hlight"><pre><span></span><span class="mi">1234</span> <span class="ow">in</span> <span class="n">index</span> <span class="c1"># =&gt; returns True or False</span>
</pre></div>
</div>
</dd></dl>

<dl class="py method">
<dt class="sig sig-object py" id="voyager.Index.__len__">
<span class="sig-name descname"><span class="pre">__len__</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">&#x2192;</span> <span class="sig-return-typ