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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. template<class iterator>
  5. void test(iterator, iterator)
  6. {
  7.    std::cout << "test iterator\n";
  8. }
  9.  
  10. template<class iterator, class predicate>
  11. void test(iterator, iterator, predicate)
  12. {
  13.    std::cout << "test iterator, predicate\n";
  14. }
  15.  
  16. template<class container, class predicate>
  17. void test(const container& cont, predicate compare)
  18. {
  19.    std::cout << "test container, predicate\n";
  20.  
  21.    test(cont.begin(), cont.end(), compare);
  22. }
  23.  
  24. template<class container>
  25. class adapter
  26. {
  27. public:
  28.    typedef typename container::iterator   iterator;
  29.  
  30.    adapter(container* cont) : cont(cont)
  31.    { }
  32.  
  33.    iterator begin() const
  34.    { return cont->begin(); }
  35.  
  36.    iterator end() const
  37.    { return cont->end(); }
  38.  
  39.    bool operator()(const iterator& one, const iterator& two)
  40.    { return *one < *two; }
  41.  
  42. private:
  43.    container* cont;
  44. };
  45.  
  46. int main()
  47. {
  48.    std::vector<int>   v;
  49.  
  50.    adapter<std::vector<int>>   a(&v);
  51.  
  52.    test(a, a);
  53.  
  54. }
  55.  
Success #stdin #stdout 0s 2884KB
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test iterator
https://ideone.com/wps2tZ
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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