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  1. #include <iostream>
  2. #include <algorithm>
  3. #include <deque>
  4. #include <stdarg.h>
  5. template<typename T> class UFlag {
  6.  
  7. public:
  8. 	UFlag(){}
  9. 	UFlag(int n, ...){
  10. 		va_list args;
  11. 		va_start(args, n);
  12. 		for(int i = 0; i < n; ++i){
  13. 			T t = va_arg(args, T);
  14. 			list.push_back(t);
  15. 		}
  16. 		va_end(args);
  17. 	}
  18.  
  19.     explicit operator bool() const {
  20.         return list.size();
  21.     }
  22.  
  23. 	inline UFlag<T>& operator |(T b){
  24. 	    list.push_back(b);
  25. 		return *this;
  26. 	}
  27.  
  28. 	inline UFlag<T>& operator |(UFlag<T> b){
  29. 	    for(const T& t : b.list)
  30. 	        list.push_back(t);
  31. 		return *this;
  32. 	}
  33.  
  34. 	inline UFlag<T>& operator &(T n){
  35. 	    UFlag<T> uf; uf | n;
  36. 	    return *this & uf;
  37. 	}
  38.  
  39. 	inline UFlag<T>& operator &(UFlag<T> b){
  40. 		//if(list.size() == 0) return *(&b);
  41. 		if(b.list.size() == 0) return *this;
  42. 	    UFlag<T> *uf = new UFlag<T>();
  43. 	    for(T& t : b.list){
  44. 	        if(std::find(list.begin(), list.end(), t) != list.end()) uf->list.push_back(t);
  45. 	    }
  46. 	    return *uf;
  47. 	}
  48.  
  49. 	void cout(){
  50. 	    std::cout << "cout: ";
  51. 	    for(const auto& i : list)
  52. 	        std::cout << i << ", ";
  53. 	    std::cout << std::endl;
  54. 	}
  55.  
  56. private:
  57. 	std::deque<T> list;
  58. };
  59.  
  60.  
  61. using namespace std;
  62.  
  63. int main()
  64. {
  65.     cout << "Starting" << endl;
  66.    UFlag<int> uf;
  67.    (uf | 10) | 5;
  68.    uf.cout();
  69.  
  70.    UFlag<int> uf2;
  71.    uf2 | 55 | 66;
  72.    uf2.cout();
  73.  
  74.  
  75.    uf | uf2;
  76.    uf.cout();
  77.  
  78.    UFlag<int> uf3;
  79.    uf3 | 0 | 7 | -5;
  80.    uf3.cout();
  81.  
  82.    UFlag<int> uf4 = uf & uf3;
  83.    uf4.cout();
  84.  
  85.    if(uf & uf3) std::cout << "Contains" << std::endl;
  86.    uf3 | 66 | 10;
  87.    if(uf & uf3) std::cout << "2: Contains" << std::endl;
  88.  
  89.    UFlag<int> uf5(3, 5, 6, 90);
  90.    uf5.cout();
  91.  
  92.    UFlag<int> uf6;
  93.    UFlag<int> uf7(3, 4, 5, 6);
  94.    (uf6 & uf7).cout();
  95.    (uf7 & uf6).cout();
  96.    return 0;
  97. }
  98.  
  99.  
Success #stdin #stdout 0s 3468KB
comments (?)
stdin
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Standard input is empty
stdout
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Starting
cout: 10, 5, 
cout: 55, 66, 
cout: 10, 5, 55, 66, 
cout: 0, 7, -5, 
cout: 
2: Contains
cout: 5, 6, 90, 
cout: 
cout: 4, 5, 6,
https://ideone.com/7jtnep
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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