Null-Coalescing Short Circuit

using System;

class MainClass {

static void Main() {

A a = new A();

a.Value = new A();

Console.WriteLine("{0}", a?.DoIt()?.DoIt()?.DoIt());

Console.WriteLine("Hello World!");

}

}

public class A

{

public A Value {get;set;}

}

public static class AExtensions

{

public static A DoIt(this A a)

{

Console.WriteLine("IN IT, {0}, returning {1}", a == null ? "NULL A" : "NOT-NULL A", a.Value == null ? "NULL A" : "NOT-NULL A");

return a.Value;

}

}