decimal startAngle = Convert.ToDecimal(159.9);
decimal stopAngle = Convert.ToDecimal(355.87);

//swap each:
//startAngle becomes: 355.87
//stopAngle becomes: 159.9

startAngle = startAngle+stopAngle;
stopAngle = startAngle-stopAngle;
startAngle = startAngle-stopAngle;

decimal startAngle = Convert.ToDecimal(159.9);
decimal stopAngle = Convert.ToDecimal(355.87);

decimal tempDecimal = startAngle;
startAngle = stopAngle;
stopAngle = tempDecimal;

stopAngle = Convert.ToDecimal(159.9);
    startAngle = Convert.ToDecimal(355.87);

int x = 42;
int y = 51236;
x ^= y;
y ^= x;
x ^= y;

int a = 4, b = 6;

a^= b^= a^= b;

float startAngle = 159.9F;
float stopAngle = 355.87F;

startAngle = startAngle * stopAngle;
stopAngle = startAngle / stopAngle;
startAngle = startAngle / stopAngle;

static bool Swap<T>(ref T x, ref T y)
{
    try
    {
        T t = y;
        y = x;
        x = t;
        return true;
    }
    catch
    {
        return false;
    }
}

float startAngle = 159.9F
float stopAngle = 355.87F
Swap<float>(ref startAngle, ref stopAngle);

MyObject obj1 = new MyObject("object1");
MyObject obj2 = new MyObject("object2");
Swap<MyObject>(ref obj1, ref obj2);

a %= b %= a %= b;

y^=x^=y^=x;

x^=y^=x;y^=x;