private static void ClassAndStruct()
{
PointVal a; // PointVal a = new PointVal();
a.X = 5;
a.Y = 9;
PointVal b = a;
b.X = 4;
b.Y = 8;
a.LogValues();
b.LogValues();
PointRef c = new PointRef();
c.X = 5;
c.Y = 9;
PointRef d = c;
d.X = 4;
d.Y = 8;
c.LogValues();
d.LogValues();
Console.WriteLine("----------------");
var es1 = new EvilStruct();
es1.Name = "es1";
es1.X = 1;
es1.Y = 2;
es1.PrRef = new PointRef()
{
X = 11, Y = 22
};
var es2 = es1;
es2.Name = "es2";
es1.LogValues();
es2.LogValues();
Console.WriteLine();
es2.X = 3;
es2.Y = 4;
es2.PrRef.X = 33;
es2.PrRef.Y = 44;
es1.LogValues();
es2.LogValues();
Console.WriteLine();
}
private static void NullableStructures()
{
PointVal pv;
// Console.WriteLine(pv.X); // Not initialized
PointRef pr = null;
// Console.WriteLine(pr.X); // Null Pointer Exception
PointVal?pv2 = null;
if (pv2.HasValue)
{
PointVal pv3 = pv2.Value;
Console.WriteLine(pv2.Value.X);
Console.WriteLine(pv3.X);
}
PointVal pv4 = pv2.GetValueOrDefault();
}