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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. struct A
  5. { 
  6. 	void operator() () { cout << "A()\n"; }
  7. };
  8.  
  9. struct B
  10. {
  11. 	void operator() (int x) { cout << "B(" << x << ")\n"; }
  12. };
  13.  
  14. template<class... Bs>
  15. struct C : Bs...
  16. {
  17. 	using Bs::operator()...;
  18. };
  19.  
  20. int main() 
  21. {
  22. 	C<A, B> c;
  23. 	c();
  24. 	c(42);
  25. }
Success #stdin #stdout 0s 4372KB
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stdin
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Standard input is empty
stdout
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A()
B(42)
https://ideone.com/eRQjFw
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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