public static void Run()
{
//Point a = new Point();
PointVal a;
a.X = 3;
a.Y = 5;
PointVal b = a;
b.X = 7;
b.Y = 10;
a.LogValues();
b.LogValues();
//
PointRef c = new PointRef()
{
X = 3, Y = 5
};
//c.X = 3;
//c.Y = 5;
PointRef d = c;
d.X = 7;
d.Y = 10;
c.LogValues();
d.LogValues();
}
private static void NullRefExceptionNullable()
{
//tell about nulls
PointRef c = null;
Console.WriteLine(c.X); //exception
PointVal?nulllableVal = null; //useful when we fetch data from a databse and the field is null in db
if (nulllableVal.HasValue)
{
}
//or
PointVal defaultVal = nulllableVal.GetValueOrDefault();
}