Exemple #1
0
        public static void Run()
        {
            StringDataStore strStore = new StringDataStore();

            strStore[0] = "One";
            strStore[1] = "Two";
            strStore[2] = "Three";
            strStore[3] = "Four";

            for (int i = 0; i < 10; i++)
            {
                Console.WriteLine(strStore[i]);
            }
        }
        public static void Run()
        {
            Person p = new Person("Alice", "Moureau");

            if (p is Student)
            {
                Console.WriteLine("It's a student");
            }
            else
            {
                Console.WriteLine("It's not a student");
            }

            int?x = null;

            // Set y to the value of x if x is NOT null; otherwise,
            // if x = null, set y to -1.
            int y = x ?? -1;

            // Ternary operator
            int z = x == null ? 5 : 10;

            StringDataStore store = new StringDataStore();

            int?   length = p?.Age;    // null if customers is null
            string str    = store?[0]; // null if customers is null

            // int? count = customers?[0]?.Orders?.Count();  // null if customers, the first customer, or Orders is null

            switch (z)
            {
            case 5:
                Console.WriteLine("Value of variable is 5");
                break;

            case 10:
                Console.WriteLine("Value of variable is 10");
                break;

            default:
                Console.WriteLine("Unknown value");
                break;
            }
        }