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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.     namespace release {
  13. 	    std::ostream& operator<<(std::ostream& os, const myClass& mC) {
  14. 		    mC.print(os);
  15. 		    return os;
  16. 	    }
  17. 	}
  18.  
  19. 	namespace debug {
  20. 		std::ostream& operator<<(std::ostream& os, const myClass& mC) {
  21. 			os << "debug: ";
  22. 			mC.print(os);
  23. 			return os;
  24. 		}
  25. 	}
  26. }
  27.  
  28. test::myClass mc{"Kai"};
  29.  
  30. void run() {
  31. 	using namespace test::release;
  32. 	std::cout << mc << std::endl;
  33. }
  34.  
  35. void runDebug() {
  36. 	using namespace test::debug;
  37. 	std::cout << mc << std::endl;		// das erzeugt nun keinen Fehler mehr
  38. 	//test::debug::operator<<(std::cout, mc) << std::endl;		// so klappt das
  39.  
  40. }
  41.  
  42. int main() {
  43. 	run();
  44. 	runDebug();
  45.  
  46. 	return 0;
  47. }
  48.  
Success #stdin #stdout 0s 5524KB
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stdin
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Standard input is empty
stdout
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Kai
debug: Kai
https://ideone.com/Kgftrw
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
public

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