPrice(197.00);
stockGrabber.setAAPLPrice(247.00);
stockGrabber.setGOOGLPrice(537.00);
Console.Read();
}
static void Main(string[] args)
{
StockGrabber stockGrabber = new StockGrabber();
StockObserver observerOne = new StockObserver(stockGrabber);
stockGrabber.setIBMPrice(157.25);
stockGrabber.setAAPLPrice(257.54);
stockGrabber.setGOOPrice(358.84);
StockObserver observerTwo = new StockObserver(stockGrabber);
stockGrabber.setIBMPrice(158.65);
stockGrabber.setAAPLPrice(247.67);
stockGrabber.setGOOPrice(375.25);
}
