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  1. #include <memory>
  2. #include <type_traits>
  3.  
  4.  
  5. template<typename T>
  6. class Container  {
  7. 	T t;
  8. public:
  9.     Container() = default;
  10.  
  11.     Container(const Container& other) = default;
  12.  
  13.     Container(Container&& other) : t(std::move(other.t)) {}
  14. };
  15.  
  16. static_assert(std::is_copy_constructible<Container<int>>::value, "Non-Copyable");
  17. static_assert(!std::is_copy_constructible<Container<std::unique_ptr<int>>>::value, "Copyable");
  18.  
  19. Container<std::unique_ptr<int>> makeNonCopyableContainer() {
  20.     return Container<std::unique_ptr<int>>();
  21. }
  22.  
  23. int main () { 
  24.     Container<int> c1;
  25.     Container<int> c2(c1);
  26.     Container<std::unique_ptr<int>> c3;
  27.     // This would generate compile error:
  28.     // Container<std::unique_ptr<int>> c4(c3);
  29.     Container<std::unique_ptr<int>> c5(makeNonCopyableContainer());
  30.     return 0;
  31. }
Success #stdin #stdout 0s 3336KB
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https://ideone.com/9h6dFx
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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