// SharedBuffer.cpp

#include <vector>
#include <iostream>

template <typename T, int i>
class SharedBuffer
{
public:
  T& operator[](int n)
  {
    if(n<0 || shared.size()<=(unsigned)n)
      throw std::range_error("range error in operator[]");
    return shared[n];
  }
  T operator[](int n) const
  {
    if(n<0 || shared.size()<=n)
      throw range_error("range error in operator[]");
    return shared[n];
  }
  SharedBuffer<T,i>& push_back(const T& t)
  {
    shared.push_back(t);
    return *this;
  }
  unsigned int size()
  {
    return shared.size();
  }
private:
  static std::vector<T> shared;
};

template <typename T, int i>
std::vector<T> SharedBuffer<T,i>::shared;

void makeBuffers()
{
  SharedBuffer<std::string,1> schools;
  schools.push_back("SU").push_back("LeMoyne").push_back("SUNY-ESF");
  SharedBuffer<std::string,2> ivyLeague;
  ivyLeague.push_back("Harvard").push_back("Yale").push_back("Cornell");
}

void main()
{
  makeBuffers();
  SharedBuffer<std::string,1> colleges;
  for(unsigned int i=0; i<colleges.size(); ++i)
    std::cout << "\n  " << colleges[i].c_str();
  std::cout << "\n\n";

  SharedBuffer<std::string,2> moreSchools;
  for(unsigned int i=0; i<moreSchools.size(); ++i)
    std::cout << "\n  " << moreSchools[i].c_str();
  std::cout << "\n\n";
}