Null Coalescing Operator : Nullable « Data Type « C# / CSharp Tutorial






  1. C# / CSharp Tutorial
  2. Data Type
  3. Nullable
using System;

class MainClass
{
   static void Main()
   {
      int? nullableInteger = null;
      Console.WriteLine("nullableInteger: {0}", nullableInteger ?? -1);

      nullableInteger = 10;
      Console.WriteLine("nullableInteger: {0}", nullableInteger ?? -1);
   }
}

nullableInteger: -1
nullableInteger: 10




2.54.Nullable
2.54.1.null unification
2.54.2.Nullable long
2.54.3.Nullable Struct
2.54.4.Nullable Types Access: Explicitly use properties
2.54.5.Nullable Types Access: shortcut syntax
2.54.6.Nullable Types Assignment
2.54.7.Null Coalescing Operator
2.54.8.A nullable type
2.54.9.Use nullable objects in expressions: result contains null, because one operand is null
2.54.10.Assign value to nullable int
2.54.11.Using ??