private static void Main(string[] args)
{
// canonical
var rec = new Receiver();
var command = new ConcreteCommand(rec);
var invoker = new Invoker();
invoker.SetCommand(command);
invoker.ExecuteCommand();
Console.WriteLine();
// live
var user = new User();
user.Compute('+', 100);
user.Compute('-', 30);
user.Compute('*', -1);
user.Undo(3);
user.Undo(3);
user.Redo(2);
user.Redo(2);
user.Redo(2);
}
static void Main(string[] args)
{
/////////
//Receiver receiver = new Receiver();
//ConcreteCommand command = new ConcreteCommand(receiver);
//Invoker invoker = new Invoker();
//invoker.SetCommand(command);
//invoker.ExecuteCommand();
//Console.ReadKey();
////////
/// // Create user and let her compute
User user = new User();
// User presses calculator buttons
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
// Undo 4 commands
user.Undo(4);
// Redo 3 commands
user.Redo(3);
// Wait for user
Console.ReadKey();
}
public static void Run()
{
Console.WriteLine("This real-world code demonstrates the Command pattern used in a simple calculator with unlimited number of undo's and redo's. Note that in C# the word 'operator' is a keyword. Prefixing it with '@' allows using it as an identifier.");
User user = new User();
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
user.Undo(4);
user.Redo(3);
/*
* Current value = 100 (following + 100)
* Current value = 50 (following - 50)
* Current value = 500 (following * 10)
* Current value = 250 (following / 2)
*
* ---- Undo 4 levels
* Current value = 500 (following * 2)
* Current value = 50 (following / 10)
* Current value = 100 (following + 50)
* Current value = 0 (following - 100)
*
* ---- Redo 3 levels
* Current value = 100 (following + 100)
* Current value = 50 (following - 50)
* Current value = 500 (following * 10)
*/
}
static void Main(string[] args)
{
// Crea un usuario y deja que compute
User user = new User();
// El usuario presiona botones de calculadora
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
// Deshace 4 comandos
user.Undo(4);
// Vuelve a hacer 3 comandos
user.Redo(3);
// Espera al usuarioo
Console.ReadKey();
}
static void Main(string[] args)
{
// Create user and let her compute
User user = new User();
// User presses calculator buttons
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
// Undo 4 commands
user.Undo(4);
// Redo 3 commands
user.Redo(3);
// Wait for user
Console.ReadKey();
}
private static void CalculatorExample()
{
var user = new User();
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
user.Undo(4);
user.Redo(3);
}
internal static void Main()
{
var user = new User();
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
user.Undo(4);
user.Redo(3);
}
public static void Run()
{
Console.WriteLine("\nCommand Real World Practice");
User user = new User();
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
user.Undo(4);
user.Redo(3);
}
static void Main(string[] args)
{
User user = new User();
user.Compute(100, '+');
user.Compute(50, '-');
user.Compute(10, '*');
user.Compute(2, '/');
user.Undo(4);
user.Redo(3);
Console.Read();
}
static void Main(string[] args)
{
User user = new User();
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
user.Undo(4);
user.Redo(3);
Console.ReadKey();
}
internal static void Main()
{
var user = new User();
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
user.Undo(4);
user.Redo(3);
// Wait for user
Console.ReadKey();
}
public static void Main()
{
// Create user and let her compute
User user = new User();
// User presses calculator buttons
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
// Undo 4 commands
user.Undo(4);
// Redo 3 commands
user.Redo(3);
}
static void Main(string[] args)
{
User user = new User();
// Use press calculator buttons
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
// Undo 4 commands
user.Undo(4);
// Redo 3 commands
user.Redo(3);
Console.ReadKey();
}
private static void Main()
{
// Creating the user
var user = new User();
// Let the user do something
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
// Undo 4 last commands
user.Undo(4);
// Redo 3 cancelled commands
user.Redo(3);
Console.ReadKey();
}
static void Main(string[] args)
{
Console.WriteLine("Calculator undo/redo operations.");
// Create user to compute
User user = new User();
// User presses calculator buttons
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
user.Undo(4);
user.Redo(3);
Console.ReadKey();
}
static void Main(string[] args)
{
// Create user and let them compute
User user = new User();
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
// Undo 4 commands
user.Undo(4);
// Redo 3 commands
user.Redo(3);
Console.ReadLine();
}
static void Main()
{
// Создаем пользователя.
User user = new User();
// Пусть он что-нибудь сделает.
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
// Отменяем 4 команды
user.Undo(4);
// Вернём 3 отменённые команды.
user.Redo(3);
// Ждем ввода пользователя и завершаемся.
Console.Read();
}
static void Main()
{
// Create user & let them compute
User user = new User();
// Use press calculator buttons
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
// Undo 4 commands
user.Undo(4);
// Redo 3 commands
user.Redo(3);
// Wait for user
Console.ReadKey();
}
/// <summary>
/// Entry point into console application.
/// </summary>
static void Main()
{
// Create user and let her compute
User user = new User();
// User presses calculator buttons
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
// Undo 4 commands
user.Undo(4);
// Redo 3 commands
user.Redo(3);
// Wait for user
Console.ReadKey();
}
static void Main()
{
// Создаем пользователя.
User user = new User();
// Пусть он что-нибудь сделает.
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
// Отменяем 4 команды
user.Undo(4);
// Вернём 3 отменённые команды.
user.Redo(3);
// Ждем ввода пользователя и завершаемся.
Console.Read();
}
public static void Main()
{
// create a new object for calculations
var user = new User();
// executing several calculation actions
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
// cancel 4 last commands
WriteLine("Undo 4 commands");
user.Undo(4);
// repeat 3 of them again
WriteLine("Redo 3 commands");
user.Redo(3);
ReadLine();
}
public void ApplyCommandPlu100Minus50MutiplyBy10DividedBy2_Equal250()
{
User user = new User();
// User presses calculator buttons
user.Compute('+', 100);
user.Compute('-', 50);
user.Compute('*', 10);
user.Compute('/', 2);
Assert.Equal(250, user.GetResult());
// Undo 4 commands
user.Undo(4);
Assert.Equal(0, user.GetResult());
// Redo 3 commands
user.Redo(3);
Assert.Equal(500, user.GetResult());
}
