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  1. #include <iostream>
  2. #include <string>
  3.  
  4. namespace test {
  5. 	struct myClass {
  6. 		std::string _name;
  7.  
  8. 		explicit myClass(std::string name) : _name{ name } {}
  9. 		void print(std::ostream& os) const { os << _name; }
  10. 	};
  11.  
  12. 	std::ostream& operator<<(std::ostream& os, const myClass& mC) {
  13. 		mC.print(os);	return os;
  14. 	}
  15.  
  16. 	namespace debug {
  17. 		std::ostream& operator<<(std::ostream& os, const myClass& mC) {
  18. 			os << "debug: ";
  19. 			mC.print(os);
  20. 			return os;
  21. 		}
  22. 	}
  23. }
  24.  
  25. test::myClass mc{"Kai"};
  26.  
  27. void run() {
  28. 	using namespace test;
  29. 	std::cout << mc << std::endl;
  30. }
  31.  
  32. void runDebug() {
  33. 	//using test::debug::operator<<;
  34. 	std::cout << mc << std::endl;		// das erzeugt den Fehler
  35. 	// test::debug::operator<<(std::cout, mc) << std::endl;		// so klappt das
  36.  
  37. }
  38.  
  39. int main() {
  40. 	run();
  41. 	runDebug();
  42.  
  43. 	return 0;
  44. }
  45.  
Success #stdin #stdout 0.01s 5376KB
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Kai
Kai
https://ideone.com/ZoBRrR
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
public

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