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  1. #include <vector>
  2. #include <string>
  3. #include <iostream>
  4. #include <iomanip>
  5. #include <set>
  6. #include <type_traits>
  7.  
  8. using namespace std;
  9.  
  10. template <typename Container,
  11.           typename = enable_if_t<!is_same<Container,string>::value>>
  12. ostream& operator<<(ostream& out, const Container& container)
  13. {
  14.     bool isnt_first = false;
  15.     for (const auto& element : container)
  16.     {
  17.         if (isnt_first) {
  18.             out << ", "s << element;
  19.         }
  20.         else {
  21.             out << element;
  22.             isnt_first = true;
  23.         }
  24.     }
  25.     return out;
  26. }
  27.  
  28. int main() {
  29.  
  30.     //setlocale(LC_ALL, "ru");
  31.  
  32.     const set<string> cats = { "Мурка"s, "Белка"s, "Георгий"s, "Рюрик"s };
  33.     cout << cats << endl;
  34.     return 0;
  35. }
  36.  
  37.  
Success #stdin #stdout 0.01s 5460KB
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Белка, Георгий, Мурка, Рюрик
https://ideone.com/rVOs7J
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
secret

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