#ifndef MAP_FILT_H
#define MAP_FILT_H

#include <vector>
#include <map>

template<typename T, typename T2, class Func>
class map_filter_view
{
  private:
  std::map<T, T2>& myMap;
  Func func;
  public:
  map_filter_view(std::map<T, T2>& myMap)
  {
    this->myMap = myMap;
  }

  int count (T key) const
  {
    int sum = 0;
    for (std::pair<T, T2>& item : myMap)
    {
      if (!func(item) && item.first == key)
      {
        ++sum;
      }
    }
    return sum;
  }

  int size () const
  {
    int sum = 0;
    for (std::pair<T, T2>& item : myMap)
    {
      if (!func(item))
      {
        ++sum;
      }
    }
    return sum;
  }
};
#endif