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  1. #include <type_traits>
  2.  
  3. class B     {};
  4. class X : B {};
  5. class Y     {};
  6.  
  7. template <typename T, typename std::enable_if<std::is_base_of<B, T>::value>::type* = nullptr>
  8. class A
  9. {
  10.     A() = default;
  11. };
  12.  
  13.    template class A<X>;
  14. // template class A<Y>; # will not compile
  15.  
  16. int main() {}
Success #stdin #stdout 0s 2892KB
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https://ideone.com/Qz8ydu
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

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