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  1. #include <iostream>
  2. #include <functional>
  3. #include <vector>
  4.  
  5. void someFunction () {
  6. 	std::cout << "someFunction\n";
  7. }
  8.  
  9. class FunctionalClass {
  10. 	public:
  11. 		FunctionalClass (int x) : m_x (x) {}
  12. 		void operator () () {
  13. 			std::cout << "FunctionalClass {" << m_x << "}.operator ()\n";
  14. 		}
  15. 	private:
  16. 		int m_x;
  17. };
  18.  
  19. class SomeClass {
  20. 	public:
  21. 		SomeClass (int x) : m_x (x) {}
  22. 		void someMemberFunction () {
  23. 			std::cout << "SomeClass {" << m_x << "}.someMemberFunction\n";
  24. 		}
  25. 	private:
  26. 		int m_x;
  27. };
  28.  
  29. int main() {
  30. 	FunctionalClass f (42);
  31. 	SomeClass c (123);
  32. 	int closured = 456;
  33.  
  34. 	std::vector<std::function<void()>> funArray {	// Array mit std::function
  35.  
  36. 		&someFunction,		// Funktionspointer reinpacken
  37.  
  38. 		f,					// Funktional (Klasse mit operator ()) reinpacken (kopieren!)
  39.  
  40. 		std::bind(&SomeClass::someMemberFunction, c), // Member-Funktion mit zugehöriger Instanz reinpacken
  41.  
  42. 		[&]() {				// Lambda reinpacken
  43. 			std::cout << "lambda closured=" << closured << '\n';
  44. 		}
  45. 	};
  46.  
  47. 	for (auto& f : funArray) {				// Alle reingepackten Funktionen aufrufen
  48. 		f ();
  49. 	}
  50.  
  51. 	return 0;
  52. }
Success #stdin #stdout 0s 3432KB
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stdin
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Standard input is empty
stdout
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someFunction
FunctionalClass {42}.operator ()
SomeClass {123}.someMemberFunction
lambda closured=456
https://ideone.com/2QAxPf
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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