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  1. // Example program
  2. #include <iostream>
  3. #include <string>
  4. #include <functional>
  5.  
  6.  
  7. int functor1()
  8. {
  9.    return -1;
  10. }
  11.  
  12. int functor2(int a)
  13. {
  14.     return a;
  15. }
  16.  
  17. int functor3(int a, int b)
  18. {
  19.     return a + b;
  20. }
  21.  
  22. void doSomethingWithThisFunctor(const std::function<void()>& functor)
  23. {
  24. 	functor();
  25. }
  26.  
  27. int main()
  28. {
  29.     doSomethingWithThisFunctor(std::bind(functor1));
  30.     doSomethingWithThisFunctor(std::bind(functor2, 5));
  31.  
  32.     auto lambda = [](int a, int b, int c) -> void {std::cout << "lambda expr = " << a + b << std::endl; };
  33.  
  34.  
  35.     std::function<void()> myFunctor = std::bind(lambda, 1, 1, 2);
  36.  
  37.     myFunctor();
  38.  
  39.     //doSomethingWithThisFunctor(std::bind(lambda, 5, 5));
  40. }
  41.  
Success #stdin #stdout 0s 15232KB
comments (?)
stdin
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Standard input is empty
stdout
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lambda expr = 2
https://ideone.com/Kc3vpF
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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