or an empty collection this returns false.</p>
</div><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><h5><span class="tsd-kind-parameter">pred</span>: <span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">(</span><span class="tsd-kind-parameter">a</span><span class="tsd-signature-symbol">: </span><a href="IKeyValuePair.html" class="tsd-signature-type tsd-kind-interface">IKeyValuePair</a><span class="tsd-signature-symbol">