mcs/tests/test-null-operator-16.cs

   1 using System;
   2
   3 class X
   4 {
   5         Action<string> a;
   6
   7         public static void Main ()
   8         {
   9                 string x = null;
  10                 string y = null;
  11                 string[] z = null;
  12
  13                 x?.Contains (y?.ToLowerInvariant ());
  14                 x?.Contains (y?.Length.ToString ());
  15
  16                 var res = x?[y?.Length ?? 0];
  17
  18                 var res2 = z?[x?.Length ?? 0];
  19
  20                 x?.Foo (y?.ToLowerInvariant ());
  21
  22                 X xx = null;
  23                 xx?.a (y?.ToLowerInvariant ());
  24         }
  25 }
  26
  27 static class E
  28 {
  29         public static string Foo (this string arg, string value)
  30         {
  31                 return "";
  32         }
  33 }