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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. namespace ns {
  6. class A
  7. {
  8. public:
  9.     void print(){ std::cout << "A" << std::endl; };
  10. };   
  11. }
  12.  
  13. #define PRINT_NS(E) ([](){ ::ns::E e; e.print(); }())
  14.  
  15. int main() {
  16.     PRINT_NS(A);
  17. 	return 0;
  18. }
Success #stdin #stdout 0s 16064KB
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A
https://ideone.com/GRsB0c
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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