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  1. #include <iostream>
  2. #include <functional>
  3.  
  4. template <typename Arg1, typename Arg2, typename Cap1, typename Cap2>
  5. struct my_lambda : std::binary_function<Arg1, Arg2, void>
  6. {
  7.     my_lambda(const Cap1& c1, const Cap2& c2) : cap1(c1), cap2(c2) {}
  8.  
  9.     void operator()(const Arg1& arg1, const Arg2& arg2) const
  10.     {
  11.         // lambda body
  12.         std::cout << (cap1 + cap2 + arg1 + arg2) << std::endl;
  13.     }
  14.  
  15.     mutable Cap1 cap1;
  16.     mutable Cap2 cap2;
  17. };
  18.  
  19. template <typename Arg1, typename Arg2, typename Cap1, typename Cap2>
  20. my_lambda<Arg1, Arg2, Cap1, Cap2> lambda(const Cap1& c1, const Cap2& c2)
  21. {
  22.     return my_lambda<Arg1, Arg2, Cap1, Cap2>(c1, c2);
  23. }
  24.  
  25. int main()
  26. {
  27.     int i = 1, j = 2;
  28.     lambda<int, int>(i, j)(3, 4);
  29. }
  30.  
Success #stdin #stdout 0s 3340KB
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https://ideone.com/x8wrb2
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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