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  1. #include <functional>
  2. #include <iostream>
  3.  
  4. template <class... CALLARGS>
  5. class Closure{
  6. public:
  7.  
  8.     template <class OBJ, typename M, class... CAPARGS>
  9.     Closure(OBJ* obj, M (OBJ::*fct), CAPARGS... capArgs){
  10.         callback =
  11.             [=] (CALLARGS... callArgs) -> void{
  12.                 (obj->*fct)(capArgs..., callArgs...);
  13.             };
  14.     }
  15.  
  16.     template <typename F, class... CAPARGS>
  17.     Closure(F fct, CAPARGS... capArgs){
  18.         callback =
  19.             [=] (CALLARGS... callArgs) -> void{
  20.                 fct(capArgs..., callArgs...);
  21.             };
  22.     }
  23.  
  24.     void operator () (CALLARGS... callArgs){
  25.         callback(callArgs...);
  26.     }
  27.  
  28. private:
  29.     std::function<void(CALLARGS...)> callback;
  30. };
  31.  
  32. class A{
  33. public:
  34.     void fct(int a){ std::cout << "A::fct " << a << std::endl; }
  35. };
  36.  
  37. void plusF(int a){std::cout << "plusF " << a << std::endl;}
  38.  
  39. int main(void) {
  40.     A a;
  41.  
  42.     Closure<int> callF(plusF);
  43.     Closure<int> callA(&a, &A::fct);
  44.  
  45.     callF(1);
  46.     callA(2);
  47.  
  48. }
Success #stdin #stdout 0s 3460KB
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Standard input is empty
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plusF 1
A::fct 2
https://ideone.com/11Twfn
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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