class="line"> </div>
<div class="line"><span class="preprocessor">#include &lt;<a class="code" href="and_8hpp.html">boost/hana/and.hpp</a>&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;<a class="code" href="assert_8hpp.html">boost/hana/assert.hpp</a>&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;<a class="code" href="bool_8hpp.html">boost/hana/bool.hpp</a>&gt;</span></div>
<div class="line"><span class="keyword">namespace </span>hana = <a class="code