esc">
<p>A list destructor that will be applied to each element of the list. Set this to <code>NULL</code> if not needed.</p>
</td></tr>
<tr><td class="val" id="memory">memory</td><td class="desc">
<p>The current memory object that handles deallocation.</p>
</td></tr>
<tr><td class="val" id="user">user</td><td class="desc">
<p>A user-supplied field that is passed as the last argument to the destructor.</p>
</td></tr>
</table>

<h4>note</h4>

<p>This function expects that all nodes added by <code><a href="ft