/////////////////////////////////////////////////
// MT1Q1_2Q5.cpp - Sharer with Categories      //
//                                             //
// Jim Fawcett, CSE687 - Midterm, Spring 2010  //
/////////////////////////////////////////////////

#include <iostream>
#include <string>
#include <vector>

typedef std::vector<std::string> vecStr;

template <typename T, int i=1>
class shared
{
public:
  static T& value() { return shared_t; }
private:
  static T shared_t;
};

template <typename T, int i>
T shared<T,i>::shared_t;

void fun1()
{
  std::cout << "\n  in fun1(), setting shared to 3";
  shared<int>::value() = 3;
}

void fun2()
{
  std::cout << "\n  in fun2(), value of shared is: " << shared<int>::value();
  std::cout << "\n  in fun2(), setting value of shared to -2";
  shared<int>::value() = -2;
}

void fun3()
{
  // copy temporary std::vector<std::string> into shared
  vecStr* pVecStr = new vecStr();
  shared<vecStr>::value() = *pVecStr;
  delete pVecStr;
  // and use the shared vector
  shared<vecStr>::value().push_back("aardvark");
  shared<vecStr>::value().push_back("platypus");
}
 
void main()
{
  std::cout << "\n  MT1Q1_2Q5 - Sharer with Categories";
  std::cout << "\n ====================================";
  fun1();
  fun2();
  std::cout << "\n  value of shared in main is: " << shared<int>::value();
  std::cout << "\n";
  fun3();
  std::cout << "\n  values from shared vector:";
  for(size_t i=0; i<shared<vecStr>::value().size(); ++i)
    std::cout << "\n    " << shared<vecStr>::value()[i];
  std::cout << "\n\n";
}