Method getFirstBox

Examples/Modules/Chapter 12/Ex12_17/Truckload.cpp:49–54

SharedBox Truckload::getFirstBox()
{
  // Return m_head's box (or nullptr if the list is empty)
  m_current = m_head;
  return m_current? m_current->getBox() : nullptr;
}

SharedBox Truckload::getNextBox()
{