<span class="keyword">bool</span> <span class="identifier">is_cached</span><span class="special">(</span><span class="identifier">noddy_NoddyObject</span><span class="special">*</span> <span class="identifier">x</span><span class="special">)</span>
<span class="special">{</span>
   <span class="keyword">return</span> <span class="identifier">x</span> <span class="special">==</span> <span class="identifier">cache</span><span class="special">.</span><span class="identifier">get</span><span class="special">();