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  1. #include <iostream>
  2. #include <memory>
  3.  
  4. class Test {
  5. public:
  6.     Test(){}
  7.     Test(int n) : num(n) {}
  8.     int num;
  9. };
  10.  
  11. template<typename T>
  12. class Object {
  13. public:
  14.     Object(const T& v) : value(v) {}
  15.     Object(std::unique_ptr<T>&& v) : value(*v) {}
  16.  
  17.     T* operator->() { return &value; }
  18. private:
  19.     T value;
  20. };
  21.  
  22. int main(int argc, char *argv[]) {
  23.  
  24.     Object<Test> object1 = Test(1);
  25.     std::cout << object1->num << std::endl;
  26.  
  27.     Object<Test> object2 = Test();
  28.     object2->num = 2;
  29.     std::cout << object2->num << std::endl;
  30.  
  31.     Object<Test> object3 = std::make_unique<Test>(3);
  32.     std::cout << object3->num << std::endl;
  33.  
  34.     Object<Test> object4 = std::make_unique<Test>();
  35.     object4->num = 4;
  36.     std::cout << object4->num << std::endl;
  37. }
Success #stdin #stdout 0s 4276KB
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https://ideone.com/rDjB0K
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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