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  1. #include <functional>
  2.  
  3. class Foo
  4. {
  5. public:
  6.     void bar1(int )
  7.     {
  8.         /// No-op.
  9.     }
  10.  
  11.     void bar2(const int &)
  12.     {
  13.         /// No-op.
  14.     }
  15.  
  16.     void foo(int x)
  17.     {
  18.         _wrapper_bar1(x);           /// No problems to deduce type
  19.         _wrapper_bar2(x);           /// No problems to deduce type
  20.  
  21.         _wrapper(&Foo::bar1, x);    
  22.         _wrapper(&Foo::bar2, x);    
  23.     }
  24.  
  25. private:
  26.     template <typename ...Args, typename ...Arg2s>
  27.     void _wrapper(void (Foo::*method) (Args ...), Arg2s&& ...args)
  28.     {
  29.         /// Do some common stuff here...
  30.  
  31.         (this->*method)(std::forward<Arg2s>(args)...);
  32.     }
  33.  
  34.     template <typename ...Args>
  35.     void _wrapper_bar1(Args && ...args)
  36.     {
  37.         bar1(std::forward<Args>(args)...);
  38.     }
  39.  
  40.     template <typename ...Args>
  41.     void _wrapper_bar2(Args && ...args)
  42.     {
  43.         bar2(std::forward<Args>(args)...);
  44.     }
  45. };
  46.  
  47. int main()
  48. {
  49.     Foo().foo(123);
  50. }
  51.  
Success #stdin #stdout 0s 3136KB
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https://ideone.com/Sid9nN
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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