static void ValRefTypesDemo()
{
EvilStruct es1 = new EvilStruct();
es1.PointRef = new PointRef()
{
X = 1, Y = 2
};
//es1.PointRef.X = 1;
//es1.PointRef.Y = 2;
EvilStruct es2 = es1;
Console.WriteLine($"es1.PointRef.X={es1.PointRef.X}" +
$", es1.PointRef.Y= {es1.PointRef.Y}");
Console.WriteLine($"es2.PointRef.X={es2.PointRef.X}" +
$", es2.PointRef.Y={es2.PointRef.Y}");
es2.PointRef.X = 42;
es2.PointRef.Y = 45;
Console.WriteLine($"es1.PointRef.X={es1.PointRef.X}" +
$", es1.PointRef.Y= {es1.PointRef.Y}");
Console.WriteLine($"es2.PointRef.X={es2.PointRef.X}" +
$", es2.PointRef.Y={es2.PointRef.Y}");
Console.ReadLine();
PointVal a;//Тоже что и Pointval a = new Pointval();
a.X = 3;
a.Y = 5;
PointVal b = a;
b.X = 7;
b.Y = 10;
a.LogValues();
b.LogValues();
Console.WriteLine("After structs");
PointRef c = new PointRef();
c.X = 3;
c.Y = 5;
PointRef d = c;
d.X = 7;
d.Y = 10;
c.LogValues();
d.LogValues();
}
static void NRE_NullableValTypesDemo()
{
PointVal?pv = null;
if (pv.HasValue)
{
PointVal pv2 = pv.Value;
Console.WriteLine(pv.Value.X);
Console.WriteLine(pv2.X);
}
else
{
//
}
PointVal pv3 = pv.GetValueOrDefault();
PointRef c = null;
// Console.WriteLine(c.X);
}