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  1. #include <string>
  2. #include <iostream>
  3. #include <vector>
  4. #include <algorithm>
  5.  
  6. template <typename F, typename... Fs>
  7. auto lambdaList(F f, Fs... fs)
  8. {
  9.     return [=] (auto&... args) { f(args...); lambdaList(fs...)(args...); };
  10. }
  11.  
  12. template <typename F>
  13. auto lambdaList(F f)
  14. {
  15.     return [=] (auto&... args) { f(args...); };
  16. }
  17.  
  18. struct Window
  19. {
  20.     Window (int, int, int, int) {}
  21. };
  22.  
  23. int main()
  24. {
  25.     auto printStarBefore = [] (const std::string& str) {
  26.         std::cout << "* " + str;
  27.     };
  28.     auto printStarAfter = [] (const std::string& str) {
  29.         std::cout << str + " *" << std::endl;
  30.     };
  31.  
  32.     auto colorBG = [] (const Window&) {
  33.         std::cout << "BG set ";
  34.     };
  35.  
  36.     auto colorFG = [] (const Window&) {
  37.         std::cout << "FG set\n";
  38.     };
  39.  
  40.     auto composed = lambdaList(printStarBefore,printStarAfter);
  41.     std::vector<std::string> vec = {"1","2","3","4"};
  42.     std::for_each(std::begin(vec), std::end(vec), composed);
  43.  
  44.     auto composed2 = lambdaList(colorBG, colorFG);
  45.     Window win(2,25,5,0);
  46.     composed2(win);
  47. }
  48.  
Success #stdin #stdout 0s 3416KB
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stdin
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Standard input is empty
stdout
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* 11 *
* 22 *
* 33 *
* 44 *
BG set FG set
https://ideone.com/aO86oA
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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