l</code></pre><div class="info ">
The boolean negation.<br>
</div>

<pre><span id="VAL(&amp;&amp;)"><span class="keyword">val</span> (&amp;&amp;)</span> : <code class="type">bool -&gt; bool -&gt; bool</code></pre><div class="info ">
The boolean 'and'. Evaluation is sequential, left-to-right:
   in <code class="code">e1 <span class="keywordsign">&amp;&amp;</span> e2</code>, <code class="code">e1</code> is evaluated first, and if it returns <code class="code"><span class="keyword">false</span></code>,
   <cod