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  1. #include <iostream>
  2. #include <functional>
  3. #include <vector>
  4.  
  5. struct Foo
  6. {
  7.     int i;
  8. };
  9.  
  10. std::vector<std::reference_wrapper<const Foo>> foos;
  11.  
  12. void store(const Foo& container)
  13. {
  14.     foos.push_back(std::cref(container));
  15. }
  16.  
  17. int main()
  18. {
  19.  
  20.     Foo f{5};
  21.  
  22.     const Foo f1(f);
  23.  
  24.     store(f);
  25.     store(f);
  26.     store(f);
  27.     store(f1);
  28.  
  29.     for (auto const& f: foos)
  30.     {
  31.         std::cout << f.get().i << "\n";
  32.     }
  33. }
  34.  
Success #stdin #stdout 0s 3028KB
comments (?)
stdin 
Standard input is empty
stdout 
5
5
5
5
https://ideone.com/0vVv8w
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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