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  1. #include <iostream>
  2.  
  3. template<typename T>
  4. struct test_t{
  5.     T value;
  6.  
  7.     test_t(){
  8.         std::cerr << __PRETTY_FUNCTION__ << '\n';
  9.     }
  10.  
  11.     template<typename X>
  12.     test_t(X&& val) : value{std::forward<X>(val)}{
  13.         std::cerr << __PRETTY_FUNCTION__ << '\n';
  14.     }
  15.  
  16.     template<typename X>
  17.     test_t(const test_t<X>& rhs) : value{rhs.value}{
  18.         std::cerr << __PRETTY_FUNCTION__ << '\n';
  19.     }
  20.  
  21.     template<typename X>
  22.     test_t& operator= (const test_t<X>& rhs){
  23.         std::cerr << __PRETTY_FUNCTION__ << '\n';
  24.         value = rhs.value;
  25.         return *this;
  26.     }
  27.  
  28.     template<typename X>
  29.     test_t(test_t<X>&& rhs) : value{std::move(rhs.value)}{
  30.         std::cerr << __PRETTY_FUNCTION__ << '\n';
  31.     }
  32.  
  33.     template<typename X>
  34.     test_t& operator= (test_t<X>&& rhs){
  35.         std::cerr << __PRETTY_FUNCTION__ << '\n';
  36.         value = std::move(rhs.value);
  37.         return *this;
  38.     }
  39.  
  40.     ~test_t(){
  41.         std::cerr << __PRETTY_FUNCTION__ << '\n';
  42.     }
  43. };
  44.  
  45.  
  46. #include <vector>
  47.  
  48. int main(){
  49.     std::vector<test_t<int>> container;
  50.  
  51.     for(int n=0; n!=3; ++n) {
  52.         std::cout << n << '\n';
  53.         container.emplace_back();
  54.     }
  55. }
  56.  
Success #stdin #stdout #stderr 0s 15240KB
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test_t<T>::test_t() [with T = int]
test_t<T>::test_t() [with T = int]
test_t<T>::~test_t() [with T = int]
test_t<T>::test_t() [with T = int]
test_t<T>::~test_t() [with T = int]
test_t<T>::~test_t() [with T = int]
test_t<T>::~test_t() [with T = int]
test_t<T>::~test_t() [with T = int]
test_t<T>::~test_t() [with T = int]
https://ideone.com/0l6uSE
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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