span class="keyword">val</span> df : <span><span>int list</span> <span class="arrow">&#45;&gt;</span></span> <span><a href="../../index.html#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> <span><span><a href="../../index.html#type-t">t</a> array</span> <span class="arrow">&#45;&gt;</span></span> <span><span><a href="../../index.html#type-t">t</a> array</span> <span class="arrow">&#45;&gt;</span></span> <a href="../../index.html#type-t">t</a></span></code></div></div><div class="odoc-spec"><div cl