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  1. #include <map>
  2. #include <iostream>
  3.  
  4. template<typename MapT>
  5. void join_inplace(MapT& m1, MapT const& m2)
  6. {
  7.     for (auto p : m2)
  8.         m1[p.first] = p.second;
  9. }
  10.  
  11. int main()
  12. {
  13.     std::map<int, int> m1{ {3, 4}, {6, 7} };
  14.     std::map<int, int> const m2{ {11, 5}, {6, 0} };
  15.  
  16.     join_inplace(m1, m2);
  17.  
  18.     for (auto p : m1)
  19.         std::cout << "{" << p.first << ": " << p.second << "}, ";
  20.     std::cout << "\n";
  21. }
Success #stdin #stdout 0s 15240KB
comments (?)
stdin 
Standard input is empty
stdout 
{3: 4}, {6: 0}, {11: 5},
https://ideone.com/8vQDoG
language:
C++14 (clang 8.0)
created:
8 years ago
visibility:
public

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