static void Main()
{
Test previous = new Test(6);
List <Test> collection = new List <Test>();
FilterDelegate <Test> filter = Filter;
SelectDelegate <Test> select = Select;
for (int i = 0; i < 10; i++)
{
collection.Add(new Test(i));
}
// use explicit types to be able to use ref in lambda
CombinedDelegate <Test> combined = (IEnumerable <Test> c, ref Test p) => @select(filter(c), ref p);
Test result = combined(collection, ref previous);
//Expected result Test with Number = 7
}
public static void ShowCombinedDelegate()
{
//Создаем несколько экземпляров делегата типа CombinedDelegate
CombinedDelegate countDelegateOne = CountToOne;
CombinedDelegate countDelegateTwo = CountToTwo;
CombinedDelegate countDelegateThree = CountToThree;
//Комбинируем ссылки соданных делегатов на одном скомбинированом делегате
CombinedDelegate combinedDelegate = countDelegateOne + countDelegateTwo + countDelegateThree;
Console.WriteLine("Enter number from 1 to 5:");
string variantToRun = string.Empty;
while (variantToRun != "exit")
{
variantToRun = Console.ReadLine();
switch (variantToRun)
{
case "1":
countDelegateOne();
break;
case "2":
countDelegateTwo();
break;
case "3":
combinedDelegate();
break;
case "4":
//combinedDelegate = combinedDelegate - countDelegateTwo;
combinedDelegate -= countDelegateTwo;
combinedDelegate();
break;
case "5":
CombinedDelegate combinedDelegateTwoThree = combinedDelegate - countDelegateOne;
combinedDelegateTwoThree();
break;
default:
variantToRun = "exit";
break;
}
}
}
