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  1. #include <iostream>
  2. #include <memory>
  3. #include <functional>
  4.  
  5. using namespace std;
  6.  
  7. struct Trace
  8. {
  9. 	Trace() 						: src("()")		{ cout << "X()\n"; }
  10. 	Trace(Trace const &)			: src("(&)")	{ cout << "X(X&)\n"; }
  11. 	Trace(Trace&&)					: src("(&&)")	{ cout << "X(X&&)\n"; }
  12. 	~Trace() 						{ cout << "~X" << src << "\n"; }
  13. 	void operator=(Trace const &) 	{ cout << "X::op=(X&)\n"; }
  14. 	void operator=(Trace &&) 		{ cout << "X::op=(X&&)\n"; }
  15.  
  16. 	std::string src;
  17. };
  18.  
  19. struct Game 
  20. { 
  21. 	static std::function<void()> later;
  22.  
  23.     static void idle( std::function<void()> func, int x )
  24.         { std::cout << "x = " << x << "\n"; later = func; }
  25.  
  26. 	static void cleanup() { if ( later ) later(); }
  27. };
  28.  
  29. struct Player: Trace, std::enable_shared_from_this<Player>
  30. {
  31.      void death() { std::cout << "player.death\n"; }
  32.      void kill() { Game::idle( std::bind(&Player::death, shared_from_this()), 48 ); }
  33. 	 Player() {}
  34. };
  35.  
  36. int main()
  37. {
  38. 	{
  39. 		auto p = std::make_shared<Player>();
  40.     	p->kill();
  41. 	}
  42. 	std::cout << "beginning cleanup\n";
  43. 	Game::cleanup();
  44. }
  45.  
  46. std::function<void()> Game::later;
  47.  
Success #stdin #stdout 0s 3232KB
comments (?)
stdin
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Standard input is empty
stdout
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X()
x = 48
beginning cleanup
player.death
~X()
https://ideone.com/ba9Y7Y
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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