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  1. #include <iostream>
  2. #include <type_traits>
  3.  
  4.  
  5. template <int SZ>
  6. class Internal 
  7. {
  8.     char arr[SZ];
  9. };
  10.  
  11. template < int SZ>
  12.  struct  helper 
  13.  {
  14.  typedef typename std::enable_if<(SZ > 1000 && SZ <9999) ,Internal<SZ>>::type type;
  15.  };
  16.  
  17.  template < int SZ>
  18.  struct A : public  helper<SZ>::type
  19.  {};
  20.  
  21. int main() {
  22.   A<1024> x;
  23.  
  24.   //NG
  25.   //A<-34> y;
  26.   return 0;
  27. }
Success #stdin #stdout 0s 3292KB
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https://ideone.com/PtdIcd
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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