ord">template</span> &lt;<span class="keyword">typename</span> N&gt;</div>
<div class="line"><span class="keyword">auto</span> fact(N n) {</div>
<div class="line">    <span class="keywordflow">return</span> <a class="code" href="group__group-_logical.html#gab64636f84de983575aac0208f5fa840c">hana::eval_if</a>(n == hana::int_c&lt;0&gt;,</div>
<div class="line">        [] { <span class="keywordflow">return</span> hana::int_c&lt;1&gt;; },</div>
<div class="line">        [=](<span class="keyword">auto</span> <a 