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  1.     #include <iostream>
  2.     #include <vector>
  3.  
  4.     template <class Container, class Function>
  5.     struct Invoker {
  6.  
  7.         const Container& invoke(const Container &container, Function function)
  8.         {
  9.             for (auto &value : container) function(value);
  10.         }
  11.  
  12.         Container& invoke(Container &container, Function function)
  13.         {
  14.             for (auto &value : container) function(value);
  15.         }
  16.  
  17.     };
  18.  
  19.     int main() {
  20.  
  21.         std::vector<int> container {1, 2, 3};
  22.         auto fn = [](int val) {
  23.             std::cout << val << std::endl;
  24.         };
  25.  
  26.         Invoker<decltype(container), decltype(fn)>().invoke(container, fn);
  27.  
  28.         return 0;
  29.     }
  30.  
Success #stdin #stdout 0s 3428KB
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https://ideone.com/KnyGdT
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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