init_list.cpp

LinkedList(std::initializer_list<Data> listOfItems) noexcept
{
    if (listOfItems.size() != 0)
    {
        auto it = listOfItems.begin();      // will use the iterator for the list to get the first element
        head = std::make_unique<Node>(*it); // The head is our first element
        size++;                             // added first item
        Node *current = head.get();
        ++it;
        for (; it != listOfItems.end(); ++it) // we traverse the list using the defined iterator
        {
            current->next = std::make_unique<Node>(*it);
            current = current->next.get();
            size++;
        }
    }
};