namespace </span>hana = <a class="code" href="namespaceboost_1_1hana.html">boost::hana</a>;</div>
<div class="line"><span class="keyword">using namespace </span>hana::literals;</div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">int</span> main() {</div>
<div class="line">    <span class="comment">// while_ with a Constant condition (loop is unrolled at compile-time)</span></div>
<div class="line">    {</div>
<div class="line">        std::vector&lt;int&gt; 