&nbsp;<span class="keywordsign">&amp;&amp;</span>&nbsp;(p&nbsp;a2)&nbsp;<span class="keywordsign">&amp;&amp;</span>&nbsp;...&nbsp;<span class="keywordsign">&amp;&amp;</span>&nbsp;(p&nbsp;an)</code>.</p>
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<pre><span id="VALexists"><span class="keyword">val</span> exists</span> : <code class="type">f:('a -&gt; bool) -&gt; 'a list -&gt; bool</code></pre><div class="info ">
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<p><code class="code">exists&nbsp;p&nbsp;[a1;&nbsp;...;&nbsp;an]</code> checks if at least one elemen