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  1.  
  2. #include <iostream>
  3. #include <algorithm>
  4. #include <list>
  5.  
  6. using namespace std;
  7.  
  8. // Item
  9. class MyA { };
  10. class MyB { };
  11.  
  12. template <class T>
  13. class MyItem
  14. {
  15. public:
  16. 	void Print();
  17. };
  18.  
  19. template <>
  20. void MyItem<MyA>::Print()
  21. {
  22. 	cout << "MyItem - MyA" << endl;
  23. }
  24.  
  25. template <>
  26. void MyItem<MyB>::Print()
  27. {
  28. 	cout << "MyItem - MyB" << endl;
  29. }
  30.  
  31. // ItemList
  32. class MyItemList
  33. {
  34. public:
  35. 	template <typename T>
  36. 	void AddItem(MyItem<T> theItem);
  37.  
  38. 	void PrintItems();
  39.  
  40. private:
  41. 	template <typename T>
  42. 	list<MyItem<T>> & GetTypedList();
  43.  
  44. 	list<MyItem<MyA>> myAList;
  45. 	list<MyItem<MyB>> myBList;
  46. };
  47.  
  48. template <typename T>
  49. void MyItemList::AddItem(MyItem<T> theItem)
  50. {
  51. 	GetTypedList<T>().push_back(theItem);
  52. }
  53.  
  54. template <>
  55. list<MyItem<MyA>> & MyItemList::GetTypedList()
  56. {
  57. 	return myAList;
  58. }
  59.  
  60. template <>
  61. list<MyItem<MyB>> & MyItemList::GetTypedList()
  62. {
  63. 	return myBList;
  64. }
  65.  
  66. void MyItemList::PrintItems()
  67. {
  68. 	// Reihenfolge ist uns mal egal
  69. 	for_each(myAList.cbegin(), myAList.cend(), [](MyItem<MyA> i)
  70. 	{
  71. 		i.Print();
  72. 	});
  73.  
  74. 	for_each(myBList.cbegin(), myBList.cend(), [](MyItem<MyB> i)
  75. 	{
  76. 		i.Print();
  77. 	});
  78. }
  79.  
  80. // main
  81. int main(int argc, char * argv[])
  82. {
  83. 	MyItemList itemList;
  84.  
  85. 	// itemList soll die Elemente tatsächlich besitzen
  86. 	{
  87. 		itemList.AddItem(MyItem<MyA>());
  88. 		itemList.AddItem(MyItem<MyB>());
  89. 	}
  90.  
  91. 	itemList.PrintItems();
  92.  
  93. 	return 0;
  94. }
  95.  
Success #stdin #stdout 0s 3060KB
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Standard input is empty
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MyItem - MyA
MyItem - MyB
https://ideone.com/gcGWd
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
secret

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