ent, like you would do in C.</li>
<li>the <code>orelse</code> keyword.</li>
<li>unwrap the optional value with the <code>?</code> method.</li>
</ul>
<p>When you use an if statement, you use a pair of pipes to unwrap the optional value, and use this “unwrapped object” inside the if block. Using the example below as a reference, if the object <code>num</code> is null, then, the code inside the if statement is not executed. Otherwise, the if statement will unwrap the object <code>num</code> into the <code>