 1 2 8 9 15 16&quot;</code></pre>

<p><strong>Returns:</strong> A flattened view of the elements of this
  sequence of sequences.</p>

<p><strong>See Also:</strong> <code>flatMap(_:)</code>, <code>joined(separator:)</code></p>

    <h4>Declaration</h4>    
    <code class="language-swift">func joined() -&gt; FlattenSequence&lt;LazyFilterSequence&lt;Base&gt;&gt;</code>
    
        <h4>Declared In</h4>
        <a href="../../protocol/Sequence/"><code>Sequence</code></a>    
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