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 125 <div class="title">boost::hana::basic_type&lt; T &gt; Struct Template Reference</div>  </div>
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 128 <a name="details" id="details"></a><h2 class="groupheader">Description</h2>
 129 <div class="textblock"><h3>template&lt;typename T&gt;<br />
 130 struct boost::hana::basic_type&lt; T &gt;</h3>
 131
 132 <p>Base class of <code><a class="el" href="structboost_1_1hana_1_1type.html" title="C++ type in value-level representation. ">hana::type</a></code>; used for pattern-matching. </p>
 133 <h2>Example </h2>
 134 <div class="fragment"><div class="line"><span class="comment">// Copyright Louis Dionne 2013-2017</span></div><div class="line"><span class="comment">// Distributed under the Boost Software License, Version 1.0.</span></div><div class="line"><span class="comment">// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)</span></div><div class="line"></div><div class="line"><span class="preprocessor">#include &lt;<a class="code" href="for__each_8hpp.html">boost/hana/for_each.hpp</a>&gt;</span></div><div class="line"><span class="preprocessor">#include &lt;<a class="code" href="tuple_8hpp.html">boost/hana/tuple.hpp</a>&gt;</span></div><div class="line"><span class="preprocessor">#include &lt;<a class="code" href="type_8hpp.html">boost/hana/type.hpp</a>&gt;</span></div><div class="line"></div><div class="line"><span class="preprocessor">#include &lt;boost/core/demangle.hpp&gt;</span></div><div class="line"></div><div class="line"><span class="preprocessor">#include &lt;cstdlib&gt;</span></div><div class="line"><span class="preprocessor">#include &lt;iostream&gt;</span></div><div class="line"><span class="preprocessor">#include &lt;string&gt;</span></div><div class="line"><span class="keyword">namespace </span>hana = <a class="code" href="namespaceboost_1_1hana.html">boost::hana</a>;</div><div class="line"></div><div class="line"></div><div class="line"><span class="comment">// Using hana::type&lt;T&gt; as a parameter type wouldn&#39;t work, since it may be</span></div><div class="line"><span class="comment">// a dependent type, in which case template argument deduction will fail.</span></div><div class="line"><span class="comment">// Using hana::basic_type&lt;T&gt; is fine, since this one is guaranteed to be</span></div><div class="line"><span class="comment">// a non dependent base of hana::type&lt;T&gt;.</span></div><div class="line"><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div><div class="line">std::string <span class="keyword">const</span>&amp; name_of(hana::basic_type&lt;T&gt;) {</div><div class="line">    <span class="keyword">static</span> std::string name = boost::core::demangle(<span class="keyword">typeid</span>(T).name());</div><div class="line">    <span class="keywordflow">return</span> name;</div><div class="line">}</div><div class="line"></div><div class="line"><span class="keywordtype">int</span> main() {</div><div class="line">    <a class="code" href="group__group-Foldable.html#ga2af382f7e644ce3707710bbad313e9c2">hana::for_each</a>(hana::tuple_t&lt;int, char, void, std::string&gt;, [](<span class="keyword">auto</span> type) {</div><div class="line">        std::cout &lt;&lt; name_of(type) &lt;&lt; std::endl;</div><div class="line">    });</div><div class="line">}</div></div><!-- fragment --> </div>
 135 <p>Inherited by boost::hana::type_impl&lt; T &gt;::_.</p>
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