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  1. #include <iostream>
  2. #include <type_traits>
  3. #include <list>
  4. #include <vector>
  5. #include <memory>
  6.  
  7. struct Base
  8. {
  9.     virtual void doSomething(int) = 0;
  10. };
  11.  
  12. struct DerivedOne: public Base
  13. {
  14.     void doSomething(int)
  15.     {
  16.         std::cout << __PRETTY_FUNCTION__ << '\n';
  17.     }
  18. };
  19.  
  20. struct DerivedTwo: public Base
  21. {
  22.     void doSomething(int)
  23.     {
  24.         std::cout << __PRETTY_FUNCTION__ << '\n';
  25.     }
  26. };
  27.  
  28. template<template<class, class...> class C, class... Args>
  29. void myFunc(C<std::shared_ptr<Base>, Args...>& objs, int y)
  30. {
  31.     for(auto it = std::begin(objs); it != std::end(objs); ++it)
  32.         (*it)->doSomething(y);
  33. }
  34.  
  35. int main()
  36. {
  37.     // list of shared pointers to Base
  38.     std::list<std::shared_ptr<Base>> objs;
  39.  
  40.     objs.push_back(std::make_shared<DerivedOne>());
  41.     objs.push_back(std::make_shared<DerivedTwo>());
  42.     myFunc(objs, 42);
  43.  
  44.     // vector of shared pointers to base
  45.     std::vector<std::shared_ptr<Base>> vec(objs.rbegin(), objs.rend());;
  46.     myFunc(vec,42);
  47. }
  48.  
Success #stdin #stdout 0s 3232KB
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Standard input is empty
stdout
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virtual void DerivedOne::doSomething(int)
virtual void DerivedTwo::doSomething(int)
virtual void DerivedTwo::doSomething(int)
virtual void DerivedOne::doSomething(int)
https://ideone.com/wma2BR
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
secret

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