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  1. using System;
  2.  
  3. class Program
  4. {
  5. 	private interface ISomeType
  6. 	{
  7. 	}
  8.  
  9. 	private class SomeType : ISomeType
  10. 	{
  11. 	}
  12.  
  13.  
  14. 	private static void DoWorkingSwap<TItem>(TItem[] array)
  15. 	{
  16. 		var temp = array[0];
  17. 		array[0] = array[1];
  18. 		array[1] = temp;
  19. 	}
  20.  
  21.  
  22. 	private static void Swap<TItem>(ref TItem firstItem, ref TItem secondItem)
  23. 	{
  24. 		var temp = firstItem;
  25. 		firstItem = secondItem;
  26. 		secondItem = temp;
  27. 	}
  28.  
  29. 	private static void DoFaultySwap<TItem>(TItem[] array)
  30. 	{
  31. 		Swap(ref array[0], ref array[1]);
  32. 	}
  33.  
  34.  
  35. 	private static void Main(string[] args)
  36. 	{
  37. 		// ВАЖНО: обратите внимание на тип переменной под массив и тип самого массива
  38. 		ISomeType[] array = new SomeType[2] 
  39. 		{
  40. 			new SomeType(),
  41. 			new SomeType()
  42. 		};
  43.  
  44. 		Console.Write("Doing working swap... ");
  45. 		try
  46. 		{
  47. 			DoWorkingSwap(array);
  48. 			Console.WriteLine("succeeded.");
  49. 		}
  50. 		catch (Exception ex)
  51. 		{
  52. 			Console.WriteLine("FAILED: {0}", ex);
  53. 		}
  54.  
  55. 		Console.Write("Doing faulty swap... ");
  56. 		try
  57. 		{
  58. 			DoFaultySwap(array);
  59. 			Console.WriteLine("succeeded.");
  60. 		}
  61. 		catch (Exception ex)
  62. 		{
  63. 			Console.WriteLine("FAILED: {0}", ex);
  64. 		}
  65. 	}
  66. }
Success #stdin #stdout 0.05s 24016KB
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stdin
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Standard input is empty
stdout
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Doing working swap... succeeded.
Doing faulty swap... FAILED: System.ArrayTypeMismatchException: Source array type cannot be assigned to destination array type.
  at Program.DoFaultySwap[ISomeType] (ISomeType[] array) [0x00000] in <filename unknown>:0 
  at Program.Main (System.String[] args) [0x00000] in <filename unknown>:0
https://ideone.com/9cWsEu
language:
C# (gmcs 5.20.1)
created:
8 years ago
visibility:
public

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