text: #include "stdafx.h"
  #include "IndexManager.h"
  
  IndexManager* IndexManager::instance = nullptr;
  
  IndexManager::IndexManager()
  {
  }
  
  IndexManager::~IndexManager()
  {
  	delete instance;
  }
  
  IndexManager * IndexManager::getInstance()
  {
  	if (instance == nullptr)
  		instance = new IndexManager();
  
  	return instance;
  }
  