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  1.     #include <vector>
  2.     #include <unordered_map>
  3.     #include <string>
  4.     #include <iostream>
  5.  
  6.     using namespace std;
  7.     int main()
  8.     {
  9.         typedef unordered_map<string, vector<int>> CMap;
  10.         CMap category_map;
  11.         category_map.insert(make_pair("hello", std::vector<int>(1, 5)));
  12.         auto pr = category_map.insert(make_pair("hello", std::vector<int>(1, 5)));
  13.         if (!pr.second)
  14.             pr.first->second.push_back(10);
  15.         cout << pr.first->second.size();
  16.     }
  17.  
  18.  
Success #stdin #stdout 0s 3232KB
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https://ideone.com/svEqcD
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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