 mutable_borrow_method_call</a></li><li class="chapter-item expanded "><a href="immutable_variable.html"><strong aria-hidden="true">16.</strong> immutable_variable</a></li><li class="chapter-item expanded "><a href="mutable_variables.html"><strong aria-hidden="true">17.</strong> mutable_variables</a></li><li class="chapter-item expanded "><a href="copy.html"><strong aria-hidden="true">18.</strong> copy</a></li><li class="chapter-item expanded "><a href="function.html"><strong aria-hidden="true">19.</strong>