fork download
copy 
  1. #include <map>
  2. #include <list>
  3. #include <algorithm>
  4. #include <iterator>
  5. #include <vector>
  6.  
  7. int getage(const std::pair<std::string, int>& pair)
  8. { 
  9.     return pair.second; 
  10. }
  11.  
  12. int main()
  13. {
  14.      std::map<std::string, int> agemap;
  15.      agemap["jill"] = 13;
  16.      agemap["jack"] = 31;
  17.  
  18.      std::list<int> agelist(agemap.size());
  19.      std::transform(agemap.begin(), agemap.end(), agelist.begin(), getage);
  20.  
  21.      // or:
  22.      std::vector<int> v;
  23.      std::transform(agemap.begin(), agemap.end(), std::back_inserter(v), getage);
  24.  
  25.      // By popular demand, and just to spell it out:
  26.      int age_array[10];
  27.      std::transform(agemap.begin(), agemap.end(), age_array, getage);
  28.  
  29.      // or even
  30.      int *dyn_array = new int[agemap.size()];
  31.      std::transform(agemap.begin(), agemap.end(), dyn_array, getage);
  32.  
  33.      delete[] dyn_array;
  34.  
  35. }
Success #stdin #stdout 0s 2856KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/Kf2du
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!