5;&gt;</span> <a href="../Base/index.html#type-t">Base.t</a> <span>&#45;&gt;</span> <span class="type-var">'b</span>)</span> <span>&#45;&gt;</span> <span><span class="type-var">'a</span> <a href="index.html#type-t">t</a></span> <span>&#45;&gt;</span> <span><span class="type-var">'b</span> list</span></code></dt><dd><p>This is prefix, do a List.rev to get a postfix version</p></dd></dl><dl><dt class="spec value" id="val-pp"><a href="#val-pp" class="anchor"></a><code><span class="keyword">val</span> pp : <spa