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  1. #include <vector>
  2. #include <iostream>
  3.  
  4. template <typename T>
  5. void foo(T begin, T end)
  6. {
  7.   for (; begin != end; ++begin)
  8.   {
  9.     std::cout << " " << *begin;
  10.   }
  11. }
  12.  
  13. template <typename T>
  14. void foo(T begin, std::reverse_iterator<T> end)
  15. {
  16.   foo(begin, end.base());
  17. }
  18.  
  19. template <typename T>
  20. void foo(std::reverse_iterator<T> begin, T end)
  21. {
  22.   foo(end, begin.base());
  23. }
  24.  
  25. template <typename T>
  26. void foo(std::reverse_iterator<T> begin, std::reverse_iterator<T> end)
  27. {
  28.   foo(end.base(), begin.base());
  29. }
  30.  
  31. int main()
  32. {
  33.   std::vector<int> v { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
  34.   foo(v.begin(), v.end()); std::cout << std::endl;
  35.   foo(v.begin(), v.rbegin()); std::cout << std::endl;
  36.   foo(v.rbegin(), v.begin()); std::cout << std::endl;
  37.   foo(v.rbegin(), v.rend()); std::cout << std::endl;
  38. }
  39.  
Success #stdin #stdout 0s 3412KB
comments ()
stdin
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Standard input is empty
stdout
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 1 2 3 4 5 6 7 8 9
 1 2 3 4 5 6 7 8 9
 1 2 3 4 5 6 7 8 9
 1 2 3 4 5 6 7 8 9
https://ideone.com/8t3Dns
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
secret

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