e><code class="language-swift">let x: UInt8 = 5        // 0b00000101
let y: UInt8 = 14       // 0b00001110
let z = x &amp; y           // 0b00000100</code></pre>

<p>Performing a bitwise AND operation with a value and <code>allZeros</code> always
returns <code>allZeros</code>.</p>

<pre><code class="language-swift">print(x &amp; .allZeros)    // 0b00000000
// Prints &quot;0&quot;</code></pre>

<p><strong>Complexity:</strong> O(1).</p>

    <h4>Declaration</h4>    
    <code class="language-swift">func &amp;