Интерфейсов чисел он не реализует. Есть 2 костыля:
1. Вести словарь функций сложения
var typeToFunc = new Dictionary<Type, AddFunc>() {{typeof(int), IntAdd}, {typeof(Vector2), Vector2Add}};
var left = 123;
var right = 14455;
var result = Add(left, right);
Console.WriteLine($"Результат сложения {left} и {right} = {result}");
var leftVector = new Vector2(123, 55);
var rightVector = new Vector2(55, 111);
var resultVector = Add(leftVector, rightVector);
Console.WriteLine($"Результат сложения {leftVector} и {rightVector} = {resultVector}");
T Add<T>(T left, T right)
{
return ( T ) typeToFunc[typeof(T)](left, right);
}
object Vector2Add(object left, object right)
{
return ( Vector2 ) left + ( Vector2 ) right;
}
object IntAdd(object left, object right)
{
return (int) left + (int) right;
}
delegate object AddFunc(object left, object right);
2. Создай монаду с int и Vector2
var number = NumberOrVector2<int>.FromNumber(123);
var newNumber = number.Add(() => 23, () => throw new InvalidOperationException("хранится число"));
if (newNumber.TryGetNumber(out var result))
{
Console.WriteLine($"Получился результат: {result}");
}
else
{
Console.WriteLine($"Ошибка - хранился вектор");
}
public readonly struct NumberOrVector2<TNumber> where TNumber: unmanaged, INumber<TNumber>
{
private readonly TNumber _number;
private readonly Vector2? _vector;
private NumberOrVector2(TNumber number, Vector2? vector)
{
_number = number;
_vector = vector;
}
public bool TryGetNumber(out TNumber number)
{
number = _number;
return !_vector.HasValue;
}
public bool TryGetVector(out Vector2 vector)
{
vector = _vector.GetValueOrDefault();
return _vector.HasValue;
}
public NumberOrVector2<TNumber> Add(Func<TNumber> numberAdd, Func<Vector2> vectorAdd)
{
if (_vector is {} vector)
{
return new NumberOrVector2<TNumber>(_number, vector + vectorAdd());
}
return new NumberOrVector2<TNumber>(_number + numberAdd(), null);
}
public static NumberOrVector2<TNumber> FromNumber(TNumber number)
{
return new NumberOrVector2<TNumber>(number, null);
}
public static NumberOrVector2<TNumber> FromVector(Vector2 vector)
{
return new NumberOrVector2<TNumber>(default, vector);
}
}
