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  1. #include<iostream>
  2.  
  3. namespace ns{
  4. 	struct hoge{};
  5. 	template<class T>
  6. 	void f(T&){std::cout<<"ns::f()"<<std::endl;}
  7. }
  8. namespace ns1{
  9. 	template<class T>
  10. 	struct hoge1{};
  11. 	template<class T>
  12. 	void f1(T&){std::cout<<"ns1::f1()"<<std::endl;}
  13. }
  14. namespace ns2{
  15. 	struct hoge2:ns1::hoge1<void(ns::hoge (*)())>{};
  16. 	template<class T>
  17. 	void f2(T&){std::cout<<"ns2::f2()"<<std::endl;}
  18. }
  19. namespace ns3{
  20. 	template<class T>
  21. 	struct hoge3{};
  22. }
  23.  
  24. int main()
  25. {
  26. 	ns3::hoge3<ns2::hoge2> a;
  27.         //f(a); // ns is not associated namespace
  28.         f1(a); // ns1 is associated namespace
  29.         f2(a); // ns2 is associated namespace
  30. }
Success #stdin #stdout 0.01s 2724KB
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stdin
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Standard input is empty
stdout
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ns1::f1()
ns2::f2()
https://ideone.com/vBLjA
language:
C++ (gcc 8.3)
created:
14 years ago
visibility:
public

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