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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. #include <type_traits>
  5.  
  6. template <typename T>
  7. struct foo
  8.  {
  9.    template <typename U = T>
  10.    typename std::enable_if<false == std::is_same<U, long>::value>::type
  11.       bar1 (int)
  12.        {cout<<"bar1\n"; }
  13.  
  14.    template <typename U = T>
  15.    typename std::enable_if<false == std::is_same<U, long>::value, int>::type
  16.       bar2 ()
  17.        { cout<<"bar2\n"; return 0; }
  18.  };
  19.  
  20. int main()
  21.  {
  22.    foo<int>  fi;
  23.    foo<long> fl;
  24.  
  25.    fi.bar1(0); // compile
  26.    fi.bar2();  // compile
  27.  
  28.     fl.bar1<int>(0); // compilation error
  29.    // fl.bar2();  // compilation error
  30.  }
  31.  
Success #stdin #stdout 0s 4436KB
comments (?)
stdin 
Standard input is empty
stdout 
bar1
bar2
bar1
https://ideone.com/k9cvnC
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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