.NET中ref和out参数之间的区别

public static void Swap(ref int a, ref int b)
{
    int temp = a;
    a = b;
    b = temp;
}

int x = 1;
int y = 2;
Swap(ref x, ref y);
Console.WriteLine($"x={x}, y={y}"); // 输出 x=2, y=1

public static void GetValues(out int a, out int b)
{
    a = 1;
    b = 2;
}

int x, y;
GetValues(out x, out y);
Console.WriteLine($"x={x}, y={y}"); // 输出 x=1, y=2