onst</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  <a class="link" href="smart_library.html" title="Class smart_library">smart_library</a> <span class="special">&amp;</span> <a class="link" href="smart_library.html#idp28691424-bb"><span class="identifier">assign</span></a><sp