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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. namespace problem {
  5. class storage {
  6.     struct data_base {};
  7.  
  8.     template <class K> 
  9.     struct data: data_base {
  10.         data(const K& v): value_(v) {}
  11.         K value_;
  12.     };
  13.  
  14.     typedef std::vector<data_base*> container_type;
  15.  
  16. public:
  17.     ~storage() {
  18.         while(!this->VData.empty()) {
  19.             delete this->VData.back();
  20.             this->VData.pop_back();
  21.         }
  22.     }
  23.     template <class P>
  24.     inline void push(P v) {
  25.         this->VData.push_back(new data<P>(v));
  26.     }
  27.     template <class P>
  28.     P &get(int i) { 
  29.         return static_cast<data<P>*>(this->VData[i])->value_; 
  30.     }
  31. private:
  32.     container_type VData;
  33. };
  34. }
  35.  
  36. int main() {
  37.     problem::storage testStorage;
  38.     testStorage.push(256);
  39.     testStorage.push(3.4);
  40.  
  41.     std::cout << testStorage.get<int>(0) << std::endl;
  42.     std::cout << testStorage.get<double>(1) << std::endl;
  43. }
Success #stdin #stdout 0.02s 2856KB
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256
3.4
https://ideone.com/jjuVq
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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