mcs/tests/gtest-133.cs

   1 // Not used -- ex-nullable-struct
   2
   3 // Converting a struct from S to S? creates a copy of the struct.
   4 // Getting the struct out of the non-null value creates another copy.
   5
   6 using System;
   7
   8 struct S {
   9   private int x;
  10   public int X {
  11     get { return x; }
  12     set { this.x = value; }     // Cannot be used on non-variable ns.Value
  13   }
  14   public void Set(int x) {
  15     this.x = x;
  16   }
  17 }
  18
  19 class MyTest {
  20   public static void Main(String[] args) {
  21     S s = new S();
  22     s.Set(11);
  23     Console.WriteLine("s.X = {0}", s.X);
  24     S? ns = s;
  25     Console.WriteLine("s.X = {0} ns.Value.X = {1}", s.X, ns.Value.X);
  26     ns.Value.Set(22);
  27     Console.WriteLine("s.X = {0} ns.Value.X = {1}", s.X, ns.Value.X);
  28     s.Set(33);
  29     Console.WriteLine("s.X = {0} ns.Value.X = {1}", s.X, ns.Value.X);
  30   }
  31 }