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  1. #include <functional>
  2. #include <iostream>
  3. #include <map>
  4. using namespace std;
  5.  
  6. struct MyClass{
  7. 	void a(void*){ cout << "a\n"; }
  8. 	void b(void*){ cout << "b\n"; }
  9. 	void c(void*){ cout << "c\n"; }
  10. };
  11.  
  12. int main() {
  13. 	map<int, function<void(void*)>> foo;
  14. 	map<int, function<void(MyClass&, void*)>> bar;
  15. 	MyClass mc;
  16.  
  17. 	foo[1] = bind(&MyClass::a, mc, placeholders::_1);
  18. 	foo[2] = bind(&MyClass::b, mc, placeholders::_1);
  19. 	foo[3] = bind(&MyClass::c, mc, placeholders::_1);
  20.  
  21. 	bar[1] = mem_fn(&MyClass::a);
  22. 	bar[2] = mem_fn(&MyClass::b);
  23. 	bar[3] = mem_fn(&MyClass::c);
  24.  
  25. 	for(auto i = 1; i <= 3; ++i) {
  26. 		cout << "Foo: ";
  27. 		foo[i](nullptr);
  28. 		cout << "Bar: ";
  29. 		bar[i](mc, nullptr);
  30. 	}
  31. }
Success #stdin #stdout 0s 3420KB
comments (?)
stdin 
Standard input is empty
stdout 
Foo: a
Bar: a
Foo: b
Bar: b
Foo: c
Bar: c
https://ideone.com/vECrxn
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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