private static void ObserverScenario()
{
var joao = new Observer("João");
var eduardo = new Observer("Eduardo");
var bill = new Observer("Bill");
var amazon = new StockExchange("Amazon", NextDecimal());
var microsoft = new StockExchange("Microsoft", NextDecimal());
amazon.Subscribe(joao);
amazon.Subscribe(eduardo);
microsoft.Subscribe(eduardo);
microsoft.Subscribe(bill);
Console.WriteLine("");
Console.WriteLine("------------------");
Console.WriteLine("");
for (int i = 0; i < 5; i++)
{
amazon.Value = NextDecimal();
microsoft.Value = NextDecimal();
if (i == 1)
{
amazon.UnSubscribe(eduardo);
}
}
}