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  1. // based on https://h...content-available-to-author-only...r.ru/post/209914/
  2. // for http://ru.stackoverflow.com/a/589005/178988
  3.  
  4. using System;
  5.  
  6. public class Container
  7. {
  8. 	public Enumerator GetEnumerator()
  9. 	{
  10. 		return new Enumerator();
  11. 	}
  12. }
  13.  
  14. public struct Enumerator : IDisposable
  15. {
  16. 	public int Id;
  17.  
  18. 	public bool MoveNext()
  19. 	{
  20. 		Console.WriteLine("MoveNext: {0}", this.Id);
  21. 		return false;
  22. 	}
  23.  
  24. 	public object Current
  25. 	{
  26. 		get { return null; }
  27. 	}
  28.  
  29. 	public void Dispose()
  30. 	{
  31. 		Console.WriteLine("Dispose: {0}", this.Id);
  32. 	}
  33. }
  34.  
  35. public class Test
  36. {
  37.     public static void Main()
  38.     {
  39.         var items = new Container();
  40.  
  41.         var enumerator = items.GetEnumerator();
  42.  
  43.         using (enumerator as IDisposable)
  44.         {
  45.         	enumerator.Id = 7;
  46.  
  47.             var exists = enumerator.MoveNext();
  48.  
  49.             if (exists)
  50.             {
  51.                 do
  52.                 {
  53.                     var item = enumerator.Current;
  54.                     exists = enumerator.MoveNext();
  55.  
  56.                     Console.WriteLine(exists ? "{0}" : "{0} is the last one", item);
  57.                 } while (exists);
  58.             }
  59.         }
  60.  
  61.         Console.WriteLine("Done");
  62.     }
  63. }
Success #stdin #stdout 0.01s 29664KB
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stdin
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Standard input is empty
stdout
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MoveNext: 7
Dispose: 0
Done
https://ideone.com/IaIkrC
language:
C# (gmcs 5.20.1)
created:
8 years ago
visibility:
public

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