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  1. template<int N>
  2. class A
  3. {
  4.     template<int N2> friend class A;
  5. public:
  6.     A() : i(N) {}
  7.  
  8.     template<int K>
  9.     void foo(A<K> other)
  10.     {
  11.         i = other.i; // <-- other.i is private
  12.     }
  13.  
  14. private:
  15.     int i;
  16. };
  17.  
  18. int main()
  19. {
  20.     A<1> a1;
  21.     A<2> a2;
  22.     a1.foo(a2);
  23.  
  24.     return 0;
  25. }
Success #stdin #stdout 0.01s 2720KB
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https://ideone.com/rOJ3hB
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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