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  1. template <typename A, typename B>
  2. class foo { };
  3.  
  4. template <typename T>
  5. struct feature_type {};
  6.  
  7. template <typename A, typename B>
  8. struct feature_type<foo<A,B>> {
  9.   typedef A type1;
  10.   typedef A type2;
  11. };
  12.  
  13. int main(int argc, const char* argv[])
  14. {
  15.   typename feature_type<foo<int,char>>::type1 x;
  16.   typename feature_type<foo<int,char>>::type2 y;
  17.   return 0;
  18. }
Success #stdin #stdout 0s 2892KB
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stdout 
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https://ideone.com/hRV1cw
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

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