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  1. #include <iostream>
  2. #include <functional>
  3.  
  4. template <class F>
  5. struct pipeable {
  6. private:
  7.     F f;
  8. public:
  9.     pipeable(F&& f) : f(std::forward<F>(f)) {}
  10.     template<class... Xs>
  11.     auto operator()(Xs&&... xs) ->
  12.         decltype(std::bind(f, std::placeholders::_1, std::forward<Xs>(xs)...))
  13.     {
  14.         return std::bind(f, std::placeholders::_1, std::forward<Xs>(xs)...);
  15.     }
  16. };
  17.  
  18. template <class F>
  19. pipeable<F> piped(F&& f) {
  20.     return pipeable<F>{std::forward<F>(f)};
  21. }
  22.  
  23. template<class T, class F>
  24. auto operator>>(T&& x, const F& f) -> decltype(f(std::forward<T>(x))) {
  25.     return f(std::forward<T>(x));
  26. }
  27.  
  28. int main() {
  29.     auto add = piped([](int x, int y){ return x + y; });
  30.     int a = 10 >> add(20) ;
  31.     std::cout << a << std::endl;
  32.     return 0;
  33. }
Success #stdin #stdout 0s 3468KB
comments (?)
stdin 
Standard input is empty
stdout 
30
https://ideone.com/4qq1Je
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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