static void Main(string[] args)
{
Console.WriteLine("Hello World!");
// where are all Generic Collections located in .NET?
// System.Collections.Generic.
// while using generics there is not casting or boxing
// generic list
var numbers = new GenericList <int>();
numbers.Add(10);
var books = new GenericList <Book>();
books.Add(new Book());
// generic dictionary
var dictionary = new GenericDictionary <string, Book>();
dictionary.Add("1234", new Book());
// using class with value constraint
var num = new Nullable <int>(5);
System.Console.WriteLine("Has Value? " + num.HasValue);
System.Console.WriteLine("Value: " + num.GetValueOrDefault());
var numNull = new Nullable <int>();
System.Console.WriteLine("Has Value? " + numNull.HasValue);
System.Console.WriteLine("Value: " + numNull.GetValueOrDefault());
}
static void Main(string[] args)
{
var book = new Book {
Isbn = "1332", Title = "C#"
};
var numbers = new GenericList <int>();
numbers.Add(10);
var books = new GenericList <Book>();
books.Add(new Book());
var dictionary = new GenericDictionary <string, Book>();
dictionary.Add("2213", new Book());
var number = new Nullable <int>(5);
System.Console.WriteLine("Has Value ? " + number.HasValue);
System.Console.WriteLine("Value: " + number.GetValueOrDefault());
Console.ReadKey();
}