bool</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-add_dict_read_const_key"><a href="#val-add_dict_read_const_key" class="anchor"></a><code><span><span class="keyword">val</span> add_dict_read_const_key : 
  <span><a href="../PulseTimestamp/index.html#type-t">Pulselib.PulseBasicInterface.Timestamp.t</a> <span class="arrow">&#45;&gt;</span></span>
  <span><a href="../PulseTrace/index.html#type-t">Pulselib.PulseBasicInterface.Trace.t</a> <span class="arrow">&#45;&gt;