Simple way to add elements from one list to another list

Question

What is the "correct" way to add all elements from one std::list to another one?

void
Node::addChilds(const NodeList *list)
{
    for(NodeList::const_iterator i = list->begin();
        i != list->end();
        ++i)
        {
            this->m_childs.push_back(*i);
        }
}

I thought about std::copy, but afaik for copy I have to resize the destination list, backup the end iterator (before resize) etc.

I'm searching for a single-line statement.

Answer 1

this->m_childs.insert(this->m_childs.end(), list->begin(), list->end());

Answer 2

Use a back_insert_iterator. If std::list<T> is the type of m_childs,

std::copy(list.begin(), list.end(),
          std::back_insert_iterator<std::list<T> >(m_childs));