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  1. #include <type_traits>
  2.  
  3. template <typename T>
  4. class VectorBase
  5. {
  6. public:
  7.     VectorBase() = default;
  8.  
  9.     template <typename T2, typename = typename std::enable_if<std::is_same<double, T>::value && std::is_same<float, T2>::value>::type>
  10.     VectorBase(const VectorBase<T2> &) {}
  11. };
  12.  
  13. int main()
  14. {
  15.     VectorBase<float> f;
  16.     VectorBase<double> d(f);
  17. }
  18.  
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https://ideone.com/v8yB0b
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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