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  1. #include <iostream>
  2. #include <map>
  3.  
  4. namespace std
  5. {
  6.     template<typename Iter, typename = typename iterator_traits<Iter>::iterator_category>
  7.     Iter begin(pair<Iter, Iter> const &p)
  8.     {
  9.         return p.first;
  10.     }
  11.     template<typename Iter, typename = typename iterator_traits<Iter>::iterator_category>
  12.     Iter end(pair<Iter, Iter> const &p)
  13.     {
  14.         return p.second;
  15.     }
  16. }
  17.  
  18. int main()
  19. {
  20. 	std::multimap<int, int> mm
  21. 	{
  22. 		{1, 1},
  23. 		{1, 2},
  24. 		{2, 1},
  25. 		{2, 2}
  26. 	};
  27. 	for(auto &v : mm.equal_range(1))
  28. 	{
  29. 		std::cout << v.first << " -> " << v.second << std::endl;
  30. 	}
  31. }
  32.  
Success #stdin #stdout 0s 3428KB
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stdin
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Standard input is empty
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1 -> 1
1 -> 2
https://ideone.com/wHVfkh
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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