opLast(10))
// Prints &quot;[]&quot;</code></pre>

<p><strong><code>n</code>:</strong>  The number of elements to drop off the end of the
  sequence. <code>n</code> must be greater than or equal to zero.
<strong>Returns:</strong> A subsequence leaving off the specified number of elements.</p>

<p><strong>Complexity:</strong> O(<em>n</em>), where <em>n</em> is the length of the sequence.</p>

    <h4>Declaration</h4>    
    <code class="language-swift">func dropLast(_ n: Int) -&gt; AnySequence&lt;LazyDropWh