static void Main(string[] args)
{
var book = new Book()
{
Isbn = "123321", Title = "Test"
};
GenericList <Book> books = new GenericList <Book>();
books.Add(new Book());
}
static void Main(string[] args)
{
GenericList <int> test = new GenericList <int>(3);
test.Add(1);
test.Add(2);
test.Add(3);
test.Add(4);
test.Add(5);
test.Insert(1, 33);
test.Insert(0, 22);
test.Insert(6, 66);
Console.WriteLine("List:");
Console.WriteLine(test);
Console.WriteLine("Min: {0}", test.Min());
Console.WriteLine("Max: {0}", test.Max());
test.RemoveAt(4);
Console.WriteLine(test);
Console.WriteLine("Position of '1' = {0}", test.IndexOf(1));
Console.WriteLine("Position of '33' = {0}", test.IndexOf(33));
}
static void Main(string[] args)
{
var nonGeneric = new NonGenericList();
nonGeneric.Add(1);
var generic = new GenericList <int>();
generic.Add(1);
var generic2 = new GenericList <string>();
generic2.Add("test");
}
public void CallGenericList()
{
GenericList <int> intlist = new GenericList <int>();
intlist.Add(1);
GenericList <string> stringlist = new GenericList <string>();
stringlist.Add("string");
GenericList <ExampleClass> exampleClass = new GenericList <ExampleClass>();
exampleClass.Add(new ExampleClass());
}
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
var booklist = new BookList();
booklist.Add(new Book());
var numList = new GenericList <int>();
numList.Add(1);
var genBook = new GenericList <Book>();
genBook.Add(new Book());
}
static void Main(string[] args)
{
NormalObj normalObj = new NormalObj {
Id = 1, Description = "A"
};
//Need 2 seperate lists
var numbers = new List <int>();
numbers.Add(10);
var normalList = new NormalList();
normalList.Add(normalObj);
//Can use one generic list
//Reusable, No performance penality
var genericListInt = new GenericList <int>();
genericListInt.Add(10);
var genericListNormalObj = new GenericList <NormalObj>();
genericListNormalObj.Add(normalObj);
//.NET already has generic collections so there's no need to create our own
//see System.Collections.Generic
ICollection <int> A = new List <int>();
IEnumerable <int> B = new List <int>();
IList <int> C = new List <int>();
//etc
//Can also make generic objects
//Also called generic dictionnaries
GenericObj <int, int, string> intInt = new GenericObj <int, int, string> {
Id = 1, Description = 1
};
GenericObj <int, string, string> intString = new GenericObj <int, string, string> {
Id = 1, Description = "Description"
};
//Value type example
var valueType = new ValueTypeConstraint <int>(1);
var valueTypeNull = new ValueTypeConstraint <int>();
Console.WriteLine(valueType.GetValueOrDefault().ToString());
Console.WriteLine(valueTypeNull.GetValueOrDefault().ToString());
}
static void Main(string[] args)
{
var numbers = new GenericList <int>();
numbers.Add(10);
var book = new BookList();
var books = new GenericList <BookList>();
books.Add(book);
var dictionary = new GenericDictionary <string, Book>();
dictionary.Add("1234", new Book());
}
//types of contraints
//where T : IComparable
//where T : Product
//where T : struct
//where T : class
//where T : new()
static void Main(string[] args)
{
var book = new Book {
ISBN = "1111", Title = "C# Advanced"
};
var books = new GenericList <Book>();
books.Add(book);
Console.WriteLine(books.GetSize());
Console.WriteLine(books[0].Title);
books[0] = new Book()
{
ISBN = "22", Title = "New Book"
};
var newBook = books.Get(0);
Console.WriteLine(newBook.Title + " " + newBook.ISBN);
//multiple generic parameters
var dictionary = new GenericDictionary <string, Book>();
dictionary.Add("ISBN", new Book());
//using egeneric method
Console.WriteLine(Utilities.Max <int>(5, 10));
//contraint to paticular class
var calculator = new DicountCalculator <Product>();
var product = new Product()
{
Price = 12.99, Name = "TV"
};
var discount = calculator.CalculateDiscount(product);
Console.WriteLine("Discount: $" + discount);
//using Nullable class
var number = new Nullable <int>(5);
Console.WriteLine("Has Value? " + number.HasValue);
Console.WriteLine("Value: " + number.GetNullOrDefault());
Console.ReadKey();
}
static void Main(string[] args)
{
var book = new Books()
{
Isbn = "1111", Title = "The Call of the Wild", Price = 67
};
var numbers = new GenericList <int>();
numbers.Add(5);
var dict = new GenericDictionary <string, Books>();
dict.Add("3323", new Books());
var num = new Nullable <int>(5);
Console.WriteLine(" has a value? " + num.HasValue);
Console.WriteLine(" value itself: " + num.GetValueOrDefault());
}
static void Main()
{
// Declare a list of type int.
GenericList <int> list1 = new GenericList <int>();
list1.Add(1);
// Declare a list of type string.
GenericList <string> list2 = new GenericList <string>();
list2.Add("");
// Declare a list of type ExampleClass.
GenericList <ExampleClass> list3 = new GenericList <ExampleClass>();
list3.Add(new ExampleClass());
}
static void Main(string[] args)
{
var numbers = new GenericList <int>();
numbers.Add(1);
var books = new GenericList <Book>();
books.Add(new Book());
var dictionary = new GenericDictionary <string, Book>();
dictionary.Add("123asd", new Book());
var number1 = new Nullable <int>();
Console.WriteLine($"Has value: {number1.HasValue} - Value : {number1.GetValueorDefault()}");
}
static void Main(string[] args)
{
//Declare a list of type int.
GenericList <int> intList = new GenericList <int>();
intList.Add(1);
//Declare list of type string
GenericList <string> stringList = new GenericList <string>();
stringList.Add("item1");
//Declare list of type MyClass1
GenericList <MyClass1> myClassList = new GenericList <MyClass1>();
myClassList.Add(new MyClass1());
Console.ReadKey();
}
static void Main(string[] args)
{
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("1234", new Book());
var number = new Nullable <int>(5);
Console.WriteLine("has value ?" + number.HasValue);
Console.WriteLine("value: " + number.GetValueOrDefault());
}
static void Main(string[] args)
{
var numbers = new GenericList <int>();
numbers.Add(10);
//int a = numbers[0];
var dictionary = new GenericDictionary <string, int>();
var num = new Nullable <int>(5);
Console.WriteLine("has Value ? " + num.HasValue);
Console.WriteLine("Value: " + num.GetValueOrDefault());
var num1 = new System.Nullable <int>(5);
Console.WriteLine("has Value ? " + num1.HasValue);
Console.WriteLine("Value: " + num1.GetValueOrDefault());
}
static void Main(string[] args)
{
// Checking the 1st Impleentation of Generic Class
var numbers = new GenericList <int>();
numbers.Add(10);
//Checking Nullable using Generics
var valued = new Nullable <int>(10);
var notValued = new Nullable <double>();
Console.WriteLine("Valued Has Value: " + valued.HasValue);
Console.WriteLine("Valued Value: " + valued.GetValueOrDefault());
Console.WriteLine("notValued Has Value: " + notValued.HasValue);
Console.WriteLine("notValued Value: " + notValued.GetValueOrDefault());
bool?res = null;
Console.WriteLine("Boolean Value is : {0}", res.GetValueOrDefault());
Console.ReadLine();
}
static void Main(string[] args)
{
var book = new Book {
Isbn = "1234", Title = "C# Book"
};
// System.Collections.Generic.
var books = new GenericList <Book>();
books.Add(book);
var dictionary = new GenericDictionary <string, Book>();
dictionary.Add("1", new Book());
var number = new Nullable <int>(5);
Console.WriteLine("Has value ? " + number.HasValue + " " + number.GetValueOrDefault());
}
static void Main(string[] args)
{
var book = new Book {
Isbn = "53434", Title = "C#"
};
Console.WriteLine(book.Isbn);
Console.WriteLine(book.Title);
//The problem here is we have two different types of Lists
//var number = new List();
//number.Add(19);
//var books= new Book();
//books.Add(book);
var numbers = new GenericList <int>();
numbers.Add(100);
var books = new GenericList <Book>();
books.Add(book);
//Use of Dictionary
//As you see we pass anything we want as parameters types
//So if we want to use it again we can change just the parameter types
var dictionary = new GenericDictionary <string, int>();
dictionary.Add("Ben Hur", 42);
//If we have a value in our parameter we will get it else we get 0
//Try to leave empty the parameter
var number = new Nullable <int>(5);
Console.WriteLine("Has value? " + number.HasValue);
Console.WriteLine("Value:" + number.GetValueorDefault());
}
static void Main(string[] args)
{
// For Not Generics examples: we need to instance each list
Book book = new Book {
Isbn = "1234567", Title = "C# Advanced"
}; // instance of the Book object
Del
List numbers = new List(); // instance of List
numbers.Add(10);
//// For Generics examples: we do not need to instance each list
var intNum = new GenericList <int>(); // in here, specify the type, and it did not have to specify the type earlier
intNum.Add(20);
var books0 = new GenericList <Book>();// object Genericlist is list of books, it is not a list of objects
books0.Add(new Book());
//// Generic DiscountCalculator
var discountCalculator = new DiscountCalculator <Product>();
// Generic Nullable
var number = new Nullable <int>(100);
Console.WriteLine(number);
Console.WriteLine(number.HasValue);
Console.WriteLine(number.GetValueOrDefault());
}
static void Main(string[] args)
{
GenericList <int> list = new GenericList <int>();
Point p1 = new Point();
Point p2 = new Point();
GenericList <Point> pList = new GenericList <Point>();
pList.Add(p1);
pList.Add(p2);
Console.WriteLine(pList[1]);
Console.WriteLine(list.Count);
Console.WriteLine(list.Capacity);
list.Add(1);
list.Add(2);
list.Add(3);
list.Add(4);
list.Add(5);
Console.WriteLine(list.Count);
Console.WriteLine(list.Capacity);
list.Add(1);
list.InsertAt(1, -50);
list.RemoveAt(list.Count - 1);
Console.WriteLine(list.ToString());
Console.WriteLine(list.IndexOf(5));
Console.WriteLine(pList.ToString());
Console.WriteLine(list.Max());
Console.WriteLine(list.Min());
//Console.WriteLine(pList.Max());
Console.WriteLine(list.Count);
Console.WriteLine(list.Capacity);
}
static void Main(string[] args)
{
var book = new Book {
Isbn = "1111", Title = "C# Advanced"
};
//Trocamos esses dois por uma lista de Genericos
//var numbers = new List();
//numbers.Add(10);
//var books = new Booklist();
//books.Add(book);
var numbers = new GenericList <int>();
numbers.Add(10);
var books = new GenericList <Book>();
books.Add(new Book());
//Genericos em .NET são encontrados nas classes da 'System.Collections.Generic'.
//Agora os dictionary.
var dictionary = new GenericDictionary <string, Book>();
dictionary.Add("1234", new Book());
var number = new Nullable <int>(5);
Console.WriteLine("Has value ? " + number.HasValue);
Console.WriteLine("Value: " + number.GetValueOrDefault());
Console.WriteLine("Press a key to close...");
Console.ReadKey();
}
static void Main(string[] args)
{
var book = new Book {
Isbn = "1111", Title = "C# Advanced"
};
//var numbers = new List();
//numbers.Add(10);
//var books = new BookList();
//books.Add(book);
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("1234", new Book());
}
//Generic lists are very rarely used in applications. Probably won't need to create your own, but instead
//just use ones that exist.
static void Main(string[] args)
{
var book = new Book {
Isbn = "1111", Title = "C# advanced"
};
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("1234", new Book());
var number = new Nullable <int>();
Console.WriteLine("Has Value ?" + number.HasValue);
Console.WriteLine("Value: " + number.GetValueOrDefault());
}
static void Main(string[] args)
{
#if badcode
var numbers = new[] { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
//Length
Console.WriteLine("Length of Array is: " + numbers.Length);
//IndexOf
var index = Array.IndexOf(numbers, 9);
Console.WriteLine("Index of 9 is: " + index);
//Clear
var book = new Book {
Isbn = "1111", Title = "C# Basic"
};
var book1 = new Book {
Isbn = "2222", Title = "C# Intermediate"
};
var book2 = new Book {
Isbn = "3333", Title = "C# Advanced"
};
var number = new Custom_List();
number.Add(10);
foreach (var item in numbers)
{
number.Add(item);
}
foreach (var item in number)
{
Console.WriteLine(item);
}
var books = new BookList();
books.Add(book);
books.Add(book1);
books.Add(book2);
for (int i = 0; i < 3; i++)
{
Console.WriteLine(books[i].Title);
}
var number1 = new GenericList <int>();
foreach (var item in numbers)
{
number1.Add(item);
}
number1.Add(10);
for (int i = 0; i < 10; i++)
{
Console.WriteLine(number1[i]);
}
var books1 = new GenericList <Book>();
books1.Add(book);
books1.Add(book1);
books1.Add(book2);
for (int i = 0; i < 3; i++)
{
Console.WriteLine(books1[i].Title);
}
#endif
}
