Method addBox

Exercises/Modules/Chapter 12/Soln12_07/Truckload.cpp:114–127

}

void Truckload::addBox(SharedBox box)
{
  auto package{ new Package{box} }; // Create a new Package

  if (m_tail)                      // Check list is not empty
  {
    package->m_previous = m_tail;  // The package is added after the old tail
    m_tail->m_next = package;      // Append the new object to the tail
  }
  else                             // List is empty
    m_head = package;              // so new object is the head
  
  m_tail = package;                // Either way: the latest object is the (new) tail
}

bool Truckload::removeBox(SharedBox boxToRemove)
{