[C#] Delegate 제네릭

public partial class Program
{
    static void Main(string[] args)
    {
        // 하나의 제네릭 매개 변수 사용
        GenericDelegateInvoke();

        // 여러 개의 제네릭 매개 변수를 사용
        VoidDelegateInvoke();

        // 반환값을 갖는 다중 템플릿 대리자
        ReturnValueDelegateInvoke();
    }
}

public partial class Program
{
    private delegate T FormulaDelegate<T>(T a, T b);

    private static int AddInt(int x, int y)
    {
        return x + y;
    }
    private static double AddDouble(double x, double y)
    {
        return x + y;
    }

    private static void GenericDelegateInvoke()
    {
        FormulaDelegate<int> intAddition = AddInt;
        FormulaDelegate<double> DoubleAddition = AddDouble;
        Console.WriteLine("Invoking intAddition(2, 3)");
        Console.WriteLine("Result = {0}", intAddition(2, 3));
        Console.WriteLine("Invoking doubleAddition(2.2 , 3.5)");
        Console.WriteLine("Result = {0}", DoubleAddition(2.2, 3.5));
    }

}
public partial class Program
{
    private delegate void AdditionDelegate<T1, T2>(T1 value1, T2 value2);
    private static void AddIntDouble(int x, double y)
    {
        Console.WriteLine($"int {x} + double {y} = {x + y}");
    }

    private static void AddFloatDouble(float x, double y)
    {
        Console.WriteLine($"float {x} + double {y} = {x + y}");
    }

    private  static void VoidDelegateInvoke()
    {
        AdditionDelegate<int, double> intDoubleAdd = AddIntDouble;
        AdditionDelegate<float, double> floatDoubleAdd = AddFloatDouble;
        intDoubleAdd(1, 6.5);
        floatDoubleAdd((float)5.5, 4.3);
    }
}

public partial class Program
{
    private delegate TResult AddAndConvert<T1, T2, TResult>(T1 digit1, T2 digit2);
    private static float AddIntDoubleConvert(int x, double y)
    {
        float result = (float)(x + y);
        Console.WriteLine($"(int) {x} + (double) {y} = (float) {result}");
        return result;
    }
    private static int AddFloatDoubleConvert(float x, double y)
    {
        int result = (int)(x + y);
        Console.WriteLine($"(float) {x} + (double) {y} = (int) {result}");
        return result;
    }
    private static void ReturnValueDelegateInvoke()
    {
        AddAndConvert<int, double, float> intDoubleAddConvertToFloat = AddIntDoubleConvert;
        AddAndConvert<float, double, int> floatDoubleAddConvertToInt = AddFloatDoubleConvert;
        float f = intDoubleAddConvertToFloat(5, 3.8);
        int i = floatDoubleAddConvertToInt((float)6.4, 9.8);
    }
}