switch新的用法

 

 

 

 

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List<Object> list = new List<object>();             list.Add(0);             list.Add(new List<int>()             {                 2, 4, 6             });             list.Add(null);List<Object> list = new List<object>();             list.Add(0);             list.Add(new List<int>()             {                 2, 4, 6             });             list.Add(null);             list.Add(11);             foreach (var item in list)             {                 switch (item)                 {                     case 0:                                                 break;                       case IEnumerable<int> test:                           break;                       case int n when n > 2:                           break;                     case null:                           break;                     default:                         break;                 }               }             list.Add(11);             foreach (var item in list)             {                 switch (item)                 {                     case 0:                                                 break;                       case IEnumerable<int> test:                           break;                       case int n when n > 2:                           break;                     case null:                           break;                     default:                         break;                 }               }